10R140 failure

PSD-BLACK-CLOUD · Jul 2, 2024

Have any of yall had one fail yet? From what i see online its pretty common. But not seeing anything here on it. I'm thinking the valve body failed or whatever grabs the next gear went out. Temps don't get high and once its in gear it stays but the shifts are pretty rough with it trying to find the next gear. 5-8 is where the problem is all the other gears shift as they should. If its not covered under warranty it will be getting a suncoast or something equal to that. Any reviews on aftermarket 10 speeds by anyone yet?

ncollins64 · Jul 2, 2024

I haven’t seen any failures yet, we have several 550s that are hooked to heavy trailers daily and not one failure, all ranging from 21-23 models. I’d be curious to know who’s building these 10 speeds.

PSD-BLACK-CLOUD · Jul 2, 2024

Mine tows a lot but i don't beat on it because i make my living out of it. It only has 38k miles.

ToMang07 · Jul 2, 2024

Haven't seen many since the recall went out. IIRC they initially had issues with a bushing or bearing, I can't remember. Mine has just south of 35k, plowed with, towed ~14Kish between 5th wheel toyhauler and tractor, and otherwise abused rolling on 37s. I'm very happy with it so far, but Charles should be on soon to let you know how much he loves his, lol

Powerstroke214 · Sep 11, 2024

I think Maryland Performance and Randy's Transmissions are building them. I have a buddy that was getting a MPD(Or MPP?) one but may have canceled as he's planning on selling the truck.

PSD-BLACK-CLOUD · Mar 10, 2025

Update shortly after this post I put a new style valve body in it and programmed it to the truck. Fluid was nasty but no metal or anything. Truck is at 62k now and doing ok.

J98 · Mar 10, 2025

PSD-BLACK-CLOUD said:
Update shortly after this post I put a new style valve body in it and programmed it to the truck. Fluid was nasty but no metal or anything. Truck is at 62k now and doing ok.

Cut any Ford-recommended 10 speed fluid change interval in half. The GM's recommend 45-50k on their 10L1000, Ford magically gets 100k out of the 10R140.

They recommend 150k on the F150, absolute joke.

ToMang07 · Mar 10, 2025

I have my 50k service coming up soon, getting the tranny flushed is definitely on the docket. Both because it's under warranty... and the dipshits at ford deleted the dipstick/fill tube. -.-

PSD-BLACK-CLOUD · Mar 13, 2025

ToMang07 said:
I have my 50k service coming up soon, getting the tranny flushed is definitely on the docket. Both because it's under warranty... and the dipshits at ford deleted the dipstick/fill tube. -.-

Just my opinion but i wouldn’t do a flush. Just change the fluid/filter. Every time i have done a flush i lost the trans shortly after.

ToMang07 · Mar 15, 2025

PSD-BLACK-CLOUD said:
Just my opinion but i wouldn’t do a flush. Just change the fluid/filter. Every time i have done a flush i lost the trans shortly after.

Well, it's under warranty and will be done a the Stealership, so if they fry it, all the better. If I were doing it myself, I'd just drop the pan and do it that way.

PSD-BLACK-CLOUD · May 6, 2025

Well just an update. It died. Will be getting an upgraded aftermarket one installed. Made it just out of warranty.

Sterling6.7 · May 6, 2025

That sucks. What are you going back with?

PSD-BLACK-CLOUD · May 9, 2025

There is not a lot of options for them. I'm going with a place called AusTex. The shop that fixes our work trucks recommended a stage two from them.

PSD-BLACK-CLOUD · Jun 24, 2025

Well i got truck truck back yesterday. I was very happy with how everything shifted and how the truck ran. I had them do a mishimoto trans cooler and it came with a bigger pan. Trans temps sit at 170-184 now like they should. When the truck was new and stock it was 200+ everyday.

PSD-BLACK-CLOUD · Sep 10, 2025

Another update. I broke it again. Trucks has been in the shop for a good bit with trying to figure out what gave. I get it back this week. We shall see how it goes.

Sterling6.7 · Sep 10, 2025

That sucks, I hope they figure it out.

Marsh Pirate · Sep 23, 2025

Mine's at the dealership now for the second time within a month. The transmission was shifting so hard it was scary! Let's see what they try this time. 41,000 miles!

PSD-BLACK-CLOUD · Oct 10, 2025

Well it’s back. Put 5k hellish miles on it and it’s holding. Tq converter was the issue. It’s liking the suncoast one in it now.

PSD-BLACK-CLOUD · Oct 10, 2025

Marsh Pirate said:
Mine's at the dealership now for the second time within a month. The transmission was shifting so hard it was scary! Let's see what they try this time. 41,000 miles!

Good luck. Mine was in and out till the warranty expired then it was on me. Cost me 14k. All the new trucks I’m buying won’t be fords.