RE4RO1A Teardown

In this video, i teardown a 99 nissan pathfinder unit with blown planet gears. At the end of the video, i show location of anti-rattle clip and a shot of the valvebody with all valves out and the body cleaned.

[@ryanbemail]

Thank you for bailing me out of a jam, did my first one of these today, could not find anywhere where the rattle clip went in the low reverse clutch, but you showed me in this video, thanks for taking the time to share your craft,

[@GaryFerraro]

Awesome, thanks for watching, please subscribe

[@AnunnakiThe1]

great Video and very educational , thanks much appreciated for your priceless time contributed for helping people . may the gods bless you and your family in years to come .

[@GaryFerraro]

thank you

[@JK-li7fp]

A gentleman and a scholar. This will help with my qx4 solenoid pack replacement. Thanks for taking the time.

[@GaryFerraro]

Thats great, thanks for watching.

[@pontgta1]

Hello Gary, I have a unique issue with the transmission on a 2002 frontier 4cy 2wd. When cold or first drive, the transmission has a delay when moving in the D position. If i push the OD button off , the transmission will move instantly. I have no-issues otherwise. The truck runs perfectly, and on the road shifts perfectly and smooth.

[@apollo280zx]

Amazing video. Thank you, Gary! I wish more folks with in depth knowledge like yours would make instructional videos like this. Thank you thank you thank you

[@GaryFerraro]

Thanks for watching

[@alanchan1772]

gary thank you for a great teardown video.

[@aviator1683]

Nice video I did one unit like this one not too long ago and the first time I installed the wrong inner seal on the low reverse piston and I didn't have reverse, only had reverse if I give it gas Thanks again your a master on what you do

[@GaryFerraro]

It happens, just sucks the trans has to come back out again

[@tristanpicard6360]

Thanks for this video really great education and step by step. Just did mine this morning from my xterra 2003. Same issue sun gear and planet geat completely destroyed. Have to look if i can find those gears. Anything else is good even bearings i am surprised lol. Again thank you we need more video like this and less video with people dancing for nothing 😂

[@GaryFerraro]

Thanks for watching

[@tristanpicard6360]

@@GaryFerraro thank you for sharing your knowledge

[@driftboat945]

Fun to watch an artist at work .Great video. My son has a slow shifting 94 Nissan D21 and has to take his foot off the gas to allow it to shift. I'm guessing I'll be elbows deep putting a rebuild kit in it soon.

[@GaryFerraro]

Is that a RWD trans? Maybe making a 1-3 shift

[@driftboat945]

4x4 and has to rev it up then let off to get into next gear .If he slows to under 25mph it drops to first. He is away on trip fishing so I can't be sure of the gears it chooses right now so it could be skipping a gear

[@swmfers]

A master at work. I would love to see a shop tour tool box tour

[@GaryFerraro]

+swmfers I will keep that in mind, thanks for watching. Gary

[@Brironman]

Hi Gary - Thanx for making great videos and showing your expertise. My 98 Pathfinder has been taking longer and longer in cold weather to shift into overdrive. Now it doesn't shift into overdrive until very hot in summer and driving at highway speed. Then it shifts from overdrive to 3rd and back.. over and over with no hills in sight. I haven't ever changed the the trans fluid. I purchased it for $500 - 8 yrs ago. It's got 335,000 kms on it or 210,000 miles. Your suggestions on a solution will be appreciated. Thanx

[@Brironman]

I ordered a new filter and gasket. The parts never came in yesterday so I did a flush anyway. Disconnected the driver side hose from the rad - connected a pc of clear plastic into a drain pan..started it. It quickly pumped out purple brown fluid. Did a reconnect - added trans fluid and Sea Foam Trans Tune. Ran it thru the gears for 3 - 4 minutes. Drained it and it came out very dark then changed to nice red. Added a bottle of Lucas Tran Fix and topped up the fluid. It seems to work good and shifted into OD yesterday with a good lock up on the hiway at 100 - 120 km hr. TODAY it does't shift into OD AT ALL. Cud it be my thermostat? or temp sensor on the thermostat housing? It's 70 degrees out and the temp gauge on the dash never moved for over 2 km.

[@srvjediknightsrv750]

about to do one of these ...nice refresher

[@gcfdxfzsd]

Hi Gary, sweet video. I noticed two things in my ‘03 Pathfinder RE4R01A: is it normal to have zero engine braking in 4th gear? Is it also normal for rpms to drop to idle speed with foot off accelerator at highway speeds (ie. coasting downhill)? The torque converter locks up, but you have to have a little bit of load on the accelerator pedal (ie maintaining speed on a flat highway). Just wondering if i should be looking into repairs or keep on driving. I have no other RE4R01A to compare it to. Thank you 😊

[@prestonztt]

Hello! Do you know if all the RE4R01A's from 2001 and on came with the HD version or was is just the Pathfinder that got the HD version? The one I am talking about has the 4/5 Pinion Planet, 12 Lug Sun Shell, Different High Drum, and 12 Lug Reverse Drum.

[@GaryFerraro]

Well, I think it may be a matter of early or late, I looked up the reverse drum and it shows 98 to 04 while the early drum is 88 to 04. I guess on the vehicles with a lager engine they used the HD Version but i would think 98 and up

[@jay7264]

Video has a 2000's vibe but hes using a modern dewalt impact

[@jeffstepp1969]

great video....will be getting rid of those sharp edges on the slides from now on....good tip

[@GaryFerraro]

+Jeff Stepp Common issue when direct clutch or band is no good. Thanks for watching

[@tommys_chopshop9432]

Finally someone who seems to know about these things.. I have a 03 pathfinder with this transmission.. she has 450,000 k’s (270,000 miles roughly).. runs like a dream. But the other day I lost all gears at the bottom of a valley.. let it cool and they came back until it got hot.. got the car home.. had a loud whine coming from what seemed like the converter but I had gears again and it drove. Now it’s back to normal.. selecting all gears.. coming out of lockup and kicking down which it didn’t like to do before. Fluid is the right colour, the right level, and the right smell.. any ideas mate? All I’ve done is replace the filter which was pretty gummed up but not bad enough to stop it working. No metal or discolouration in the transmission anywhere that I can see. Thanks mate

[@GaryFerraro]

Hello, From what your describing sounds exactly like a clogged filter.

