202x Ford MACH 1 with handling package, 9k miles, 10R80 transmission failed. Any real fixes yet to get 200k miles or more?

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Nov 11, 2020
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It is stock engine and transmission, and no tune!
My car is at the dealership now for the fourth time and I’ve also had an independent shop. The dealer it is at now is the only one that would replace any parts. They tried replacing the valve body, but they’re saying that there is internal transmission damage. They’re saying it’s due to excessive driving the cars all stock except for a few chassis/suspension parts. I find this is false advertising since the car comes with: Mich. Cup 2 track tire, Recaro racing seats, track and drag driving modes, 2 front splitters, rear spoiler with Gurney flap, heat exchanger for all the fluids, etc. and Ford marketed it as as a track car.
I get the impression the dealer is going to try to void my warranty!
I’ve been doing a lot of research on this transmission and I am seeing that there is a class action lawsuit about this transmission, but I haven’t seen any results yet so I assume it’s still ongoing?
It seems very odd to me that Ford and Chevy together making this transmission would think it’s a good idea to have steel gears running on aluminum along with one of the gears having bearings on one side, but not the other. It has other problems also that Ford has TSB‘s on and aftermarket people have come out with Upgraded parts for.
How much difference does the black anodized trashcan/clutch container/outer shell make in longevity vs non anodized and steel gears. I am thinking not enough to really mater in longevity?
List of failures:
When it comes to Ford 10R80 failure points, Dunsford describes three common problems and two lesser issues that may cause your Ford 10-speed to behave erratically and eventually fail.

CDF Drum. In earlier versions of the 10R80, a poorly designed bushing inside the CDF Drum slides out of position, allowing a Teflon seal to fail, resulting in pressure loss.

Outer Shell Problems. The 10R80’s outer shells are made of aluminum, which is softer than the steel used to make the transmission’s various clutches. Sometimes these clutches stick into the divots in the outer shell, causing weird shifts.

Valve Body. Valve bodies are what control the physical shifting in an automatic transmission. But if too much fine metallic contamination collects in the valve body, they behave out of spec. Which is why Dunsford always recommends replacing valve bodies anytime a 10R transmission is rebuilt.

Torque Converter Shudder. A problem that was much more common in Ford’s earlier six-speed (6R80) transmissions. Dunsford says it’s much less common in the 10R80 but can be an occasional issue.

Gear Driven Pump Noise. Sometimes the pump in charge of moving the automatic transmission’s hydraulic fluid makes noise. Again, this is a less common issue.




This guy does a number of videos on the Ford/Chevy 10 speed trans:


I really do love this car and I’ve spent a lot of money to protect it and upgrade it. I’ve a really nice aftermarket stereo in it full paint protective film full ceramic coating. I only use high-quality motor oil on it. I started using mobile one supercar 5W 50 but spending another $5.5k to $11,000 just for the transmission alone does not make me happy!
And on top of it again, are these upgrades/updates truly make the transmission last for 200,000+ miles or is it just make it last 1000 miles more?

Thank you for any of your wisdom on this car.
 
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I guess my question would be.

Did you track it. If so, did you do anything such as regular trans fluid changes and the like?

I don't much like the idea of an automatic on the track, but if you're going to do it, and on a regular basis, you should have to expect to up your maintenance game. Not that it would have saved you, there are some flaws with the 10R that are probably more apparent in the higher powered vehicles, but you can't just assume that just because Ford built a 'track' car that you don't have to do anything to actually make it survive on the track.
 
How long have you had the car, and how many miles are on it?

202x Ford MACH 1 with handling package, 9k miles, 10R80 transmission failed. Any real fixes yet to get 200k miles or more?​

I bought it in May with about 550 miles on it before I test drove it.
 

202x Ford MACH 1 with handling package, 9k miles, 10R80 transmission failed. Any real fixes yet to get 200k miles or more?​

I bought it in May with about 550 miles on it before I test drove it.
I would definitely speak to the manager about having it repaired / replaced under warranty. You having to spend over $5K+ to repair / replace the transmission is ridiculous. Especially with such low mileage, along with the fact you've only had it 6 months.

If the dealer doesn't give or offer you any satisfaction, it might be worth it to at least talk to an attorney familiar with this type of litigation. Especially when you could be looking at a 5 digit repair / replacement cost.
 
He still hasn't answered the track question.

Number 1 rule of track days, of any kind. If you can't afford to replace parts, or write off the whole car, don't do the activity.

If you want to track it, have the transmission built for track use, throwing OEM parts at it is just going to be repeated headaches.

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It is stock engine and transmission, and no tune!
My car is at the dealership now for the fourth time and I’ve also had an independent shop. The dealer it is at now is the only one that would replace any parts. They tried replacing the valve body, but they’re saying that there is internal transmission damage. They’re saying it’s due to excessive driving the cars all stock except for a few chassis/suspension parts. I find this is false advertising since the car comes with: Mich. Cup 2 track tire, Recaro racing seats, track and drag driving modes, 2 front splitters, rear spoiler with Gurney flap, heat exchanger for all the fluids, etc. and Ford marketed it as as a track car.
I get the impression the dealer is going to try to void my warranty!
I’ve been doing a lot of research on this transmission and I am seeing that there is a class action lawsuit about this transmission, but I haven’t seen any results yet so I assume it’s still ongoing?
It seems very odd to me that Ford and Chevy together making this transmission would think it’s a good idea to have steel gears running on aluminum along with one of the gears having bearings on one side, but not the other. It has other problems also that Ford has TSB‘s on and aftermarket people have come out with Upgraded parts for.
How much difference does the black anodized trashcan/clutch container/outer shell make in longevity vs non anodized and steel gears. I am thinking not enough to really mater in longevity?
List of failures:
When it comes to Ford 10R80 failure points, Dunsford describes three common problems and two lesser issues that may cause your Ford 10-speed to behave erratically and eventually fail.

