U660E Highlights

In this video, I go through a 6 speed U660E Trans. I had a delay in drive when hot, I show what I found to cause this problem as well as other common issues. Thanks for watching.

[@autorobots_ng]

Thank you so much. I am tackling no forward, no reverse, No dtc code. Found out turbine speed TC is zero when in drive. Pump is ok, fluid comes out of cooler. I already dismantled and im seeing faults in torque converter and b1 clutch. I will replace these and see how it plays.

[@chamankhan4606]

You are the best explainer in the word so nice

[@GaryFerraro]

Thank you

[@swimfan6292]

you are a legend. am not surprised you took this one apart. thanks for showing

[@AmandaLena-e6r]

Gary keep it up you are a great teacher

[@CubasAutomotive]

Excellent video as usual. Even though this wasn't a teardown video, it wasn't far from it. Extremely detailed, lots of great info & tips. I specifically enjoyed the proof of concept of checking the leak at the rear cover. Removing that bearing so that pack is seated at a different position in the cover, which truly identifies that groove in the cover as being the issue. Very thorough! Happy Father's Day Gary! Big hugs! 😊😊🤗🤗

[@GaryFerraro]

Cuba's Automotive Thanks Cuba. Hope the video helps someone not much out there on this transmission. Have a great day. Big hugs back at you 😊

[@billk5727]

Thanks Gary. Nice to see you go through and prove the problems with this unit. Take Care, Bill

[@GaryFerraro]

Thanks for watching, glad you enjoyed

[@barbarabeckley8732]

Great explanation. Awesome work.

[@travismarshall1481]

I have a 2009 Aurion. This Winter im noticing a delay in drive when cold. It goes into drive fine. But shifting up from crawling pace it's indecisive in the first couple of gears

[@AkFerarri]

I so much understand but I need when you gonna couple it back most especially the reverse

[@MrCee861]

Great video, thank you. Question, will that problem return, does the remanufactured ones have the same potential for failure? Thanks in advance. I'm about to get a Toyota remanufactured one install but i'm concern because they only offer 12 month warranty.

[@ykmtjtyjm]

I'm having problems with the C2 piston, it engages but doesn't hold pressure like the C1 piston does. Is it normal to disengage when air is not applied continuously? I also put new sealing rings on the end cover.

[@AkFerarri]

Oh ! You just replace the cover ?

[@zig8100]

Nice video. My u660e in my camry is running great at 144,000K but my mechanic just discovered a really really small leak from the bell housing. He thinks it's the input shaft bore issue. How much you think to fix that?

[@GaryFerraro]

If from the front, it would be a Front seal, pump o-ring or even something with converter. I would clean this down and drive it a few days and see if reappears , is the fluid full? Make sure the axle seals are checked as well

[@zig8100]

​@@GaryFerraro thank you

[@aaronpreddy35]

Hi Gary wonderful video. I have been thinking about upgrading my Valve Body and put the BOE Shift Kit on. But I'm wondering if I should be putting the effort into overhauling the pistons now or perhaps other parts you mentioned.

[@GaryFerraro]

How is it working?

[@aaronpreddy35]

@@GaryFerraro It's working fine with the morning shift flare. But recently I've noticed it dropping a gear or shifting up from gears 234 or holding a gear for longer than usual.

[@GaryFerraro]

@@aaronpreddy35 may want to try a transmission service and reset shift adapts

[@VILSONDUSEVIC]

Those transmissions tend to flare when cold, and sometimes even when hot. One day it flares like hell, next day no flare and shifts like new. Do you have any solution for this?

[@GaryFerraro]

I would say that's either valvebody or molded pistons

[@TheMMAVOICE]

Pretty much my trans right now. She got almost 200k miles so not bad I suppose

[@SoseyTR]

Hello! I have the same trans on a Sienna. Switching to reverse occasionally causes shudders especially when backing up uphill. Do you happen to know what could be the culprit? Thanks

[@GaryFerraro]

Very possible an issue with the B3 clutch, this also houses the underdrive planetary set that always goes bad

[@SoseyTR]

@@GaryFerraro Thank you for the information. So , based on this diagnosis, will you eliminate the possibility of bad solenoids or these problems can be concurrent?

[@GaryFerraro]

@@SoseyTR how does this work on the upshift? how is the 2-3 shift?

[@SoseyTR]

@ the upshift seems fine. I was experiencing some vibrations forward at some point but it got much better after changing the trans oil and filter. The reverse has been shuddering especially uphill for some time but this does not seem to affect the forward motion.

[@TheBenjammin]

The problem these transmissions have with the race and bearing spinning in the housing just as you found in this video...is that caused by too much torque from the motor or the "lifetime" fluid not lubricating properly? Thanks for the video.