[@kirbybrowne5501]

thanks Gary your right , was at junk yard had a complete engine trans pulled out. it was the rear vent tube was off. now i'm trying to make a special tool that I can get to and break off the knock sensor with out pulling everything off. will see how I do? if I do get it off I will show you the tool. I think I will epoxy the new one down in a good spot. Kirby

[@vitiay7209]

Hi, why the service manual for the 4x4 Nissan Pathfinder 1998 with the rear 2wd part time option says, that the vehicle can ( but not recommended ) to be towed with the rear drive wheels on the ground at the speed no more than 60 mph with the transmission and the transfer case in neutral ? Does the transfer case in neutral not totally disconnect the front and/or rear wheels from the transmission? Your opinion would be highly appreciated.

[@drnandopr]

Hello, wondering if the rotor inside the oil pump of an nissan RE4R01A goes one way or another specifically or it can go either side. The manual states to mark it, but I did not, and now going blind with it; thanks for your help, and great videos, thanks!!!!!!!

[@GaryFerraro]

Ok, look on the inside where the tabs or flats are(where the converter rides) there should be witness marks or even alittle wear, where the pump gear rides on the converter, the witness mark face toward converter

[@jbncnow]

There are two alum pistons that fin inside each other in the foward overun area. my boo says theres a seal with a lip that faces twords the rear of the drum but the kit i bought had seasls with no lip. if i put those seals in it will go down fully but if i use the seal with the lip it wont go down far enough to get that C clip back in that holds all those springs. I air checked both of them and they move back and forth but the book calls for the lip seals, is this a desighn change or are there 2 types of seals?

[@glengrimm4075]

Thanks for your video i was a bit hesitant to strip it down but after seeing your video it made a lot more sense to me. I have a R50 I'm striping down now because it won't reverse, it goes in but makes a sh!t load of noise it drives forward no problems all gears change but reverse just sounds like a blown diff. Edit: I have it apart, front and rear planetary gears are shot. Broke ring gear in half. Loads of fun

[@GaryFerraro]

wow, I used to keep those planet sets in stock

[@glengrimm4075]

@@GaryFerraro damn wish you still did, I have now shelved it. I'm going to wreck the car I have looked at what it's going to cost me and its well over $1,200. Just in parts alone. Edit: lmao I can't believe how crappy these gearboxes are, this is my second one and reading all these posts it's almost unbelievable. It's funny how much you discover about a vehicle AFTER!!! you purchase it lol.

[@GaryFerraro]

@@glengrimm4075 yes, I agree. Have you priced out parts?

[@glengrimm4075]

@@GaryFerraro yeah over $1200

[@GaryFerraro]

@@glengrimm4075 wow, thats up there for that unit

[@3dmasters]

Hello Gary, I have troubleshot my RE4R01 problem and need a new planetary gear set. Do you know where i can get a new kit with both forward and rear planetary set sir?

[@Brironman]

I've got the pan off and it has absolutely no steel shavings in it..so THAT'S good. The magnet has very fine particles on it..almost like black grease...but it's got a lot miles on it. Any suggestions about what I should I check before reinstalling the filter and gasket? Cheers

[@onofrewillie5184]

Very nice demonstration, it is very informative sir, can i ask question regarding my nissan patrol (2001model) with an automatic transmission. It has no problem while running on a level straight road. My problem is that, it has difficulty in going up to an upgrading road. It can only reach a speed of less than 40km/h. Respectfully request any suggestion to increase the speed of my car particularly when traversing upgrading road. Thank you very much.

[@3dmasters]

Hello Gary, Great video tear-down. Do you have a reassembly video of the same RE4r01a?

[@GaryFerraro]

I do not , sorry. but will keep that in mind when the next one comes in.

[@3dmasters]

@@GaryFerraro when these transmissions come do you need to install a bushing kit. Also do think a shit correction kit is worth the trouble to install sir.

[@3dmasters]

Thank you Gary the good info. I am almost completed the main repair on the case from your video. The planetary gear where both bad as well. Great job Gary you inspired me to start repairing these old units.

[@GaryFerraro]

@@3dmasters Wow, Thank you for that

[@ItsMeJbird]

What's that Pump Washer made out of? I have a RE4R03A I dropped the pan and found a Black Plastic Washer about the diameter of a lid on a spray paint can in the filter. Looks like the Washer you pulled off the Pump. The Transmission is having problems going in Drive when cold. Fluid was dirty but not burnt. Thanks

[@GaryFerraro]

Bandits INFO Channel The washer is black plastic, selective in size. When the trans warms up does it go into drive ok?

[@adrianhernandez3162]

Great vedios! I do have a question. I recently bought a transmission for my 2001 4WD electronic shift nissan pathfinder 3.5L. The transmission was actually from a manual shift 4WD. Will the adaptor case interchange? I guess to put it simply will the transmission without adaptor fit my current adaptor case 4wd electronic?

[@kirbybrowne5501]

hi Gary I just bought a 1996 pathfinder, I looked under it and found a rubber hose, looks like vacuum hose hanging from the side of the trans, it doesn't look cut or hurt. can you tell me where it connects to???? the hose has a bunch of bends to it and looks looks like its a 1/4 to 3/8 od hose. about a foot or so long. I cant see anywhere where it would connect? can you help me out?? Kirby

[@GaryFerraro]

It's Very possible it is a vent hose. The trans doesn't use vacuum lines, can you see where the other end is on the trans or transfer case?

[@3dmasters]

Hello Garry, I have just rebuild a RE4r01. Master rebuild kit. Replaced torque converter and radiator and replaced all solenoids new. I just got everything reinstalled. It will shift up to third gear no problem will not goto overdrive. Was on a test drive and rpm's got a little high still changing gears but no overdrive. It pushed a little fluid out the fill tube. I pulled the codes and got a P0705 PRND1 error. I did remove the neutral safety switch to rebuild the trans. Any help would be great.

[@NCR-Performance]

I just lost all gears suddenly at a stop sign. Was operating perfectly before I stopped. No previous slippage at all. Now it will move about 20 ft on a cold start then gradually start slipping until there's no movement. Any idea what could cause this?

[@GaryFerraro]

sounds like your filter may be clogging up

[@NCR-Performance]

@@GaryFerraro kinda. After pulling the pan I discovered the previous owner had installed the incorrect filter. Deep sump filter in shallow pan. Installed correct filter and she drives great now.

[@GaryFerraro]

@@NCR-Performance thanks for the update, sounded like a filter problem

[@joyroc885]

How many miles did this have on it? Have you ever done a shift kit upgrade?

[@GaryFerraro]

I do not remember mileage, no shift kit in this unit

[@tnet6969]

The three accumulator springs, I know the fat one goes in the middle but which one of the other two goes toward the front of the vehicle? The heavy coil one or the lighter coiled one?

