New transmission at 17750 miles

[Stevedbvik1]

How's the whole trans toast at 17k on a vehicle barely a year old?!

THAT is crazy. ? I'm glad they're doing it for you. Just so odd. You should have the updated drum. You'd think it would only require, at worse... a new valve body to be up and running again.

Why's the whole thing toast. That's nuts. Not confidence inspiring.

It’s a 2022. Took delivery 03/31/22 so it’s two years and 3 months old. It didn’t have the updated drum because it was built before 08/16/22.

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[Stevedbvik1]

New and improved 22? Guess not...

Mine was pre-new and improved ( 03/22 build)

 

[Stevedbvik1]

Ok, I have my Ranger back ?. Just a 3 mile drive home on side streets so nothing to report yet. Besides I have to put some miles on it to do it’s learn thing. In the shop just short of 3 days. Had them check the slip yoke while they had the d/shaft out and all good there. They had no problem swapping my Fitzstick onto the new transmission. Just billed me an hour to do it. Wasn’t going to argue with them. Again it’s been a really good and smooth process for me. I’m lucky to have a good dealership.

 

[LawnMM]

It’s a 2022. Took delivery 03/31/22 so it’s two years and 3 months old. It didn’t have the updated drum because it was built before 08/16/22.

Ugh. Sorry man. I guess it's faster to swap in a new one than tear down and replace the drum.

 

[ctechbob]

Ugh. Sorry man. I guess it's faster to swap in a new one than tear down and replace the drum.

Probably cheaper in the long run for them. By the time that bushing moves, the trans has been slamming and slipping shifts to some extent, so it has probably chewed through some of the frictions. No sense tearing the thing down to replace the drum and not replacing the frictions, so now you're starting to stack a bunch of labor on to the tab. You've also now shed all that material into the trans, which is also not great.

Better to just swap in a unit, get the other one back as a core, do the failure analysis, and start up your remanufacturing program.

 

[ctechbob]

Ok, I have my Ranger back ?. Just a 3 mile drive home on side streets so nothing to report yet. Besides I have to put some miles on it to do it’s learn thing.

Here's your learning cycle.

The Adaptive Learning Drive Cycle is performed on a level road as follows:

1. Record then clear DTC’s
2. Drive the vehicle until the engine and transmission reach normal operating temperature.
3. Accelerate from a stop with light throttle (15%), ensuring that upshifts 1st through 8th occur at engine speeds between 1300-1600 rpm.
4. Continue to accelerate (may apply slightly more throttle after 7-8 upshift at 32-38 mph (51-61 km/h) until you achieve 55 mph (88 km/h) and the 8-9 and 9-10 shifts complete.
5. Brake gently to a complete stop and hold the foot brake for five (5) seconds.
6. Shift the transmission to Neutral. Wait 1 second.
7. Shift the transmission to Reverse. Wait 2 seconds.
8. Shift the transmission to Neutral. Wait 1 second.
9. Shift the transmission to Drive. Wait 2 seconds.
10. Repeat Steps 3 through 9 six (6) additional times.

After the final step, place the vehicle in park and cycle the ignition key off. Wait 3-5 minutes before driving to ensure enough time for the coding to be written to the module.

 

[Jhbryaniv]

Here's your learning cycle.

The Adaptive Learning Drive Cycle is performed on a level road as follows:

1. Record then clear DTC’s
2. Drive the vehicle until the engine and transmission reach normal operating temperature.
3. Accelerate from a stop with light throttle (15%), ensuring that upshifts 1st through 8th occur at engine speeds between 1300-1600 rpm.
4. Continue to accelerate (may apply slightly more throttle after 7-8 upshift at 32-38 mph (51-61 km/h) until you achieve 55 mph (88 km/h) and the 8-9 and 9-10 shifts complete.
5. Brake gently to a complete stop and hold the foot brake for five (5) seconds.
6. Shift the transmission to Neutral. Wait 1 second.
7. Shift the transmission to Reverse. Wait 2 seconds.
8. Shift the transmission to Neutral. Wait 1 second.
9. Shift the transmission to Drive. Wait 2 seconds.
10. Repeat Steps 3 through 9 six (6) additional times.

