ZF8HP45 Teardown

In this video, i Teardown an 8 speed Transmission that basically stopped moving, The P2 Planet that splines onto the output shaft broke away from splines, Did the overhaul and worked real nice

[@Ragu8235]

Thank you, sir

[@ericdixon2898]

Love this channel!

[@LeonardoCostaUSA]

Wow!! I can not believe that !! How can someone afford that valuable service?

[@frankwrenchman4573]

Thanks Gary

[@PorcupineLiberty]

Wow that’s impressive. Like a surgeon on the operating table. Found this video because I have a 528 with a 8hp45 that is giving a p0890 code. Started after jumping someone off. When the code goes away it drives perfect for 4 days then it comes back. Stinks because I never know when it’s gonna happen and I end up stranded. All the shops want to do is replace the transmission which will cost me more than car is worth.

[@GaryFerraro]

what is the definition of the code?

[@PorcupineLiberty]

@@GaryFerraro the p0890 is TCM Power Relay Sense Circuit Low. The transmission code is 420531 output stages voltages supply: short circuit to ground.

[@igotaction]

It had a 12345 code which is interesting because that is the same code to get into my luggage. Awesome video I was waiting for this transmission.

[@GaryFerraro]

LOL, Good to hear from you Joel

[@imt5802]

Thanks a lot, Gary! There is always something new to learn when I watch your videos. Do you mind telling me how you remove the split-rings in general, because when I read through the ZF-Repair-manual for the 5hp24 for example, they always mention a mandrel-press and Special-tools, so I was wondering how you do it? Anyway, very helpful and absolutely informative! Keep it up

[@GaryFerraro]

I have a press and i found different size steel plates around the shop.

[@imt5802]

@@GaryFerraro thank you for the quick reply!

[@HanifEFIMechanical]

Good job

[@chuckswhip]

Love the videos…

[@KalebBroadhead]

You are a ZF god

[@rodrigomeca]

Thank you. My car shakes a lot when im driv8ng very slowly going up the hill. When i press the brake i feel something disengaging and the shaking stops. Could that be the lock-up clutch in the torque converter?

[@rllyhim2621]

Love the videos always so informative, I currently work for a dealer and want to get into transmission work any tips?

[@GaryFerraro]

some dealers do and some do not, they probably think much easier to install a reman, dealers around here do trans work

[@masood1362]

Thanks lot❤

[@Jobrated46]

You quoted on this video ": Segmented magnetic ring that reads the speed sensor " after viewing this video a few times I now know one of two my questions Thx

[@GaryFerraro]

In side the Trans you have the input and out put speed sensor,

[@hfsmuts7749]

Hi Gary if i replace my bmw automatic transmission will there be any programming that will need to be done with the new transmission to work in the car?

[@brahim55]

Great video ,so from where come from that gear ration fault ?

[@GaryFerraro]

from the P2 planet being broken from the output shaft

[@petar443]

Why did you sent the torque converter to converter shop?Leakage? Stator problem ? TC clutches problem?😊

[@GaryFerraro]

I had the converter overhauled, part of the rebuilding process

[@user-xc6ry4bv2p]

Hi Gary great videos! You are very generous with your knowledge and time….kind of rare these days. I have a zf6hp26 on a 4.4l Land Rover 2006 that shifts perfectly and no codes but the 2 to 1 downshift thump on slowdown is driving me crazy. Would a valve body overhaul fix this? Truck has done about 150k miles

[@GaryFerraro]

The 2-1 downshift bump, do you feel that when the car is hot?

[@user-xc6ry4bv2p]

Thanks for response mate! Yes, always no bump until transmission warms up.

[@GaryFerraro]

@@user-xc6ry4bv2p That may be a valvebody problem, either the solenoid reg valve or lube reg valve can be worn, Transgo has a kit for that. Will have to ream out the bore for oversized valve.

[@user-xc6ry4bv2p]

Thanks Gary for the advice. Assume changing solenoids, bridge seal etc would not help as the transmission is operating as designed (other than the car behind bumping me every time I come to a stop 😅😅)

[@GaryFerraro]

@@user-xc6ry4bv2p How many miles on the car?