[@GaryFerraro]

The springs are the same size or different size

[@tnet6969]

@@GaryFerraro They are all 3 different

[@stevenwheeler9668]

I've got a 1999 Nissan Frontier with the RE4R01A transmission in it. My trans wont go into third or fourth gear. None of the salvage yards in my area have a trans from a frontier but there are some from 300zx and 240sx. Do you happen to know if the trans bolt holes will line up and the plugs will work? I know they're the same trans model I'm just not sure if its different sized bellhousing and electrical plugs. I don't have the skills to rebuild one on my own and don't have the extra money to pay the local shop the $2,200 they want for a rebuild.

[@sawtun3294]

Thank you very much,sir.

[@menocantu]

Is this the same transmission that is on a 2003 Nissan Frontier SE 3.3 l four-speed automatic?

[@GaryFerraro]

it should be yes

[@bmwbob86]

Hi Gary, I've been having problems with my trans not shifting up to 3rd gear. I removed the valve body to check the solenoid's, they seemed to free up OK. But after reassembly and refilling with ATF, the trans is driving forwards in every gear (PRND21). The instruction document I used just said to reinstall the shifter shaft in the valve body, it didn't mention connecting it to the inside part of the shifter linkage. So I just put the shaft completely inside the valve body and bolted up the valve body. Now this really didn't seem right to me, but the instruction manual was quite comprehensive, so when it didn't say anything about connecting the shaft and linkage, I presumed it was intentional. But now I think that is the problem. What are your thoughts?

[@GaryFerraro]

It has to be connected, this is how you get the different gears

[@nitrousfueler7]

Great video Gary and I have a simple question. The trans is out of a 99 Pathfinder and you show the number but who is the manufacturer of this trans. I can't find any ID. Is it Aisin / Jatco / GM or Borg Warner ? Thanks / Wayne E Partridge Sr

[@GaryFerraro]

These are usually Jatco

[@gasonthebrain3738]

Hi Gary. Thanks for videos and good info. Stephen from New Zealand here. I have a 1995 Nissan 4x4, with one of these gearboxes in it. It works perfectly, except for reverse. Absolutely nothing, at anytime. I thought of checking the tension on the reverse band, however it's in a hard to get at spot. Now I'm thinking about going up through the band servo hole to see if the band is broken. Is that a possibility? How would you go about a diagnosis, preferably without removing the gearbox from the vehicle? Any thoughts would be appreciated. Thanks

[@michaelgreene4436]

I bent the flexplate causing the torque converter to be pulled away from the transmission about a half inch. The starter scraped metal shavings in to the bellhousing so I pried the transmission dust cover back and sprayed water to wash away the shavings. I think water somehow got into the transmission this way. The fluid had a chocolate milk look to it. I’ve since flushed the trans oil and put a new flexplate on. I flushed with 12 quarts of new oil but at the end there were still a bunch of tiny bubbles coming out. The current issue is that when the transmission is warm and after 55mph driving, when I come to a stop the RPM drop very low(500) and when I hit the gas the RPM go up to about 1500-2000 with little forward movement, then it’ll jerk forward a couple times before letting go and driving normal. There are no sharp noises from the transmission, no grinding, but I do hear softer noises sometimes what sounds like a helicopter thudding from a distance. Could this be foaming of the oil because of water? Do you think this could be resolved by continued flushing of the oil? This is a 1999 Infiniti QX4

[@GaryFerraro]

Did you check your radiator to make sure no oil was in there. shooting water up in the bell really shouldn't get in the trans thats all sealed, if your oil looks like a milk shake then seems like water is in the trans. how long is the trans not shifting correctly?

[@michaelgreene4436]

Gary Ferraro thank you for helping me!!!! I bypassed the radiator a while ago and have changed the trans oil since then. Here’s what it looked like: kzbin.info/www/bejne/l17SimqVad-sns0 I put a pint of Seafoam Hydratune in an attempt to remove any moisture that did get in there and then I flushed it again with Mercon V. Now everything is working normally except that I can hear some noise coming from the torque converter area. It sounds like a low pitched whirling noise that is only present when I am moving forward under the torque converters power with no gas pedal. I am wondering if maybe instead of moisture that opaque color of the trans oil was actually clutch material from the torque converter since it was likely starved of oil in some way while it was pulled away from its normal position because of the bent flexplate. The rest of the trans seems good except a grungy shift from 2nd to 3rd IF the RPM are above 3500 during the shift. It sounds/feels like the grunginess is coming from the torque converter though. Do you think I should get a new torque converter? Or do you think that grungy shift could mean the rest of the trans is damaged?

[@GaryFerraro]

will check the video when i get home, computer wont let me open the file.

[@GaryFerraro]

cant open file, not sure why

[@michaelgreene4436]

Gary Ferraro maybe I’m not allowed to post a link or something. Look at my videos it’s the one called “milky transmission oil possible water intrusion”

[@RaccoonTactical]

I have an 02 xterra all forward gears work but no reverse valve body clean and new solenoids installed, backup lights come on but it just won't take reverse

[@GaryFerraro]

Does this by chance move forward in Neutral?

[@RaccoonTactical]

@@GaryFerraro no it doesnt

[@wyattthompson2035]

Hi Gary, I just bought an Xterra with this transmission, 313000 kms and was thinking about putting the transmaxx shift kit that’s supposed to some of the common problems with these transmissions. What’s your thoughts on that ? Easy to do? I do have a clue what I’m doing, just never torn into one of these before. Thanks in advance for your reply :)

[@GaryFerraro]

I never used one in this trans, common issue is the pump slide actuator gets stuck causing low pressure and burning out the high clutch and band

[@waynewalpole9480]

Have this transmission. Great video. I am thinking there may be a solenoid problem due to when turning off overdrive or go to pass I get what appears to be no torque high rpm condition. Can you think of another reason other than solenoid? I had the transmission rebuilt but the problem still exists. The solenoids were not changed.

[@GaryFerraro]

Could be a solenoid for sure. It sounds like your getting no 4th gear, do you or the shop the rebuilt the trans have a scanner that shows live data, im wondering if the computer is commanding 4th gear. Also, are there any other engine codes for engine temp or maybe a tps code?

[@matthomas1337]

So I am looking for advice, I have this transmission in my 2001 Nissan Xterra. Currently the vehicle goes forward in all gears including Neutral and Reverse looking for some ideas of where to start.

[@GaryFerraro]

Does the linkage seem to be ok?

[@apollo280zx]

Hi Gary- What would cause this transmission in a 2003 Nissan Pathfinder 4x4 to loose only thr reverse gear? Will a master rebuild kit that I can get fix this problem?

[@GaryFerraro]

Very possible something may have happened to the reverse input clutch, this drum is located right behind the pump. Forward gears are all good, no problem? Did this happen suddenly?

