zak99b5
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Maybe it's a strategy to decrease the warm-up period.
Transmission slow to up-shift when engine cold?
- Thread starter Deadman
- Start date
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Interesting. Thanks for sharing. I was going to have the shop check the transmission fluid level to rule that out but it seems that may be a waste of money. Has anyone ruled that in or out?
This TSB seems to relate to what we are all describing -
ford.oemdtc.com
10R60/10R80/10R80 MHT Automatic Transmission - Harsh/Delayed Engagement And/Or Harsh/Delayed Shift - 2017-2023 Ford & Lincoln
2017-2020 F-150, 2018-2021 Expedition/Navigator/Mustang and 2019-2021 Ranger vehicles equipped with a 10R80 automatic transmission may exhibit a harsh engagement/harsh shift/delayed shift. It is possible the vehicle may also have an illuminated malfunction indicator lamp (MIL) or diagnostic...
ford.oemdtc.com
I spoke to a local Ford service advisor a few days ago regarding this TSB and he seemed to be familiar with it. He said that the step -This TSB seems to relate to what we are all describing -
10R60/10R80/10R80 MHT Automatic Transmission - Harsh/Delayed Engagement And/Or Harsh/Delayed Shift - 2017-2023 Ford & Lincoln
2017-2020 F-150, 2018-2021 Expedition/Navigator/Mustang and 2019-2021 Ranger vehicles equipped with a 10R80 automatic transmission may exhibit a harsh engagement/harsh shift/delayed shift. It is possible the vehicle may also have an illuminated malfunction indicator lamp (MIL) or diagnostic...
"2. Reprogram the transmission strategy download into the PCM/TCM strategy download into the PCM/TCM."
can actually introduce other odd behavior. He suggested that I first disconnect the battery overnight (this may be overkill but whatever). From what I understand this will reset the KAM where the transmission adaptive tables are stored. I went ahead and did this and it seems to have helped so far - two days in. I still see a slight delay when cold but it is definitely better. This may just be normal behavior at this point.
In regards to the second part of step #2 -
"Perform the adaptive learning drive cycle. Refer to Workshop Manual (WSM), Section 307-01"
He didn't mention that this was necessary. In any case it seems to make more sense for the adaptive learning to learn when the temps are cold where the odd shifting seems to happen.
I did ask him about checking the transmission fluid level and he indicated that if the level was truly low that I would be seeing a service engine light.
Anyway, thought I would pass that along.
Bad news for everyone who is experiencing this problem. I am at the Ford dealership. I have found out that this is an indication that the clutch packs in the transmission are worn\wearing out. The reason this problem clears up when the transmission warms up is because of part expansion. I was also told that folks are getting between 70,000 and 90,000 out of these 10 speed transmissions. I have 90,000 miles on mine. I guess I will be calling Ford today to see if they would be willing to help pay for a new transmission. Apparently they are putting better parts in the newer ones. 4-6 weeks to get a new one with a bill around $5,000. I am not happy and this is what I get for taking the risk of buying a Ford.
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Common issue with the 10R80 trans unfortunately. I dealt with the same issues. Remedy was a new trans from Ford. My issues and remedy are documented in the link below.
How to prove your fourth generation expedition tranny is slipping?
Hello again, fourth generation, friends, My tranny has 90,000 miles on it and was serviced at 60,000 miles and the fluid was in good shape. However, since then, I am increasingly noticing intermittent slips, especially on slow accelerations through fourth fifth and sixth gear. I have not had...
www.expeditionforum.com
Dice Roll
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Mine started doing this the next winter after we bought it. It arrived at the end of the winter and was fine until cold weather came back. I think it had like 5k miles when it started hammering from 3 to 4 and again going into 6th.
I posted in here and nobody seemed to have anything like that happening back then, about two years ago. I called the dealer and they said it’d be hard for them to speculate and there were no software updates that applied.
id read on here about the can of worms that is a tear down. I decided to just let sleeping dogs lie for now and bank in the extended ford warranty covering it if necessary at some point. I’m up to right at 20k miles now. Still does it, only first time through gears. I’ve only towed 2-3 times and the first time was well past the 1k break in period.
I posted in here and nobody seemed to have anything like that happening back then, about two years ago. I called the dealer and they said it’d be hard for them to speculate and there were no software updates that applied.
id read on here about the can of worms that is a tear down. I decided to just let sleeping dogs lie for now and bank in the extended ford warranty covering it if necessary at some point. I’m up to right at 20k miles now. Still does it, only first time through gears. I’ve only towed 2-3 times and the first time was well past the 1k break in period.