[@Jobrated46]

I'd like to ask a question, RE: reluctor I'm noticing on. Cams and wheel speed sensors; they have magnetic Reluctors... Including at the flexplate - as for inside the zf8hp45 ? What part number and what is the part name inside the trans ? Also, since you may answer, one more... Question; after a couple comments... my truck has the pentastar 3.6 with obviously the zf8hp45, I'm aware that the zf8hp70 is to handle more torque to mate onto the V8 hemi... Can I swap my zf8hp45 for a zf8hp70 ? Most appreciated

[@BionLedBulbs]

Hi Gary, thanks for the video. I have an enquiry about my ZF8HP45 automatic transmission. The transmission oil was changed on 100,000 miles, and now the vehicle is on 139,000 miles. Recently, when the car shifts down from 6 to 5 and from 3rd to 2nd gear is kicking. I went to an automatic transmission specialist, and he ran a diagnostic. He checked for a leak, but no leaks or faults came up. What do you suggest I do next? Thanks in advance. Regards

[@ebrahimsadeghi5883]

Doee is matter if how muck pressure/psi we apply on the piston for air check Thanks 🙏

[@GaryFerraro]

should really apply around 50 psi, if you use to much you may not see a leak if there is one

[@TomekGarage]

Hello, could you give me links or the number of these special tools for opening clutch baskets? I mean those rings you're taking out of that gray suitcase. Thank you in advance, Tomek.

[@GaryFerraro]

A company called Adapt-A-Case has them, there part number is T-3500AC

[@TomekGarage]

@@GaryFerraro thank you 👍 Do these rings fit all 8hp gearbox models?

[@aldoaltamar5041]

Hi, good morning my friend

[@GaryFerraro]

Good Morning, Thanks for watching

[@alexanderstefanxandraswedi5835]

❤🎉😊

[@tchapps88]

Hi Gary, have you ever had to tear down a 8hp45 or 8hp70 that someone had mistakenly refilled with ATF+4?

[@GaryFerraro]

I have not, just have to try your best to get the fluid out and refill with lifeguard 8

[@danieltrujillo5593]

That piece that you take out at minute 9:45 I want to know what it's called, what function it performs and what its function is. Can you help me on this issue by explaining it to me please?

[@GaryFerraro]

That part you will only find on Start/stop applications, This is known as the H.I.S Pump (Hydraulic Impulse Storage) Pump. When you come to a red light and the engine shuts off, this pump keeps the clutch packs charged with oil so when the engine starts up again there will be no delay on take off

[@danieltrujillo5593]

@@GaryFerraro Haaa that's fine I understand. But I would like to know if I put power to that pump, does it work? Or is it its function or how do you know if that pump has a problem?

[@danieltrujillo5593]

You're going to excuse me because I have a lot of doubts because I don't know how to know if that piece doesn't work. That part can cause problems when changing gears. My BMW has knocks, the 2-3 gear from there runs fine. then I slow down and 3-2 makes the hit. What could it be, can you guide or help me? and in the scanner I don't get any errors

[@GaryFerraro]

sounds like maybe a bad clutch pack. how many miles@@danieltrujillo5593

[@danieltrujillo5593]

@@GaryFerraro then the problem is not the H.I.S. for that problem?

[@robertrobertson192]

Great video but I believe that's te not a zf the te845hp are made in America while the zf is German made , you can tell by the casing. Internals are all the same but I thought I'd point that out anyway.

[@baratrahmani4023]

Hi please post the build on

[@stingray6164]

where can p get a pair of those long snap ring pliers?

[@GaryFerraro]

Company called Adapt-A-Case sells them. The Yellow ones correct

[@stingray6164]

thanx@@GaryFerraro

[@mahmoudhantouli5434]

Please complete to next video

[@mahmoudhantouli5434]

I wish If I can work 4 you

[@user-cl9gl9oo4y]

Hi Gary, I have a 2005 Land Rover LR3 4.4l. The transmission won't go into 1st gear, it's stuck at 4th gear per my scanner. I can't move it w/o shutting it off, starting it back on and shifting to 'D' right away to move the SUV, ten to 15 seconds later, it will not move again. Am I looking at a solenoid issue? Thank you.

[@GaryFerraro]

Has the car been scanned for codes?

[@user-cl9gl9oo4y]

Hi Gary, sorry for the late response and thank you for responding. My mechanic did not keep the old codes. They have basically swapped the transfer case module with a known good one in hopes of solving the issue, not sure what this would actually do? I scanned with my AutelBt906, the codes I was able to pull are p2789-00 Clutch adaptive at its limit (intermittent) and u1a35-4a Vin Data (permanent).