[@dalymaxdalymax2055]

Nice video

[@markabercrombie1259]

What causes one of these to go forward in neutral and not go backwards no odb codes

[@GaryFerraro]

You have a clutch pack that is locked together and will not release

[@settripsbunch]

So can it be safe to say lack of trans maintenance caused this: oil changes?Does this trans have band adjustments?

[@GaryFerraro]

On this trans, very common for the planet gears to go bad, i used to stock them. Yes, this trans does have a band that is adjustable. This trans uses one band.

[@benitolopez2639]

Gonna be tackling my wife's transmission. First time rebuild and kinda intimidating but thank you for a thorough video. My wife's truck slips a bit in all gears but the biggest issue is that she has to drive it in second gear for a couple of minutes before she can put it into drive. Metal shavings in the pan aren't too abundant but if I'm not mistaken the shop owner said the trans fluid had a burnt smell. Would I be looking at more of a soft rebuild or would you recommend some hard parts as well

[@GaryFerraro]

ok, so if you put the car in drive no move correct? does this happen when the car is cold and hot?

[@JosePerez-mh5lm]

@@GaryFerraro How is it going Gary. I need you expertise opinion. I have a problem with my RL4R01A transmission. 1). Is does not move on drive. Have to run it on 2nd for a few mins then go into D when it warms up a little. 2). Delays 2nd gear I believe and does not go into last gear. I have replaced filter, fluid, and the 2 solenoids but no change. Any idea?? Would really appreciate it. Thank you.

[@GaryFerraro]

@@JosePerez-mh5lm Ok, It does not move in Drive at all or only cold? It delays 2nd gear so you have a late or long 1-2 shift?

[@JosePerez-mh5lm]

@@GaryFerraro only on cold start

[@JosePerez-mh5lm]

@@GaryFerraro Its the first shift that delays goes all the way to 3000rpms than shifts rough and no fourth gear either. I put in a set of used solenoids to see if it was the solenoids that were bad and before I installed those i had good shifts 1-3 but no fourth. Now I dont have 1st and fourth.

[@nortonn700]

Mann du bist super meister danke . thanks for you

[@GaryFerraro]

+AHMAD eid Your welcome, thanks for watching (i need a translator, lol)

[@johnnyt1408]

Hi Gary, great video. I have a 2000 Xterra with the RE4RO1A and suddenly lost reverse which is a known issue. My question to you is, do I have to remove the bracket for the sensor and the tube you removed on the right side to pull the entire valve body off. I have a replacement valve body that I plan on installing and I want to remove the entire valve body as a unit with the least amount of removing things I don't have to, since this is an entire valve body swap. Thanks again for the great video.

[@GaryFerraro]

+Johnny T A no reverse condition usually is a bad geartrain, the planetary gears go bad, the first thing to do is drop the pan and see if the pan is clean or full of crap.

[@johnnyt1408]

+Gary Ferraro I'm dropping the pan this weekend and I'll check it out. Thanks for the reply. Have a great holiday.

[@GaryFerraro]

Thanks you too. Let me know how the pan looks. Gary

[@Almeshtages3]

Thanks Gary

[@GaryFerraro]

+‫احمد محمد‬‎ Thanks for watching

[@brandongoodwin7742]

Hey Gary, I have RL4R01A, did teardown and did not see anti-rattle clip. Dont see in manual either. Do you know if this part is required in this transmission? Thanks, -Brandon

[@GaryFerraro]

I honestly dont remember puting one of those back on that trans.

[@brandongoodwin7742]

Thank you very much. I'll just not worry about that then.

[@GaryFerraro]

Welcome

[@srvjediknightsrv750]

question ...my atsg book does not show a needle bearing behind the sun gear infront of the snap ring that holds the output shaft I believe there is one ?

[@GaryFerraro]

+Srvjediknight SRV yes there is, should be open face bearing.

[@yuichishibata4982]

Hello from Japan! At the point of initial release, the needle bearing in question was a part of front internal gear ASSY, not replaceable, so I hear. Therefore not only on the ATSG DWG, but it is not shown on the NISSAN original maintenace manual. However, it is incovenient not to replace the bearing except ASSY. So engineering change seems to be done for it. Engineering change is not limited this. For example, neither the anti-rattle clip, nor a small fileter, located near the orifice check valve in the valve body ASSY, is not shown on tha manual. Any way, extreamly good video. Thank you very mutch, Gary!

[@GaryFerraro]

Greetings from New york, thank you very much for that. Gary

[@TopShotta713]

Do you happen to know what a Superior shift correction package will do for this transmission, will it shorten the shift times?

[@GaryFerraro]

Not sure on that, you could check transgo's website as well, but this is shifted electronically through sensors like the TPS , Vss.

[@zacksaunders7184]

Great video. I've got a 98 Pathfinder with this trans. Having issues with catching overdrive when fluid is cold. Once I stop after probably 10 mins of driving and take off again it seems to be fine. Noticed once or twice it would.kick out of 4th gear down to 3rd as well. Once the vehicle has been driven a while it doesnt happen anymore. Any ideas ?

[@GaryFerraro]

Are there any codes present for the trans. Do you have a scanner that shows live data?

[@zacksaunders7184]

@@GaryFerraro thanks for the reply Gary. Yes I have a scanner. No codes and I can stream data but it doesn't give me anything for transmission data

[@markkabby2502]

Good work

[@GaryFerraro]

Thank you

[@valleycatx2]

Could to possibly enlighten me on how the low clutch anti rattle spring goes, it hit the floor as yours did 😫

[@GaryFerraro]

Hi Cliff, My e-mail is [e-mail] send me an e-mail and I could send you some info on the location

[@lrwhat]

great videos Gary ! I had same trans rebuilt on my 98' QX4 after installing I have no upshifts above 2nd gear any idea where I can look much appreciated . also where in N.Y are you located

[@GaryFerraro]

+L What actually is happening? it will make the 1-2 shift and then does it seem like it goes into neutral? im on long island

[@lrwhat]

+Gary Ferraro tnx 4 reply ,yes exactly I also installed and adjusted new tps with no change .

[@GaryFerraro]

+L If it has that neutral condition, then your direct clutchs are bad, the problem probably is the pump slide sticking causing low pressure.

[@connerchampion5656]

was this transmission decent to work on? it seems decent to me.