[@GaryFerraro]

They say its from the torque from the motor, this does not happen on 4 cly units which is called U760

[@TheBenjammin]

@@GaryFerraro Bummer. Thank you for the reply.

[@GaryFerraro]

@@TheBenjammin sure, no problem

[@MrCee861]

@@GaryFerraroany way to correct this? I will have Toyota install a new remanufacture unit for a venza v6.

[@bbstacker70]

Man, what an outstanding video. Well presented and great audio...you and the equipment. In your experience, have you ever heard what the pump volume is in gpm? I am installing an external cooler with a thermostat. There are two option, up tp5 gpm and up to 20 gpm. There is quite a price differential, so I want to be sure if I need the 20 gpm unit. Thanks again for a great video.

[@GaryFerraro]

well, if you pull off a cooler line, they say you should get a quart in 20 seconds

[@AhmedMohamed-hk3io]

Greetings Mr. Ferraro , I have U760e with P2716 Code , so I had replaced the OEM SLT solenoid and the harsh shifting had gone ,but still the reverse not engaged when transmission is hot ,no codes no forward issues only the reverse , Sometimes need to put into drive or neutral couple times to make reverse engagement . Any ideas Sir !

[@danielstarnes7354]

Hi Gary, thanks very much for the great video. I have rebuilt engines but this is my first transmission. My differential is bad ('07 es350) but no luck finding one, dealer wants $950 for new diff. Any suggestions? Thanks

[@GaryFerraro]

Parts are very hard to get, the last 5 Toyota's i got in had to go with dealer units, even used parts are hard to get.

[@danielstarnes7354]

@@GaryFerraro should I get a $2k LKQ trans with 100k instead of rebuilding mine? Seems like it. Will 2010+ u660e fit 2007-2009 motor with no issues? Thanks again

[@GaryFerraro]

@@danielstarnes7354 I'm Not sure, you would have to give LKQ your vin number and ask if it will fit, tooth counts on final drive may be different

[@MICHAELWALTON1]

please sir, how often for the overhaul and the work expected to be performed.

[@GaryFerraro]

Sorry, not understanding the question, are you asking how often i get these cars in? Currently for the U660, pistons are not available.

[@Concentratedpowr]

Hi Gary. Informative video and solid work. I've got a 2007 Toyota Camry XLE V6 U660E with error codes for the shift solenoids A and D. Do you know which solenoids those are as far as actual part numbers/location in the valve body? I'm thinking of just replacing the valve body with a reman instead of just those two solenoids. Sometimes the car won't engage in drive unless I shut the car off and restart it. I added 3/4 of a quart Toyota WS with the proper fluid level check procedure, but still throwing the same solenoid A & D codes and intermittent failure to engage in drive. I've got 220k miles on it, so it might just be time to let it rest. Input appreciated.

[@GaryFerraro]

What are the code numbers? I can send you some info, e-mail me at [e-mail] then i will send you some info

[@Concentratedpowr]

@@GaryFerraro e-mail sent. The codes are P0746 and P2714

[@marklance033]

Where cab I get a good complete rebuild kit? Any more videos?

[@GaryFerraro]

As of late, parts are not available for this trans, the last 4 i did had to go with Dealer units, the pistons are not available

[@misterispusovcikas9066]

Hello there, i have a v6 07' camry with hard shift from 35 mph when hard accelerating (probably third to second gear im not sure). Medium accelerating lets it shift smooth. Accelerating hard from 0 mph lets it shift smooth as well what could the problem be. Well at least what I could predict? Fluid and filter changed recently

[@jiahaoru483]

Hello, I would like to ask how many kilometers should the U660E need to change the Transmission Fluid after driving，thank.

[@GaryFerraro]

I would say every 30K miles

[@jubrie1758]

Anyone know the power rating for this transmission?

[@BigDipper79]

Have you ever heard of cleaning solenoids with mass airflow cleaner?

[@GaryFerraro]

i have not but if it works, give it a shot.

[@esmeailjavid2162]

Hi, it was awesome , thanks a lot

[@shaneolean1396]

I watched a video on changing the fluid in this transmission, and it said you need a vacuum pump and a special straw tool in order to check the fluid level. Can you really just fill until the fluid comes thru that red straw on the bottom of the pan? That would make things much easier.

[@GaryFerraro]

Yes, with engine off fill til it comes out stand pipe, the start the car and fill until it comes out of the stand pipe. To drain just drop the pan

[@jeffpine3036]

The transmission shop would have to wait until transmission is between 105 to 113 without the atf tool gauge tank and vacuum system

[@DunaevDriveOk]

Спасибо, все понятно и доступно👍

[@weldean46]

thanks once again Gary nice video just got one of these in the shop 2013 toyota sienna awd

[@GaryFerraro]

I just finished a U760E in a Toyota Camry.

