Transmission slipping and rough shifts

[Frenchy]

Probably 250-300 miles.

Unfortunately that isnt even enought for the transmission to learn. Got to drive it closer to 5K for it to be close to learned. By the way when you install the tube the transmission will go right back into learn mode as all the transmission learn tables will be cleared.

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[Shoran12]

Unfortunately that isnt even enought for the transmission to learn. Got to drive it closer to 5K for it to be close to learned. By the way when you install the tube the transmission will go right back into learn mode as all the transmission learn tables will be cleared.

This is what I was thinking. Could still be adapting some of the shift points, gear selection, and internal clearances. I was reading that once the transmission learning is reset on truck with a bit higher mileage, it may take longer to adapt because the changes theses transmissions make are very small. So the more wear on internal parts the more micro adjustments that are needed hence the longer time to smooth out. That’s was in one of the more detailed 10r80 articles posted on here. But if time permits, it’s never a bad idea to have it looked at again while still in the warranty phase.

 

[ctechbob]

This is what I was thinking. Could still be adapting some of the shift points, gear selection, and internal clearances. I was reading that once the transmission learning is reset on truck with a bit higher mileage, it may take longer to adapt because the changes theses transmissions make are very small. So the more wear on internal parts the more micro adjustments that are needed hence the longer time to smooth out. That’s was in one of the more detailed 10r80 articles posted on here. But if time permits, it’s never a bad idea to have it looked at again while still in the warranty phase.

This is posted elsewhere, but this is the procedure to properly relearn the adaptives.


"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."

 

[NOVA_Ranger]

This popped up at the tail end of my warranty, which is why I’m less inclined to wait it out. If I give it to much time I’ll miss my window. I don’t recall long learn times when installing or removing tunes on the truck in the past. I appreciate the input!

I’m tempted to just install the tow tune, which I plan to leave on indefinitely, and run through that relearning procedure. Thoughts?

 

[Shoran12]

This popped up at the tail end of my warranty, which is why I’m less inclined to wait it out. If I give it to much time I’ll miss my window. I don’t recall long learn times when installing or removing tunes on the truck in the past. I appreciate the input!

I’m tempted to just install the tow tune, which I plan to leave on indefinitely, and run through that relearning procedure. Thoughts?

You could definitely try that. I’ve been trying to figure out the best place near me to do this procedure but it’s hard to find a road to myself. If you have the time I’d take it in before warranty ends just take make sure but I doubt the dealer would find much wrong unless it’s throwing codes or something is very obviously wrong. Worth a shot though.

 

[Shoran12]

This popped up at the tail end of my warranty, which is why I’m less inclined to wait it out. If I give it to much time I’ll miss my window. I don’t recall long learn times when installing or removing tunes on the truck in the past. I appreciate the input!

I’m tempted to just install the tow tune, which I plan to leave on indefinitely, and run through that relearning procedure. Thoughts?

Thinking about it more, may not be a bad idea just to take it down and explain what’s going on and get them to document your concerns. That way if something did happen after your warranty you at least have a paper trail and may be able to argue that you’ve had it in with issues prior to your warranty ending and that the issue was present while still under coverage. I’m not sure how most dealerships handle situations like that however.

 

[NOVA_Ranger]

Thinking about it more, may not be a bad idea just to take it down and explain what’s going on and get them to document your concerns. That way if something did happen after your warranty you at least have a paper trail and may be able to argue that you’ve had it in with issues prior to your warranty ending and that the issue was present while still under coverage. I’m not sure how most dealerships handle situations like that however.

That was what I was thinking too, get it documented while still under warranty at least. Not overly concerned, but something still strikes me as being 'off'.

 

[9zero1790]

Update: my truck is shifting better after the recent repairs. However, it is still not shifting properly, or like it used to before my issues first popped up, so I plan to take it back in for another look. At the tail end of my warranty and I want to get it sorted out before that expires. Kept the truck on the stock tune after suspecting that it might go back in soon.

Current issues are rough shifts, but not as rough as before the recent repairs and I'm no longer noticing the excessive pauses and slipping between shifts when the transmission isn't up to operating temperature.

I'll keep you all posted and should have the truck in for another look during the week of February 20th. Stuff happens.

ill be watching closely to see what the dealer says. mines having the same issues.

 

[ccasanova22]

Mine is consistently slipping and banging when driven gently to the point where even Cruise control doesn’t produce clean shifts. I called the local dealer for an appointment…booked for weeks!