[@GaryFerraro]

Not Bad to work on

[@jorgecorrea1963]

Hello Gary, I have that box model in nissan terrano 92 diesel, I repaired a gear problem of a planetarium, but after the assembly I used oil dexron III, after that ONLY when the oil reaches the optimum temperature does not make the change to D4. my question is, is the oil used right? will it be product of the type of oil the fault? before this it worked correctly. regards

[@GaryFerraro]

Sometimes, the computer makes this happen so the car heats up faster. The only advice i can give is see if the computer is commanding 4th when the car is cold, for this you can use a volt meter. That oil is ok to use. Before you had 4th all the time?

[@jorgecorrea1963]

Gary Ferraro in cold works correctly, how is it possible to measure with voltmeter?

[@GaryFerraro]

The solenoids are on/off, this means there is either 12 volts or zero volts, there are 2 shift solenoids, im not sure whats on in 4th i have to look, but put the volt meter on either solenoid A and/or B and see if the computer commands the shift. The computer usually supplies the ground for the soleniod. so put the volt meter on a or b and watch the voltage.

[@jorgecorrea1963]

Can this be due to lack of clutch regulation? or brake band?

[@sabahjason1]

Is this the same with 2004 nissan xterra ?

[@stevenchancey]

Hi Gary, great Video. I will be working on a RE4R01A out of a 2000 infinity QX4, 4x4. I have 2 question - there is a transmission bone yard here in my small town who has some of these transmissions. (#1) I was wondering if I could use one of these for parts but wasn't sure if the RE4R01A all have the same internals. Salvage yards tell me I can use only 1999 and 2000 model years but transtec list the RE4R01A the same 1997 to 2003. (#2 question) the previous owner of the car said he pulled the vehicle on a dolly for 1000 + miles and burned up the pump. It still drives but in 3rd gear only with out reverse and when idling in park the engine is held back like your in drive with foot on brake. Also, it will engage gear when neutral is selected. You can't push the car in neutral until you turn off the engine. What all do you think I'll find damaged? (Sorry for the long comment)

[@GaryFerraro]

Hello, To answer question #2 first, the problem is the foward clutch is locked together so it wont release, its always on, I believe the internals are the same, but i would want to ask my rep or look in my parts book just to be sure, i used to stock the planet sets at least 3 of them, very common to go bad. Where are you located? Gary

[@stevenchancey]

Gary Ferraro fort smith Arkansas. It was suggested to me to not rebuild because metal has possible contaminated the whole system. You think I will find multiple failures?

[@GaryFerraro]

Those planetary gears are known to go bad, you may want to drop the pan to see whats in it, if its bad i would suggest to change out the radiator as well, if its not cleaned properly the trans can get contaminated again

[@stevenchancey]

13 December 2016 09:28 I picked up a used 1999 RE4R01A out of a Infinity QX4 - but it was an All Wheel Drive. The transfer case looked different. Mine is a selectable 4 wheel drive. Will the gear ratios match up?

[@GaryFerraro]

Steve, not 100% sure on that, these transfer cases never go bad, i never worked on one, you may want to seperate the trans from the t-case and if the output shafts are the same (which they probably are)use your transfer case

[@NARANHOUSTON]

Helo what type Of transmission have a xtrale 2006 2.5?

[@pedrolara2042]

Hi, I want to know where the Front sprag of the Nissan pfhaifander Transmission RE4R03A turns and where it locks help me please

[@GaryFerraro]

what year is the car

[@GaryFerraro]

forward sprag correct?

[@pedrolara2042]

it's 97 help plis

[@GaryFerraro]

The internal ring gear must freewheel clockwise and lock counter clockwise when holding the forward hub

[@nortonn700]

you are great and profitional thank you

[@GaryFerraro]

+AHMAD eid Thanks you again. Gary Greetings from new york.

[@gasonthebrain3738]

Okay. I bit more research has lead me to a more relevant question. That is, which solenoid or servo is responsible for engaging reverse? I thought it was the servo, but not so sure now. I think others have put me wrong. Help

[@GaryFerraro]

There is no band for reverse on this trans, there is a clutch pack called reverse in put clutch and the low reverse clutch, do you have engine braking in manual low?

[@gasonthebrain3738]

Thanks for that. Next time I drive it I will check it and then let you know.

[@GaryFerraro]

ok, sounds good

[@gasonthebrain3738]

Okay, finally got to take it for a drive again. It seems to be engine braking in 1st manual okay. The car doesn't run away when going down hill in 1st manual. I've found some free manuals on the net, and have been studying them. Getting to know what makes these trans tick a bit at a time. It sounds like the problem is something to do with the reverse clutch and reverse drum area. Would you agree. Thanks again for your help.

[@GaryFerraro]

gasonthebrain maybe a problem in the reverse input drum right behind the pump

[@MsLorisM]

My 2001 Nissan Frontier wants to be manual shifted on a cold start for the first 1/2 mile, then it's OK . It slips in "D" like it's in neutral on a cold start. If the truck sits for 5 minutes with the engine off, it's back to manual shifting. :-(

[@toddkovi2849]

Great bunch of videos on your channel! We have a 93 300ZX that suddenly lost all drive and reverse (at any RPM). Ran diagnostics with no issues found (blinking light solution). Line pressure in all positions is about 40psi; goes no higher regardless of RPM. Pulled apart the valve body and checked for stuck valves or bad springs; all the solenoids in spec for resistance; no issues found. Removed the transmission - looks like someone rebuilt it not too long ago - all the clutches and steels are good, no bad hard parts, bushings, bearings, etc. Still need to check the pump for tolerances but it visually looks OK and the ridge on the 'finger' is small but I'll clean up with a file. Converter check seems to indicate the sprag is good. Any ideas on what this might be? We're stumped.

[@GaryFerraro]

todd kovi can you give me the vin number to I.d transmission type.

[@toddkovi2849]

JN1RZ26H3PX537357 - this is a non-turbo car with a RE4RO1A. Thanks for any suggestions.

[@GaryFerraro]

Did you by chance unplug the solenoid harness to see what the pressure does while the gauge is hooked up, did you check the converter splines to see if anything stripped? This happened all of a sudden?

[@toddkovi2849]

We did not unplug the solenoids during the pressure check. The splines for the stator and turbine look good. When I insert the input shaft I can feel good resistance from the turbine, meaning I don't think the hub weld broke. The stator roller clutch seems fine as it's working one way as expected. Since the transmission is out of the car I just checked the harness for opens or intermittent for all the soleniod pack connections and the lock up solenoid and found none - all seem good connections. My nephew was driving at highway speed, about 60-65mph and lost all forward gears (D4-D3-2-1) and after pulling to the side of the road found that reverse was not working either. Before we decided to remove the transmission I pulled apart the valve body and checked the solenoid pack, replaced the o-rings, checked all the springs for length to spec (all good), no hung up valves, no metal chips or chunks, only normal clutch material in the pan - minimal amount. Put everything back together and had the same results. Thus we decided to pull the transmission to make sure we didn't have a different failure.