CDF Drum. In earlier versions of the 10R80, a poorly designed bushing inside the CDF Drum slides out of position, allowing a Teflon seal to fail, resulting in pressure loss.

Outer Shell Problems. The 10R80’s outer shells are made of aluminum, which is softer than the steel used to make the transmission’s various clutches. Sometimes these clutches stick into the divots in the outer shell, causing weird shifts.

Valve Body. Valve bodies are what control the physical shifting in an automatic transmission. But if too much fine metallic contamination collects in the valve body, they behave out of spec. Which is why Dunsford always recommends replacing valve bodies anytime a 10R transmission is rebuilt.

Torque Converter Shudder. A problem that was much more common in Ford’s earlier six-speed (6R80) transmissions. Dunsford says it’s much less common in the 10R80 but can be an occasional issue.

Gear Driven Pump Noise. Sometimes the pump in charge of moving the automatic transmission’s hydraulic fluid makes noise. Again, this is a less common issue.




This guy does a number of videos on the Ford/Chevy 10 speed trans:


I really do love this car and I’ve spent a lot of money to protect it and upgrade it. I’ve a really nice aftermarket stereo in it full paint protective film full ceramic coating. I only use high-quality motor oil on it. I started using mobile one supercar 5W 50 but spending another $5.5k to $11,000 just for the transmission alone does not make me happy!
And on top of it again, are these upgrades/updates truly make the transmission last for 200,000+ miles or is it just make it last 1000 miles more?

Thank you for any of your wisdom on this car.

Where is this transmission made? The only reason I ask this is due to the issue that had manual transmission owners irritated a few years ago. The gt350/350r had its transmission built in the USA. For the regular GT mustang Ford had the transmission build by Getrag I think but in Guangzhou China. Apparently after Ford Executives left someone at the plant in Guangzhou sourced cheaper parts behind Fords back namely throw out bearings and shift forks. Is there a beefier rebuild kit or different version of the 10 speed that can go in your Mustang?
 
The transmissions can be pretty good 'if' you get a good one. A nearby dealer should cover the problem. If not, lawyer up. A replacement trans is pushing $10K for some Ford vehicles.

I know you mentioned mods. That's always a red flag as you know they will use any excuse. You may want to find another dealer that will be a bit more accepting of your car. If you use aftermarket rims, and still have the stock ones, put them on when you go back.

What's the OCI on that car? If it's 10,000 miles, You could always claim that the transmission failed before the first scheduled oil change.

It is infuriating when dealerships and insurance companies don't uphold their end of the agreements. I've recently found myself way behind here and am also using a lawyer.
 
2020 GT with PP1 package and 10R80 transmission.
30K miles and zero problems.
Car has seen 155 mph (limited) about 7 times and still buttery smooth shifting.
ATF temp was 211 F and quickly dropped to 195 F.

That doesn’t mean it won’t have problems in the future….
 
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He still hasn't answered the track question.
Maybe he has. Listed the OEM performance parts and his suspension mods. If not track sessions maybe "spirited" driving on the street? Either way, hammering on a known sketchy transmission might not be the best plan. Hope he gets it fixed and does whatever mods necessary for it to survive his preferred use.

Is the racing disclaimer in the Mustang OM or every Ford OM?
 
Would this fit, be a great fix/upgrade: The 10R140 is the largest 10R family member and was originally rated to 1,050 ft.-lbs. of peak torque in the 2020+ Super Duty. This has presumably been revised for 2023, as Ford debuted the 6.7L High Output PowerStroke, which makes 1,200 ft.-lbs. of peak torque. The 10R140 is currently exclusive to Ford Super Duty trucks.
 
(In the 10R80, planetary gear sets and the one-way clutch are vital for maintaining smooth gear shifts and appropriate gear ratios. Deficiencies in these components can lead to improper shifting or transmission failures. A faulty one-way clutch might cause skipping of gears or failure to hold power in specific gears.

Friction clutches also play a role in this system, and their wear can exacerbate these issues. Keeping an eye on gear shifting behavior can alert you to early signs of these problems. Repairing or replacing these components early can prevent costly overhauls. From: https://cartipsdaily.com/10r80-transmission-problems )
 
Would this fit, be a great fix/upgrade: The 10R140 is the largest 10R family member and was originally rated to 1,050 ft.-lbs. of peak torque in the 2020+ Super Duty. This has presumably been revised for 2023, as Ford debuted the 6.7L High Output PowerStroke, which makes 1,200 ft.-lbs. of peak torque. The 10R140 is currently exclusive to Ford Super Duty trucks.
Will not physically fit, they are huge and have more problems than the Mustang ones.
 
Also on the newer connected vehicles, OASIS will show the dealer lots of vehicle information remotely including any code sets, clearing codes, key cycles since code reset, etc. We have denied warranty claims at my dealer by pulling that info up and seeing where someone went in with ForScan and changed options on their vehicle and bricked the PCM and BCM.
 
I would go aftermarket, there are builders out there now that have these transmissions right.
 
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