Hope some of you have better luck with getting the issues resolved and in a timely manner.

 

[NOVA_Ranger]

I had zero issues with the transmission, and the whole truck, until this popped up about 6 months ago (around 50k miles). I'll keep everybody posted after I get it in to the shop again. Until then I plan to limit driving it. Just picked up the little Fiesta ST that I posted elsewhere in the forum, so I have that to zip around in.

 

[Shoran12]

Mine is consistently slipping and banging when driven gently to the point where even Cruise control doesn’t produce clean shifts. I called the local dealer for an appointment…booked for weeks!

Hope some of you have better luck with getting the issues resolved and in a timely manner.

Have you changed out your EGR sensor yet? I can’t remember if you had. A lot of folks have had luck with replacing that. Some thought they needed a new transmission but it turns out they had a bad sensor.

 

[NOVA_Ranger]

I opted to drive my truck to work today (70 miles round trip) and see how the transmission acts. For the drive in, some shifts are still a little off...slight pause between shifts, can feel the shifts when this happens but I wouldn't call it a 'hard shift' like I was experiencing before the valve body was replaced. I'm inclined to think that the ongoing 'issues' involve the computer continuing to learn after being reset, as others suggested.

If nothing new/worse pops up on my drive home today I plan to cancel the follow-up appointment, install my LMS tow tune, run the truck through that relearning procedure, and see what happens. If the transmission just seems to be working through the relearning process again, without any slipping or hard shifts like I experienced before, I'll consider everything good to go. My intent is to install the tow tune and leave it on indefinitely, so hopefully the learning process plays out and no more transmission issues in the future. All things considered, I think that replacement of the valve body solved the root issues and everything I'm experiencing now is software related.

As promised, I'll keep everybody posted. Thanks again for all the comments and input!

 

[Shoran12]

I opted to drive my truck to work today (70 miles round trip) and see how the transmission acts. For the drive in, some shifts are still a little off...slight pause between shifts, can feel the shifts when this happens but I wouldn't call it a 'hard shift' like I was experiencing before the valve body was replaced. I'm inclined to think that the ongoing 'issues' involve the computer continuing to learn after being reset, as others suggested.

If nothing new/worse pops up on my drive home today I plan to cancel the follow-up appointment, install my LMS tow tune, run the truck through that relearning procedure, and see what happens. If the transmission just seems to be working through the relearning process again, without any slipping or hard shifts like I experienced before, I'll consider everything good to go. My intent is to install the tow tune and leave it on indefinitely, so hopefully the learning process plays out and no more transmission issues in the future. All things considered, I think that replacement of the valve body solved the root issues and everything I'm experiencing now is software related.

As promised, I'll keep everybody posted. Thanks again for all the comments and input!

Thanks for the update. How “hard” would you describe your hard shifts that led to the valve body replacement? I’ve been wanting to go through the learn procedure but for the life of me can’t find a road where I can get up to speed then slow down to a stop on and mess around with the shifter. Guess I could always keep my hazards on lol. I was actually thinking about calling the police department to see if they know a road I can do this on. I’ve looked on google maps but it’s hard to tell how busy the roads are and I haven’t lived in this area long enough to have seen these deserted roads that my younger self would have had a hay day on.

 

[NOVA_Ranger]

Thanks for the update. How “hard” would you describe your hard shifts that led to the valve body replacement? I’ve been wanting to go through the learn procedure but for the life of me can’t find a road where I can get up to speed then slow down to a stop on and mess around with the shifter. Guess I could always keep my hazards on lol. I was actually thinking about calling the police department to see if they know a road I can do this on. I’ve looked on google maps but it’s hard to tell how busy the roads are and I haven’t lived in this area long enough to have seen these deserted roads that my younger self would have had a hay day on.

Before having the valve body replaced it started out as a jolting shift or two when the truck was cold. A few months, and maybe 5k miles, later it turned into several second pauses as it hung between gears, until the truck was fully warmed up. This got bad enough that the truck would rev like it was in neutral, when I tried to coax it to shift, and then a really harsh upshift once it decided to. It was bad enough that I worried about getting rear-ended when leaving a stop light while the truck was still cold (would take off fine in first fine and then hand before grabbing 2nd). There was no wondering if something was wrong, for sure.

 

[NOVA_Ranger]

Tune is installed. Noted that the "new" LMS format loads in less than 5 minutes, nice.

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