[@wilfredkidd6939]

Great job 👍

[@ryanbemail]

Have you seen any problems with temp sensors on that trans? Not much information on it for diagnosing, got sienna at my shop, with intermittent sensor electrical/ and performance code, repair instructions on Mitchell says transmission has to come out

[@GaryFerraro]

I have not seen these with temp sensor codes. What codes do you currently have?

[@ryanbemail]

Gary Ferraro I will look in the morning, one of the was tamp sensor electrical/ which I am optimistic about, the other one is a performance code, I looked on freeze frame data, to see where temp was, no data available, she saids it does it after she drives it for extended periods of time, I wonder if it’s over heating? Have not duplicated it yet

[@ryanbemail]

I called Atra, they have not heard of it yet neither

[@GaryFerraro]

Let me know codes. Where is your shop?

[@ryanbemail]

Gary Ferraro in Tampa

[@JosePerez-fw1zj]

Do you make updates to the valve body?

[@GaryFerraro]

This body was ok, but i would just go with a reman from my supplier

[@passqua]

Thanks for sharing this message very well explained

[@JesBu]

One question. What do you think about this transmission U760E, is it good? Do you know if they have quality issues or defects? I have read they have some issues with the torque converter. Thanks for your support.

[@GaryFerraro]

Yes, they have issues with the converter. They also have issues with the molded pistons which will cause a slip on the 2-3 shift. High mileage cars the valvebodies tend to get bore wear

[@JesBu]

@@GaryFerraro one question, what do you think could be the best way to extend the transmission life without issues? What would be your recommendations??

[@jeffpine3036]

@@JesBu change fluid every 60,000 miles filter every 100,000 miles Toyota atf ws fluid only

[@tomderush1461]

Curious, the spacer in the pump has a high ridge and a low ridge, which way is up?

[@GaryFerraro]

There is a snap-ring that goes in right after that spacer correct?

[@tomderush1461]

@@GaryFerraro yes sir that is correct

[@GaryFerraro]

@@tomderush1461 I believe that ridge faces up, will double check

[@tomderush1461]

@@GaryFerraro that is what i did, after stacking the clutch pack both ways it seemed the clearance was best with the higher ridge facing up, thank you for your time, your videos have helped me more than once. Have a good night

[@GaryFerraro]

@@tomderush1461 You too. Thanks

[@pedrohernandez8516]

Where do you get the drum/shaft with the piston bonded to it ?

[@GaryFerraro]

If looking for it as an assembly, used hard part companies should sell it

[@johnmattiazzo3900]

After this rebuild do you use low viscosity fluid or other spec

[@GaryFerraro]

I use a premium synthetic fluid

[@ramazanbayramoglu7163]

İşüüülikqşvlaöl wi-fi

[@onlinerevolution9832]

Hello Gary please tell me how to press out the planetary?

[@GaryFerraro]

Large nut has to come out, then i used a bushing driver that fit on the inside lip of the planet(about half way down on the inside of the planet). This way i saved the threads and installed a new nut.

[@onlinerevolution9832]

@@GaryFerraro Thank you Gary!!!

[@LOSPATHOS2406]

After a rebuild a U660E shop used mercon V, which I replaced for WS after as soon as I knew. what could cause a hard shift from first to second gear? and sometimes from 5th to 6th gear also

[@GaryFerraro]

Possible valvebody problem or not resetting shift adapts or memory reset. Is this ok cold and not ok hot?

[@LOSPATHOS2406]

@@GaryFerraro Thanks for taking the time to answer. They did the resetting twice already, which fixed some other problems but the hard shifts. The problem is present in both conditions, hot and cold. Could it be a oil level related issue also?

[@GaryFerraro]

Ok question. When the adapts were reset did it change anything? Did it shift better for a little bit and then go back to hard shifting?

[@LOSPATHOS2406]

@@GaryFerraro there was no change at all in the had shifts after the reset. Thanks again.

[@littlebearish]

So I have an 11 Camry with the 2.5L and the U760E. I have an issue with the lockup for the converter. The 1-2 shift is okay but as soon as it shifts to 3rd I'm getting full converter lockup. Or stays locked through the rest of the gears unless I kick it down it will disengage like it's supposes to, but once it re-engages its full lock again. I used a snap-on scanner to monitor the lockup status and it doesn't switch to lock until it's in 6th gear. It seems like I'm getting full lockup when I should be getting partial lockup. Other than that everything seems to operate as it should. All the shifts are there and solid. I an thinking it could be a TCM issue, do you have any suggestions? Also, if I replace the TCM with the same part # will it have to be programmed or is that a plug and play module? Any info or suggestions is greatly appreciated. Thanks...

[@GaryFerraro]

Is it throwing any converter codes? Maybe try a memory reset see if anything changes

[@littlebearish]

@@GaryFerraro No codes at all. I tried a KAM reset and nothing changed. There was a TSB for trans related issues so I took it to the Toyota dealer to have the software updated but still no change.