[@GaryFerraro]

ok, so if you clear the codes the car should shift@@user-cl9gl9oo4y

[@user-cl9gl9oo4y]

I will try that tomorrow and advise, thank you

[@hfsmuts7749]

Hi Gary great video. Hope you can help me out i have a bmw f21 2015 model 1.8m sport problem with the car you can put it in drive and then go back into park code im getting 420641 and saying parking gear incorrectly engaged

[@GaryFerraro]

Trans is full of fluid? Have you tried clearing the code?

[@hfsmuts7749]

@@GaryFerraro Hi Gary. yes did try to clear the code but doesn't clear

[@hfsmuts7749]

@@GaryFerraro did al so removed all the fluid and fill again with new fluid stil the same changed the battery as well

[@GaryFerraro]

what kind of car is this?@@hfsmuts7749

[@hfsmuts7749]

@@GaryFerraro its a bmw f21 2015 model 1.8m sport

[@davesingh1859]

I just have a 2015 535 xdrive towed in with the same issue

[@GaryFerraro]

Check that P2 Planet

[@ebrahimsadeghi5883]

Could you share the link of test plate Thanks 🙏

[@GaryFerraro]

My Buddy got the plate for me, says on it Mopar 10383A

[@danthecarman8440]

Hi there. I have a zf6hp-28 on a Jaguar and im getting p2704 friction element e apply time. It only happens after half an hour of driving. We have already replaced the E Clutches and bushes and accumulators. Any suggestions please ? as im at a lost. Many thanks.

[@GaryFerraro]

you have 1 of 2 problems, either your rear stator bushing is worn or solenoids mechanically clogged. Being the fact that it happens when warm, i would think the rear stator bushing is your problem

[@danthecarman8440]

@@GaryFerraro Many thanks for your kind reply. 🙏

[@CarlosGuzman-bs1vi]

My 2014 328i is giving me a transmission not in park error message and right before that the car is stalling. I had recently changed the Mechantronics that came with new solenoids as the car was hard shift over 2k rpm’s. The new one fixed that issue but now the car is giving me that stalling issue then giving me the transmission not in park message and can’t change gears anymore. Any thoughts on what that could be?

[@GaryFerraro]

Scan for codes

[@CarlosGuzman-bs1vi]

@@GaryFerraro I have a check engine for mass airflow sensors but I replaced and it still has check engine light. Need to go check again. Is there a different way to check codes?

[@GaryFerraro]

Trans has it's own TCM, did you scan the TCM@@CarlosGuzman-bs1vi

[@CarlosGuzman-bs1vi]

@@GaryFerraro no how do I do that?

[@GaryFerraro]

hook up a scanner and select transmission, have your key on and engine off, Do you have a scanner or know someone that does. Some cheap scanners may not be able to scan TCM@@CarlosGuzman-bs1vi

[@danieltrujillo5593]

9:45

[@chuckswhip]

How much should a transmission rebuild cost ????

[@GaryFerraro]

These 8 speeds start at around 5K

[@rafihussain]

Sir. Ya hd bn videoing from a long time. I again request a hd 4k quality content. Lighting need ur attention. Thanks

[@GaryFerraro]

maybe lighting, uploaded in HD

[@baratrahmani4023]

Hi please send me the air check all clutch please

[@gand3061]

Im korean i had 420421 ,421342

[@casualobserver620]

@26:45.....well, guess who is working on a Jeep. And finding a source for the shell...?????

[@GaryFerraro]

Have you tried Erickssons for the part

[@casualobserver620]

@@GaryFerraro Erickssons????

[@casualobserver620]

@@GaryFerraro I finally found Eriksson Industries (??) but they never answer the phone. Chrysler discontinued ALL internal parts for this unit.

[@GaryFerraro]

They were just busy, try again on Monday@@casualobserver620

[@richH1625]

! amazing videos . So much knowledge ! Thankyou. __________________ just asking this here as its the most recent video,,, Do you happen to have a video of the correct way to check atf level? Is it the same in all boxes? Ive seen references to : engine running; hot; check level but ive also been told : engine running; hot; (chock wheels); run slowly through R D S L back to parkP; check level Thanks. ____________ particularly Mazda Friendee year 2000 2wd apparently en.m.wikipedia.org/wiki/Jatco_4R01_transmission

[@GaryFerraro]

Car needs to be on a lift and should be hot when checking the Trans fluid