Don't Get Burned: Avoid the Ford Super Duty 10R140 Transmission

[@floridaguardian8264]

I feel your pain, bro. I’m missing the day of work today to get my transmission checked after it got rebuilt less than 1000 miles ago.

[@BocksGarage]

That’s crazy. Let me know what they find.

[@floridaguardian8264]

@ they flashed the transmission and in other words, think I’m crazy because of course the transmission decided to run strong at that time, but every so often it jerks when you turn it on slams into gears and slips, both shifting and downshifting in certain gears. I still have 11,000 miles on the warranty. I feel your pain though I’ve saved so much for so long to get my dream truck and now I’ve had to drop all this cash getting it rebuild for it only to start acting up again. I’m so pissed off at Ford.

[@petermaloney8623]

We got a 2024 king ranch a couple months ago. Needed a new transmission at 10,000 miles. 500 miles after that it’s back in the shop with more problems with the drivetrain. Now the truck seems to be slightly slipping between 3-4th gear but the dealer “can’t replicate” the problem.

[@BocksGarage]

That’s wild, you would think they'd be able to figure it out by now. Is that truck a gasser or a diesel? It’s been less than 15,000 miles since my new trans, and I feel like I’m starting to notice some signs of declining health already.

[@geoffreybaldwin9808]

I just purchased a used 2021 F-350 with the 6.7 and the 10 speed with 65,000 miles. When I test drove it, it was not slamming into gear but it was downshifting weird when I slowed to a stop at a light. The dealer told me they needed to service it before they sold it to me and they would look at it, so I went through with the purchase. When I picked it up after I purchased it they said they did a relearn on the transmission and everything was good, it started to slam into 1st gear when I put it into drive when I left the dealership. I thought it was part of the relearn process. After day 3 of it doing that I made an appointment at the dealer I purchased it from for them to look at the transmission again. They have had it for 3 weeks at this point and still haven't given me a straight answer on what exactly is wrong with the truck. It is a Gold certified truck so everything is covered but still sucks that I've made the first payment on it and have only been able to drive it for less than a week. The only loaner vehicle they had at the time was an f-150 with a 5-1/2ft bed (I bought an f-350 for a reason). So yes BUYER BEWARE. I love the truck and the amazing power it makes and the way it looks but the dealership/ownership experience so far has been absolutely horrible.

[@BocksGarage]

Damn man, I’m sorry to hear about all of that. It’s been a few days now, have any updates?

[@Precisiontigwelding]

In 2022 they redesigned the cdf drum. After 2022 it’s been fixed. It should have been a recall

[@BocksGarage]

@@Precisiontigwelding I’m happy to hear that it was fixed going forward. Do you know what the fix actually was? Some sort of retainer or a better press fit I would guess.

[@robertmills794]

I have a 2021 6.7l with what I think is the same transmission. it's in for service today, but it's been holding together pretty well. I have noticed some odd shifting at times when it's cold. When I bought the truck I bought the 100K mile warranty that cover it bumper-2-bumper,.. so I figure it'll be covered until then.

[@BocksGarage]

It may be worth getting the fluid checked before the truck hits 100k miles, just to make sure there’s no hidden surprises in there.

[@machaf]

Not the same tranny. He has a gaser which is 10R80, you have 6.7L diesel which is 10R140. Looks like there was a class action lawsuit over this issue.

[@donedoneit1355]

They did in fact do a repair replacing the Main Control Valve Body with an updated one (LC3Z-7A100-F) on the 2024 and the incident rate of issues has really dropped...Ford's problems will increase in 2025 when they make the 10R140 gets replaced with the much lighter duty 10R080 and 10R100 in their Super Duty. I hope they get you fixed up.

[@BocksGarage]

@@donedoneit1355 They ended up helping me out some and the truck is back in service. I was still a few grand out of pocket, but they helped some which was nice. In a side note, are they really looking to swap out to the same trans that’s in the F-150s?

[@donedoneit1355]

@@BocksGarage If you buy the 2025 F250 and not the F350 or TREMOR...you'll not get the 10R140...but the 10R100 instead. That was a push to get a higher mpg as it's a lighter transmission. The new Lariat doesn't come with leather interior anymore either, ActiveX...(and it has a distinct "odor")...no power tilt steering either and a few other reductions in options but, they raised the price though....LOL...

[@lashbera]

Ford had the virtually indestructible 6 speed in their super duty trucks but then teamed up with GM to share the new 10 speed. Any involvement with gm on transmissions made me afraid to upgrade my 2017, so, I’m keeping my current truck.

[@BocksGarage]

@@lashbera Apparently there’s a fix now with the 10 speeds, but I’m not super familiar with it. I do have a soft spot for the 17-19 Superdutys though.

[@bjw8586]

Ford just replaced my 2021 f350 10r140 transmission with 53,000 miles on it. It’s weird cause I read on google that the average life span of this transmission is 100-120k miles but we’re only getting half that.

[@BocksGarage]

Was that with the 7.3 or a 6.7? And low 100k is a bad expectation for a trans to last. I would fully expect one to go til 200k atleast.

[@bjw8586]

It has the 6.2,

[@alouisschafer7212]

Not even surprised. Everybody makes garbage on 4 wheels these days. Cars and trucks peaked in the 90s and 2000s.

[@BocksGarage]

Everything really is junk nowadays. Just have to pick the junk you want to deal with sadly.

[@joshualake4882]

I was just on autotrader the other day and seen a 2022 f350 i believe the 6.7 but not sure. Asking price was 68k and it had less than 20k miles and lariat trim level. I thought it was a good deal till i read the carfax and it said it had an R title for being a lemon and returned to ford for having "harsh transmission shifts" and ford apparently fixed it and now for sale but still leery

[@BocksGarage]

If the truck didn’t have the entire trans replaced as well as some sort of extended warranty, I’d stay far, far away.

