3-4 Shift Flare
Cross-Country
Joined: Aug 2004
Posts: 80
Likes: 32
It might be gone right now but it will come back 3 to 4 FLARE .When I went to the dealer the first time they did a A break in routine . And They reset the TCM and learning tables . Was fine for a couple weeks now it's back. Also my truck is back at the dealer for a week now. I also called up Ford corporate
I just don't want to have a problem when the warrantees is up and then the transmission blows up on me .. That delay has to be doing something to the transmission! 2024 F250 6.7 HO 10r140 trans Around 4200 miles
I just don't want to have a problem when the warrantees is up and then the transmission blows up on me .. That delay has to be doing something to the transmission! 2024 F250 6.7 HO 10r140 trans Around 4200 miles
Cargo Master
Joined: Apr 2021
Posts: 2,022
Likes: 756
From: Texas
It might be gone right now but it will come back 3 to 4 FLARE .When I went to the dealer the first time they did a A break in routine . And They reset the TCM and learning tables . Was fine for a couple weeks now it's back. Also my truck is back at the dealer for a week now. I also called up Ford corporate
I just don't want to have a problem when the warrantees is up and then the transmission blows up on me .. That delay has to be doing something to the transmission! 2024 F250 6.7 HO 10r140 trans Around 4200 miles
I just don't want to have a problem when the warrantees is up and then the transmission blows up on me .. That delay has to be doing something to the transmission! 2024 F250 6.7 HO 10r140 trans Around 4200 miles
They threw every thibg at it
break in, vslve body
Cooler and new transmission
4 to 5 flare
Lost 9 10,
4wd Low
Joined: Nov 2024
Posts: 12
Likes: 4
Similar
I am experiencing a similar and inconsistent 3-4 shift. I’ll tell my dealer just so it is documented.
Currently waiting for my back ordered ac compressor.
lots of FUN with this generation.
Currently waiting for my back ordered ac compressor.
lots of FUN with this generation.
Last edited by jfam5; Jun 18, 2025 at 09:38 PM.
Cross-Country
Joined: Aug 2004
Posts: 80
Likes: 32
[QUOTE=robert sloane;21595933]go search my transmissions issues March 2025 under 1000 miles
They threw every thibg at it
break in, vslve body
Cooler and new transmission
4 to 5 flare
Lost 9 10,[/QUOTE
Is it the technicians or the product!
They threw every thibg at it
break in, vslve body
Cooler and new transmission
4 to 5 flare
Lost 9 10,[/QUOTE
Is it the technicians or the product!
Mountain Pass
Joined: May 2025
Posts: 187
Likes: 119
It's Ford's workshop manual. They constantly had new TSB's regarding what to do with the 10 speeds and have recently moved almost everything from the parts lists recommended in the TSB's(which had limited success) to the symptoms chart which is very vague.
Trending Topics
Laughing Gas
Joined: Jun 2023
Posts: 1,156
Likes: 648
From: McKinney, TX
My 2023 has had the 4th gear drop/surge since, literally, day one. Rather than a programming issue, I think it is more a mechanical issue. 4th gear is also where the torque converter locks up, on both the R140 and the R100, so there may be some mechanical hanky panky going on there.
FWIW, I took my 2023 in early on for the steering TSB, and mentioned the 4th gear slip, they supposedly rebuild the transmission valve body. I say supposedly... because I find no evidence that they opened the transmission up, and there are parts on the invoice that are suspiciously missing... like a pan gasket and new oil. My 2023 has 36000mi, now, and still does it, more or less, with predictable regularity, but I'm not seeing any other issues like some others have. I don't have any top-end clunks like some of you. That is not to say I'm not concerned... I fully expect this transmission to poop the bed, eventually. That's what extended warranties are for.
FWIW, I took my 2023 in early on for the steering TSB, and mentioned the 4th gear slip, they supposedly rebuild the transmission valve body. I say supposedly... because I find no evidence that they opened the transmission up, and there are parts on the invoice that are suspiciously missing... like a pan gasket and new oil. My 2023 has 36000mi, now, and still does it, more or less, with predictable regularity, but I'm not seeing any other issues like some others have. I don't have any top-end clunks like some of you. That is not to say I'm not concerned... I fully expect this transmission to poop the bed, eventually. That's what extended warranties are for.