[@GaryFerraro]

Ok so before you pulled the trans, it did not move foward or reverse correct? did you try manual one?,, If you let it sit and cool down any movement? sorry for questions, just trying to get a direction

[@joseortega1114]

Do they make performance parts for these I already know transgo makes a shift improver kit for it like performance clutches and steels and the Z pack

[@GaryFerraro]

Would have to check, but probably the company Alto makes the eagle red frictions for most transmissions

[@joseortega1114]

I checked them and they don't

[@GaryFerraro]

@@joseortega1114 ok, let me ask my supplier on monday, i,m looking in a parts book and i found overdrive brake high perf. clutches, have to ask on monday

[@forestwhite1037]

Nice video man.... I have a question though, which gears the band control?

[@GaryFerraro]

2nd and 4th

[@forestwhite1037]

I just rebuild one and I shift from 1st to 3rd gear and no 4th u think the band would contribute that shift issue? ... the band servo air checked with some pressure leaking too.

[@GaryFerraro]

are you sure the band is hooked up

[@forestwhite1037]

Yea it is ... it holds when I air check it but I can hear the pressure leaking

[@GaryFerraro]

Maybe take the servo cover off check the seals, how much air pressure do you use when air checking, i use about 50 psi

[@jvoll7685]

Do you follow up this tear down with the rest of the rebuild? Excellent video by the way :)

[@GaryFerraro]

I wish I could, the shop is so busy all the time, during business hours it's impossible for me to film. I do it very early in the morning or afterhours, I have to get the transmissions built as quick as I can, i'm always a week behind.

[@jvoll7685]

@@GaryFerraro I understand :)

[@GaryFerraro]

@@jvoll7685 Thanks for watching

[@grahamh6444]

Great video.. I have one of these boxes on a nissan largo people carrier with 470ft lbs of torque. The AT supposed to have been a bullet proof unit but I think what has messed it up is the flare between changes as the accumaltor mod has not been done. I still get all gears but reverse feels like brakes are on and it does not creep in reverse. Also whn in neutral the rear wheels spin quite fast when jacket up off the ground. Got the AT off the vehicle yesterday, any idea what could be wrong? Have been told it could be the forward clutch. Also in your vid you recommend a mod around the fluid intake do you have anymore details on this? The company that supplied the upgraded parts for the box back in 2012 have an uprated service kit have you heard about this kits? Tks

[@GaryFerraro]

Did this car creep or move foward in neutral? how did it shift in the higher gears? the 2-3 shift and the 3-4 shift?

[@grahamh6444]

Hi, thanks so much for coming back to me. Car still drives and all gears avaialble. TBH the shift had never been the fastest always had rpm flare when giving it a lot of gas which is what was probably the cause of the issues I am guessing. In neutral with the car on the ground it does not creep but if the rear wheels are off the ground they spin quite fast but can be stopped by putting your foot on the tyre. Here is a video of it up and running of the ground. I also he a whirring noise in park and neutral that was not there before> the whirring gets more pronounced when you press the foot brake. All this started after a fluid change, I have put the old fluid back in with a 50/50 mix of old and new as I totally lost drive with more or less all new in the transmission. I have the transmission off the vehicle now BTW the shift quality has not got any worse since the issues. When I first changed the fluid the filter had no debris on the gauze. The magnet had a slight coating of magnetic sludge. After putting in the new fluid and when I lost drive I now have some black particles (small flakes like grains of sand)on the filter. drive.google.com/open?id=0B8yptSHavevPN0VuaWxDamV6eEE Also here are some pics that I took of the TQ convertor etc when I pulled the AT. drive.google.com/drive/folders/0B8yptSHavevPNGhwX3M4RW1uNlE?usp=sharing

[@GaryFerraro]

Not liking the filter, the screen should be clean. Question, did you have to change out your radiator at one time, looks almost like water mixing with the fluid?

[@grahamh6444]

The car has separate coolers to the radiator has 2 in series. That screen was a lot cleaner before the first fluid change and had no debris. After running it for around 30miles and loosing all drive the filter then had the debris. Tks

[@GaryFerraro]

very possible lost drive due to clogged filter. As a test when you loose drive, shut off the car for 5 minutes, then start it up and see if you can drive a few blocks before it stops moving again

[@AaronCyrille]

Hello, I have a 2001 Nissan Frontier and my transmission is RL4R01A. I keep finding information about the transmission you have but my transmission won't go into second gear. Do you think that the re4r01a shift solenoid works in the rl4r01a?

[@GaryFerraro]

The RL4 is not electronic, the RE4 is. The RL4 shifts with a govenor.

[@AnunnakiThe1]

here is a complete PDF book i got for my working donkey 99 Nissan frontier with RL4R01A tranny by Jatco . from text files.com :- pdf.textfiles.com/manuals/AUTOMOBILE/NISSAN/frontier/2001/at.pdf it is a 503 pages and everything you need to know and how to about this particular transmission . good luck

[@AaronCyrille]

Oh my thank you so much

[@GaryFerraro]

Welcome

[@AnunnakiThe1]

you welcome, note: Transmissions are the most complex machines in vehicles , make sure when you work on them you do every step correct and according to its specs one wrong item displacement ? and entire transmission can get shot . if you have any other questions ? I suggest you ask Gary Ferraro , I trust he is an expert on Transmissions and from what I observed from his teachings he shows extraordinary level of understanding how Transmissions works and what causes them to go bad .

[@AnunnakiThe1]

hey Gary , remember when I posted for you earlier about my RL4R01A transmission I rebuilt had a shifting problem , I had the time past few days and Took it down and found out the high gear planetary thrust washer ( inner washer ) was destroyed and that was due to the oil pump needle bearing ( between the output shaft and the pump input shaft ) was missing , so this time I inspected and reinspected every single part , and it worked fine , however ? I can't find any information that shows exactly how to adjst my transmission throttle wire to meet its specs ( it should be reading 42mm to 49 mm or 1.59 to 1.79 inch ) at seating motion to full throttle max , mine cable is in need to be adjusted to that and is missing about 20mm in total length to be adjusted . do you have any information or Idea of adjusting the transmission throttle wire ? thanks again as I promised to come back and let you all know why my KA24D/ RL4R01A transmission was not shifting to 2nd gear , above was the reason why : always make sure you got all the parts in order and to the exact specification required or you will face problems as I did . thank you Gary for all the help in advance

[@GaryFerraro]

When you say throttle wire, you mean the cable correct? What is the trans shifting at now?