[@GaryFerraro]

Jed Brown Going to see what I can come up with.

[@littlebearish]

@@GaryFerraro I sure appreciate it. Thank you.

[@IkeMore-r9j]

How much for this, reverse clutch seal

[@GaryFerraro]

Are you talking about a piston?

[@이영민-x9n]

👍👍👍

[@SibRevs]

My transmission on my 2007 ES 350 has a shift flare from 3rd to 4th gear only when cold. I read that this is a relatively common issue on early U660 transmissions. Otherwise, it seems to be shifting fine. Any recommendations to help rectify this issues?

[@GaryFerraro]

The fluid level was checked? If fluid is full, maybe a lazy solenoid. you could also try to reset shift adapts or on toyota it may be a memory reset

[@SibRevs]

When I checked the fluid, it was pretty dark. I did two transmission services (replacing about 4 quarts of ATF) and now the fluid is a dark red. I haven't dropped the pan. The shift quality overall has seemed to improve but the aforementioned flare is still present.

[@GaryFerraro]

@@SibRevs Pretty much if the memory reset does not work, have internal problem

[@SibRevs]

Alright. Thanks for the input.

[@GaryFerraro]

@@SibRevs sure

[@luisjacome2461]

How can i check C2 application?

[@GaryFerraro]

Would have to drop out the valvebody. Not sure of the port. But if needed I could probably send you some info

[@onlinerevolution9832]

Gary Hello, tell me buzzing solenoid SLT, replace it?

[@GaryFerraro]

Does the car have any issues? does it buzz all the time? what about when drive is selected?

[@onlinerevolution9832]

@@GaryFerraro Camry 40 3.5 2007 with the ignition on, the SLT solenoid buzzes and vibrates.

[@onlinerevolution9832]

The car is driving normally.

[@GaryFerraro]

@@onlinerevolution9832 Do you hear the buzz all the time?

[@onlinerevolution9832]

@@GaryFerraro Yeah Gary buzz all the time try to throw off the video.

[@SovereignKnight74]

Is gear werring/whining normal for this transmission while in operation?

[@GaryFerraro]

I would ay no to that, on these transmissions the main case wears out , when this happens the geartrain is not running true and can possibly make noise

[@riddjo]

I have a 2014 Toyota Sienna with 78000 miles and it's starting to make bearing noise whirring noise. Makes noise at 50-65 miles per hour and sounds like a bad wheel bearing but if I put it in neutral the noise stops completely then when I put back in drive the noise will come on again as you continue to drive. Would this be the main case pressed in bearing and case weakness ?

[@الجهني296]

Why u660e more problem ?

[@GaryFerraro]

the valvebody bores tend to wear out and the molded pistons give problems too

[@alisair2113]

Dear brother Problem with Jeep Liberty code p0750 I hope you can give me the solution please brother

[@GaryFerraro]

That is an electrical code, do you know what transmission you have? what is your engine size and year of the jeep?

[@alisair2113]

Welcome Brother Engine 37 liter petrol automatic transmission in2005

[@GaryFerraro]

@@alisair2113 Ran the stats on the jeep, it may be a 42RLE, you need to get to the PCM to ohm the solenoids. If you clear the code, it comes right back?

[@alisair2113]

@@GaryFerraro Dear brother, I only know when I am scanning the code code 750. I am confused because there is no one to fix it in my country. I hope you can guide me please.

[@GaryFerraro]

ali sair is there anyway you can confirm transmission type. Do you know where the PCM is?

[@davidatac9738]

Back in the day when you could get piston kits ! No where to be found now

[@GaryFerraro]

you are correct, just had to do 2 dealer reman units

[@oceanzhu1002]

Would you say this unit is still generally reliable? Or I should avoid it. Because I know when they first came out in like 07 with the camry v6 they have trouble with shift flares 2-3, 3-4, 4-5. I think they fixed that problem later on right?

[@GaryFerraro]

Well, the valvebodies are a big problem still and they also have issues with the molded pistons

[@oceanzhu1002]

@@GaryFerraro Good to know, thx.

[@lance1097]

Good video. Thanks

[@pedrohernandez8516]

C1/C2 DRUM looks like a U760E

[@GaryFerraro]

yes, the transmissions are similar

[@GaryFerraro]

Zezo Alansay, Your post did not show, you can e-mail [e-mail]

[@JuanCruz-nq5vt]

Cover no good

[@GaryFerraro]

correct, big ring groove causing the delay in drive when hot

[@deft1abc1]

@@GaryFerraro what causes the groove?

[@GaryFerraro]

@@deft1abc1 Well, I looked at everything, bushings, bearings and really did not see much, I think it must be something with the cover itself, also because this is the first time im seeing this issue, possibly the cover not machined correctly, There wasn't even 70K on the mileage.