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Cargo Master
Joined: Apr 2021
Posts: 2,022
Likes: 756
From: Texas
[QUOTE=sd ford;21595939]
product
When they removed cooler and valve body
It was full of stuff not normally associated with a working transmission
Metal bits, clutch materials
Ford finally conceded to replace it, vice sending it out to rebuild.
now it works fantastic
This is my 3rd truck with ten speed
Only one that lost its mind
When they removed cooler and valve body
It was full of stuff not normally associated with a working transmission
Metal bits, clutch materials
Ford finally conceded to replace it, vice sending it out to rebuild.
now it works fantastic
This is my 3rd truck with ten speed
Only one that lost its mind
Fleet Mechanic
Joined: Dec 2012
Posts: 1,567
Likes: 538
From: DFW
My 2023 has had the 4th gear drop/surge since, literally, day one. Rather than a programming issue, I think it is more a mechanical issue. 4th gear is also where the torque converter locks up, on both the R140 and the R100, so there may be some mechanical hanky panky going on there.
FWIW, I took my 2023 in early on for the steering TSB, and mentioned the 4th gear slip, they supposedly rebuild the transmission valve body. I say supposedly... because I find no evidence that they opened the transmission up, and there are parts on the invoice that are suspiciously missing... like a pan gasket and new oil. My 2023 has 36000mi, now, and still does it, more or less, with predictable regularity, but I'm not seeing any other issues like some others have. I don't have any top-end clunks like some of you. That is not to say I'm not concerned... I fully expect this transmission to poop the bed, eventually. That's what extended warranties are for.
FWIW, I took my 2023 in early on for the steering TSB, and mentioned the 4th gear slip, they supposedly rebuild the transmission valve body. I say supposedly... because I find no evidence that they opened the transmission up, and there are parts on the invoice that are suspiciously missing... like a pan gasket and new oil. My 2023 has 36000mi, now, and still does it, more or less, with predictable regularity, but I'm not seeing any other issues like some others have. I don't have any top-end clunks like some of you. That is not to say I'm not concerned... I fully expect this transmission to poop the bed, eventually. That's what extended warranties are for.
Laughing Gas
Joined: Feb 2020
Posts: 891
Likes: 565
From: End of the Rockies
https://nextgendiesel.com/collection...dy-upgrade-kit
I watched a video on this company. The owner used to be one of the engineers for the transmissions. What he said made a lot of sense about how they could have made the valve bodies work better.
They have not made anything yet for the 10R100 yet. They 10R140 and the 10R80 have some kits and rebuilds.
I watched a video on this company. The owner used to be one of the engineers for the transmissions. What he said made a lot of sense about how they could have made the valve bodies work better.
They have not made anything yet for the 10R100 yet. They 10R140 and the 10R80 have some kits and rebuilds.
Laughing Gas
Joined: Jun 2023
Posts: 1,156
Likes: 648
From: McKinney, TX
My sentiments exactly. I haven't had the steering TSB done yet, but I've mentioned to flare between 3 & 4 several times. I find it's less pronounced when I'm on the accelerator decently, more pronounced when I'm tip-toeing around rough back roads where it's difficult to get on it. Our county road is so terrible, it's all I can do to just get down it without rattling out my fillings. But when I hit the highway and am able to drive normally, the flare is less noticeable. And (it seems) after the truck is warm, the flare goes away altogether. It's always a strange/jarring/dead feeling when it happens though. It's happened since new and I've got nearly 50k miles now.
Cross-Country
Joined: Aug 2004
Posts: 80
Likes: 32
Starting in 2023 the transmissions didn't have the drain back problem. In 2020 to 2022 trans had a Drain back torque converter. I see you have a 2023 and a 2025 do they both have same Problem? Charlie 98
SSM 50260 - 2020-2022 F-Super Duty – 10R140 Automatic Transmission –
Delayed Engagement On Initial Start-Up
Some 2020-2022 F-Super Duty vehicles equipped with a 10R140 automatic transmission may
exhibit a delayed engagement into drive and/or reverse on initial start-up. The condition may occur
at times after sitting over night or for a couple of days. This may be due to the transmission fluid
draining back from the torque converter. This is a normal characteristic of the 10R140 transmission
and has no effect on durability, do not attempt to repair. Advise the customer to allow more time after
first engine start-up and before shifting into gear allowing time for the torque converter to refill.
SSM 50260 - 2020-2022 F-Super Duty – 10R140 Automatic Transmission –
Delayed Engagement On Initial Start-Up
Some 2020-2022 F-Super Duty vehicles equipped with a 10R140 automatic transmission may
exhibit a delayed engagement into drive and/or reverse on initial start-up. The condition may occur
at times after sitting over night or for a couple of days. This may be due to the transmission fluid
draining back from the torque converter. This is a normal characteristic of the 10R140 transmission
and has no effect on durability, do not attempt to repair. Advise the customer to allow more time after
first engine start-up and before shifting into gear allowing time for the torque converter to refill.