After the final step, place the vehicle in park and cycle the ignition key off. Wait 3-5 minutes before driving to ensure enough time for the coding to be written to the module.

I am assuming he is referring to when they tell you it will shift firmly while it learns over the days or weeks.... And eventually it will "learn" and be smoother...

 

[ctechbob]

I am assuming he is referring to when they tell you it will shift firmly while it learns over the days or weeks.... And eventually it will "learn" and be smoother...

It will learn just by driving, that is true, but the quicker/proper relearn is what I posted above.

Reason it shifts firmly is that it assumes the 'worst' so it ups line pressure to make sure and get the shifts done quickly with as little slippage as possible. Once it figures out it doesn't need to be so aggressive, it backs things off a bit.

What it is doing when you follow the procedure is that it is performing the shifts under controlled circumstances so that it can measure how long things take from shift to shift.

I don't have a breakdown for a 10R80, but here is info from a ZF8 which also uses an adaptive system for its programming:

https://gearsmagazine.com/magazine/the-zf-8-speed-transmission-fluid-and-filter-change/

You can see where it tracks fill pressure and fill time. That's what the transmission is 'adapting' to over time. Also why the transmission can maintain its performance over the lifespan of the clutch packs. As they wear and start to require more distance to engage properly, the TCU can up the line pressure and open the valves more/faster to keep the end result the same.

 

[Stevedbvik1]

@ctechbob @Jhbryaniv , I was referring to the just drive it scenario. Just like I did after they replaced the valve body. What I am wondering about is the highlighted comment by the tech . Could he have already done the procedure? They did put close to 80 miles on it while they had it.

 

[ctechbob]

@ctechbob @Jhbryaniv , I was referring to the just drive it scenario. Just like I did after they replaced the valve body. What I am wondering about is the highlighted comment by the tech . Could he have already done the procedure? They did put close to 80 miles on it while they had it.

I would say that is very possible. If that's the case, it is all done. Shouldn't change much after that point. Not much else it would need to adapt to other than normal wear.

 

[CP0861]

I'm about to take mine back....I've had the valve body overhaul and the CDF step completed (each done separately) and I saw some improvement and some of the quirks went away, but it's still not right.

I'm hoping they replace my transmission....if they don't, I'm going to get rid of it as much as I love it. I just bought a 2nd car to keep the miles down on my Ranger so I can get this BS resolved once and for all.

I'm not 100% certain, but I believe mine was built around March of 2022 also. I have 48k miles on it now and the transmission has been a constant headache. Love the truck, hate the POS transmission.

 

[CP0861]

No tune on mine , bone stock. Shifting strategy doesn’t prevent the CDF drum bushing from migrating. The updated CDF drum has a machined in step to prevent migration. When I would drive in tow haul it was less noticeable. Maybe tunes mask the issue until they can’t?? I wondered about the first step of the TSB being a reflash and if they were trying to mask symptoms with that

I've suspected this also. It's the reason I won't get a tune until I'm 100% confident in the transmission. As much as I want the issue fixed, I don't want to just hide it with the tune.

 

[RangerRock]

Had some similar problems, took the truck in and they replaced the valve body and driveshaft. No more bump at stop and start, and shifting very smooth so far, but just picked it up on 7/3/24 from the dealer. Had a great experience from the Service Dept. Thanks to this forum, I was able to write a well thought, detailed description of the issue. I really appreciate the contributors here. Thank you!

 

[pismo1]

Had some similar problems, took the truck in and they replaced the valve body and driveshaft. No more bump and stop and start, and shifting very smooth so far, but just picked it up on 7/3/24 from the dealer. Had a great experience from the Service Dept. Thanks to this forum, I was able to write a well thought, detailed description of the issue. I really appreciate the contributors here. Thank you!

Yep,painting a clear picture really helps.So far no issues,but good to know to forum is here.I know Jeeps pretty well but Ford not so much.

 

[Jhbryaniv]

It really does help when you have a service advisor, and department that is not useless.

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