[@AnunnakiThe1]

yes, the cable it self. from D1 to D2 is between 31- 41 MPH and almost at full throttle , it should shift at half throttle between 18 to 21 MPH and from D2 - D3 from 35 to 40 MPH and from D3 - D4 from 65 - 71 . it is shifting from D2-D3 , but ? from D1 to D2 ? it is a hard shift and have to go full throttle to accomplish the shift at 33 to 41 MPH . the Governor valves and its assembly I checked and tested all doing their Job , the control valves and lines pressures are checked a GO to the specification required . what caught my attention was a Note that demanded to readjust the throttle cable every time the transmission been torn down and rebuilt . and I think that is the problem right there

[@AnunnakiThe1]

well I found out how to adjust the transmission cable , there is a spring loaded mechanism in its mounting box I had to figure out LOL , by pushing the plate inward the housing box it unlock the spring and you can move the cable body upward or downward , so it fixed the 1st Drive to second , but now ? all my line pressures are reading low during stall test of D, 2 and 1 positions ( regardless to ODO on or Off according to test procedure ) . , the chart says if low pressure ? the problem lies in the following : oil pump wear

[@GaryFerraro]

with the cable set where it should go, so it doesnt shift late, put a gauge to check line pressure, but check it when cold, let the car run see if it stays or drops when the car is hot.

[@AnunnakiThe1]

thanks for the swift reply Gary , and the tip , will do that and get back to you with the results .

[@logicmind240]

2000 frontier v6 automatic. I took the valvebody out and cleaned the selonoids. After repair, reverse, neutral, and all gears besides park only move forward now at a crawl pace. Is there something I did to cause this during the disassembly and assembly? Truck was fine before other than a hard shift. The only thing I noticed was that the manual valve would try to spin and slide out on its own when tilting the valve body. The pan, screen was clean, solenoids checked out fine and cleaned them anyway. Originally the only problem was a hard shift through take off. Any idea's?

[@GaryFerraro]

Are you sure the manual valve is hooked up

[@logicmind240]

Gary Ferraro no I am not sure if the manual valve is hooked up. Could you describe how to do that? The Nissan factory repair manual doesn't mention this anywhere that I can see. When I took out the Valve body I flipped the valve body over and the manual valve slid out, I couldn't tell at what turning orientation it's supposed to go back in. The manual also doesn't specify how to get those accumulator return Springs B, C, and D to go back together properly, I sort of just finger felt them back in place as I mounted the valve body bolts back on.

[@logicmind240]

Gary Ferraro nevermind about the accumulator return Springs I can see the reason why they fall out is because I still have the transmission on the vehicle. Any chance that you could please explain how to set the manual valve?

[@GaryFerraro]

With the pan off, look at the rooster comb (this is the internal linkage). On the rooster comb is where the manual valve hooks up to. Look at the manual valve you will see on the end is shaped like a U that hooks up to the piece that ispart of the rooster comb. If any questions you can send pictures to my e-mail [e-mail]

[@GaryFerraro]

For some reason i can't find the last post you wrote, but yes you could reuse the oil

[@perverso12345]

Is the same transmission for a 98 Nissan frontier?

[@GaryFerraro]

Yes, this should be the trans

[@michael001437]

Great video! I disassembled my RE4R01A valve body and found out that many springs were 0,5 - 2 mm shorter than spec. Should I replace them?

[@GaryFerraro]

What is the problem with the trans? Not sure can get just the springs

[@michael001437]

@@GaryFerraro The car doesn't move at all. Haven't disassembled the whole tranny yet, just the valve body. I know the springs are not the root cause of my problem because it was working well and suddenly not. The service manual suggests to replace all the fatigued springs but does not give any tolerances.

[@elvisruiz2560]

Can you rebuild a 300zx auto from a n/a 1990 nissan! And would it be worth it or should i just buy a new one

[@GaryFerraro]

The 300Z has same unit? internals may be the same, would have to look into that

[@brianstevens2889]

Hi on my RE4R01 when I opened up my pump it is missing 3 of the vain’s. So somebody was in it. I got new parts but I am not sure of the direction to put the new rotar in I know how the old one was but don’t trust the person that did it before. Any help would be very much appreciated.

[@GaryFerraro]

does it look the same on both sides? or do you see witness marks where the converter sits inside the pump gear

[@brianstevens2889]

Gary Ferraro the only difference I can see is in the center on one side it is flush and the other is recessed a little I hope that makes sense

[@brianstevens2889]

Gary Ferraro on one side it will lock on to the stator and the other it doesn’t

[@GaryFerraro]

my e-mail is [e-mail] can you send me a picture of both sides

[@brianstevens2889]

So on the one side it is recessed and the other it is flush in the center of the rotor if that make any sense

[@tommynguyen02]

Hi Gary! I am attempting to rebuild my RE401RA from my nissan pathfinder 4x4. I had some issues with it jumping between gears (4-3)a lot so I think it might be a solenoid issue. also when I disassembled it, I noticed that the friction material has broken off the brake band and the rivets on the brake band ground down on the drum. can you resurface the drum to remove the imperfections? also what tool did you remove the accumulator pistons?

[@GaryFerraro]

+Cuong Nguyen One thing i would like for you to check for the jumping gears, is the pump slide actuator, its common for the actuator to get burred up and it sticks in the low pressure position. If the band is worn down and the drum is damaged where the band rides, it really depends how bad it is, you dont want to take too much off the drum because the band needs to stop the drum from turning when the band is applied, so you dont want the ends of the band to close together. How are the planetarys? The tool i use to remove the accumulator pistons is a pair of snap ring pliers. Gary

[@tommynguyen02]

+Gary Ferraro I am still familiarizing myself with the transmission but I'm guessing you are referring to a pin on the back side of the pump? I took pictures of the disassembly. the planetary gears looked fine to me. s2.photobucket.com/user/cuongnutz/library/SAC/RE401RA%20REBUILD%20NISSAN%20PATHFINDER

[@GaryFerraro]

+Cuong Nguyen The actuator is actually inside the pump, you have to take the bolts out, when the pump[ comes apart, you will see the pump gear and vains inside the pump slide(this is where the pump gear and vains ride) off to the side you will see the actuator, you have to remove the pump gear vains and slide(and slide spring) to get to the actuator, the underside of the actuator will be sharp and may be burred up, you will have to clean the sharp edges off. I show that in my video, its a common problem. Gary

[@tommynguyen02]

+Gary Ferraro thanks again! how do you go about cleaning the brake band drum surface? I was thinking about using some emery clothing and clean it by hand. I can feel the grooves with my finger nail. I also forgot to mention that transmission is from a 93 so my oil pump and torque converter are different but mostly I think from how the TC drives the pump gear. I'll take a look at the actuator. I had to rewatch your video again. I also will look at the rear of the transmission case. I think I recall seeing a check valve right in the back near the cooler line.