[@anthonymiller6696]

just to clarify this was only a issue on the gassers, and was also fixed i believe mid 2022. if you complain enough ford usually covers all of it.

[@BocksGarage]

This isn’t happening on 6.7s? I thought there was only minor changes on the transmissions between the two engine styles. As for the replacement trans I had installed, my Ford rep doesn’t believe it’s an updated trans, so it’s likely prone to the same issues.

[@trucksucc8490]

@@BocksGarageFords 10 speeds have issues with knowing what gear to shift into, my coworkers all have 10 speed 6.7s that shift at the weirdest times. I know it’s kind of an issue with the 6.7, I can imagine having a gas engine would make that even worse. When did you get your transmission fluid done? I know they recommend 45k, but honestly we have been doing them every 30k just to be safe.

[@BocksGarage]

Yeah, it’s definitely a widespread issue. Since having the trans replaced it’s been night and day. Even way before it failed, it apparently was never right, or just not right for a long time. As for trans fluid replacement, the manual claims a service life of 150k miles, so I had never replaced mine.

[@Fishinandfarmin_tv]

@@BocksGarage the 10R100 which comes with the gassers in the super duty lineup i think got fixed mid 2022 but the 10R140 which is paired up with the 6.7l Powerstroke didn't get fixed until the 2023- model year (2020-2022 had major transmission issues)

[@Fishinandfarmin_tv]

@@trucksucc8490 the 10R140 which comes with the 6.7 on my uncles truck didnt have the confusion problem, it had the actually blown up issue

[@Fishinandfarmin_tv]

my uncle has a 2022 F250 STX with the 6.7l Powerstroke paired up with the 10R140 10 speed automatic transmission that blew at 7k miles

[@BocksGarage]

Jeez. Hopefully it’s been trouble free since then.

[@Fishinandfarmin_tv]

@@BocksGarage it has so far

[@lukebrwntube]

So did you get it for $7k or $3k? I was slightly confused. Also, did they put in another ‘21 model trans or a current year one? How’s it been performing since the work was done? My 2020 does the lurch when you put it into gear but that’s the only symptom currently and it only has 36k on it.

[@BocksGarage]

@@lukebrwntube Keep an eye on it to get worse. And the original quote was $10,300 to have it replaced. Ford worked with me and gave me $7,000 towards it, so I ended up paying $3,300 plus taxes. Sorry for the confusion.

[@lukebrwntube]

@ No worries! That’s definitely a nice price break, good to know so if something comes up with mine (that’s also no outside of warranty) I will lean into them. So did they put a newer year unit in yours?

[@BocksGarage]

@ It’s definitely a nice help, but I think they did it because it really shouldn’t have failed when it did. As for the replacement trans, I sadly believe it’s an identical replacement.

[@lukebrwntube]

@ I definitely agree and think this should have been a recall, or a customer satisfaction program like the DPF’s on certain years of the 6.7. That’s also a bummer it’s an identical unit they put in. Is it working well now though?

[@BocksGarage]

@ It really should have been. It put a bad taste into the mouth of a lot of people. As for the replacement, it’s working well now but once in a while I get a weird shift and I question if it’s starting to go out. At this point, it doesn’t matter. It came with a 2 year unlimited mile warranty, so I’ll re-evaluate it once I get closer to the end of that period.

[@rawkfist-ih6nk]

I’m not trying to be mean or condescending but is the digital dash display factory? Looks like something mid 2000s or a decent arduino dashboard but kinda dated for a 2021

[@BocksGarage]

Yeah, all stock 2021 Lariat dash board. It’s pretty simple, but doesn’t flicker in person. That has something to do with the camera and the LED displays.

[@AustinTA-cd9rs]

For the price of trucks / cars nowadays it should be 8 year - 100k mile warranty bumper to bumper. BS it’s only 60K miles.

[@BocksGarage]

I completely agree, especially with the price jumps since Covid hit, which ironically came at the same time as quality fell. Only way you’re getting a 100k miles on a standard warranty is with a diesel, and that’s an easy $12k up charge.

[@AustinTA-cd9rs]

@@BocksGarage I’m not worried about the power train. I’m worried about all the electronics and cheap microchips in everything that will fail after 2-3 years. That’s why we need longer warranty. It’s the only way to hold the automakers accountable for what they’re producing. Most people need 72-84 months to pay the car off. Warranty should be for as long as the loan period so people aren’t fucked with repair bills while still paying off the car.

[@lashbera]

It’s a GM built transmission, ford built great transmissions

[@EasyFinancialFreedom]

Ford transmissions were junk. Think AOD.

[@lashbera]

@ WOW, I guess if your going back 40 years we can find a lot of garbage built by all companies in that time

[@thecookiedude85]

Said it once and twice. Ford makes powerful engines but their transmissions suck ass…

[@BocksGarage]

I feel like the 6 speeds in the early alumidutys were pretty solid, but I could be wrong.

[@thecookiedude85]

@@BocksGarage I had a 2000 f250 and the transmission was solid but my reverse gear went out.

[@Fishinandfarmin_tv]

@@BocksGarage i like the 6 speed in my 2012 f250 6.7

[@robertmills794]

The C4 and the C6 were great,.. still are if you can suffer a 3 speed auto.

[@Fishinandfarmin_tv]

@@robertmills794 are you talking about corvettes? Because the rest of us are talking about 2020-2022 ford super duty trucks