[@GaryFerraro]

I spin the drum on a lathe,doing it by hand should be fine. The rear of the case on early models had a check ball and spring(i think, its been awhile) i used to eliminate that, to get more lube to the planets. But the drum doesnt sound too bad, you should be able to fix that

[@pacheco464]

Am on abudget fixing my car got code po744 on trans re5ro5a awd infinity change converter clutch solenoid and do di same you tink if I buy a new converter and swap can fix it!

[@GaryFerraro]

Converter could be the problem, could also be a valvebody issue, the only way you would know if the converter is the problem is send it to someone local and have them cut it open to see if they find something wrong

[@sawtun3294]

Hi, sir ,my 2001 nissan pathfinder has harsh shifting at start driving and go a little bit and then slipping, may be at second gear. After that go normally. It becomes every traffic light. I think it is RE4R01A transmission. I don`t know the problem.It is clean inside the transmission. Clutches and seals are good condition How do you think sir?And then please help me to know how to put back anti clamp at low and reverse clutch assembly. Thank you very much,sir.

[@GaryFerraro]

So this this on 1-2 shift or 2-3 shift?

[@GaryFerraro]

My e-mail is [e-mail] e-mail me and i can send you info on the anti-rattle clip location

[@sawtun3294]

Thank you very much, sir, for your help. I changed all of the friction plates and seal, and cleaned the valve body nicely. Now, shifting is good. But I start driving, I press gas pedal, it jump 2 or 3 times,.I think not from transmission. Maybe some sensors. I've to find out.

[@GaryFerraro]

Glad to hear, thanks for the update

[@sawtun3294]

I like to learn, sir. In my job I can't learn too much. I have to clean the parts and help the rebuilder and help the person who install and remove transmission. They don't allow me to do myself. I've worked almost 4 years. This was the first-time I did my self. Thank you very much for your help, sir. I learn from your videos too. God bless you,

[@daltondegroff7395]

Can i use an re4ro1a if my nissan hardbody has the rl4ro1a . pls let me no

[@GaryFerraro]

No, that will not work, one is electronic the other is not

[@daltondegroff7395]

Oh okay thanks is there any other cars that have the rl4 or whats a key way to tell the difference in the two ?

[@GaryFerraro]

@@daltondegroff7395 Haven't seen one of those transmissions in years but the connectors should be different only a few wires and the other maybe 10 wire connector

[@daltondegroff7395]

Okay apreciate u replying but one more thing do u know if a 96 xe model nissan truck has. Re4 or rl4 it has the 2.4 in it

[@GaryFerraro]

@@daltondegroff7395 I ran the nissan truck through shop key pro and it only comes up with a standard shift for that engine size. I ran a 96 pathfinder and that does have the RE4RO1A

[@Brironman]

Hi Gary - did U see my comments below? I have the new filter and gasket here now. Any suggestions while I have the pan off?

[@GaryFerraro]

Please refresh me, are you doing a service?

[@Brironman]

I'm trying to solve the 3 -4 th shift issue. I've nvr changed the fluid so I started there by draining it thru the rad cooler line. My parts didn't arrive so I flushed it last weekend anyways - ( it cudn't hurt right?) - drove it and it seemed to shift a lot better from 3 - 4th on Saturday ...Drove Sunday and it didn't shift into 4th at all..and no 4th gear at all since then. Finally have a little time to pull the pan now. Read below. I, myself, replied to me..Sorry I messed that up. Thank You! We have avoided driving it as much as possible and use the other car most of the time.

[@GaryFerraro]

Question, does it just not shift into 4th or does shift and neutralize in 4th?

[@Brironman]

It doesn't shift into forth a all. I doesn't neutralize. thanx

[@GaryFerraro]

ok, you really need to see if the shift is being commanded, do you have a scan tool? I've seen a bad solenoid pack cause this and i've also seen a bad engine coolant temp sensor, but the big question is, is the shift being commanded

[@ЮлияБрондина]

где запчасти на неё найти?

[@chancey1979]

That Fluid looks like used Engine Oil. And People wonder why their Transmissions Fail. I guess doing a Drain & Fill which takes 5 minutes every 30k miles is too much to ask of people.

[@GaryFerraro]

agreed, good job on taking care of your trans. Thanks for watching

[@freddiecalderon4665]

do you still do this ?

[@GaryFerraro]

yes.

[@freddiecalderon4665]

@@GaryFerraro what part of the Country are you from and what is the job like that usually cost?

[@GaryFerraro]

@@freddiecalderon4665 Im in New York, depending on what is wrong, maybe 2000ish

[@dcomputers]

what does that servo cover operate?

[@GaryFerraro]

Band for 2nd and 4th

[@dcomputers]

@@GaryFerraro what if 4th isnt working. it just goes to 3rd without over revving as if its in overdrive mode. this servo isnt the issue?

[@GaryFerraro]

dcomputers If no 4th. First you have to see if fourth is being commanded by the computer. If the computer sees something like high engine temp or a problem with the Throttle position sensor may inhibit 4th gear. Are there any codes present? If all that looks ok could be a solenoid problem and possible servo too

[@dcomputers]

@@GaryFerraro tps is tested good and adjusted. no codes. removed valve body and solenoids I end up swapping it out due to damage gasket on body. after swapping. the old valve body it made no difference. its not solenoid issue or valve body so im wondering maybe servo. sometimes you could feel the weak engagement to 4th but drops out and continues in 3rd or overdrive

[@GaryFerraro]

@@dcomputers very well could be, did you by chance air check the servo when the valvebody was down?

[@Boom10ful]

I seem to have this transmission. It's been making this noise for around 40k miles now. Would this be the transmission pump? www.reddit.com/r/MechanicAdvice/comments/833u1f/2002_nissan_frontier_24l_transmission_noise/?st=jejj6h80&sh=f4a3251c

[@GaryFerraro]

That sounds like either a solenoid buzz or valve buzz, when you put the trans in gear does it go away?

[@Boom10ful]

Gary Ferraro Thanks for replying! The transmission is in drive, brake pedal applied and idling when it does this. It only makes this noise every once in a while but lately it's been more frequent. It only happens when the car is at a slight decline or if the driver side is slightly elevated compared to the other side.

[@faha8032]

الله يحفظك ويعطيك الصحة

[@GaryFerraro]

Translation, Thanks for watching