Ford 10 Speed Intro


August 10, 2026

The next few blogs will have some insights on the Ford 10 Speed automatic transmission (10R80 & 10R140). This transmission is installed in many vehicles, from Ranger, F150’s, Expedition, Bronco, Mustang and Ford Super Duty trucks.


These transmissions have some design issues that have caused some serious problems. I’m going to touch on these in the next few blogs. The range of years from this transmission is from 2017 up to the mid 2020’s.

Transmission image showing issue with hole being blocked | Boeser Automotive

Some of the complaints have been erratic shifting. When this transmission shifts into 4th gear is the most common complaint that I have seen. This is caused by a C.D.F drum that has a part move inside of it and blocks a hole. This hole allows fluid to flow into the clutch assembly for that gear. When it is blocked, it has a very harsh and unstable shift.


Talk to us about how this can be repaired and the transmission does NOT need to be replaced.


Tom

September 11, 2026
This 4th valve in the serial valves. Shows very excessive wear. Hydraulic pressure is almost nonexistent inside the transmission. This is usually the case when somebody drives the vehicle until it doesn’t move anymore.
September 10, 2026
Looking at this 3rd valve in a series of valves. We find that the wear is starting to get a little more excessive. We are starting to experience a larger pressure loss in many aspects of the transmission.
September 9, 2026
The second valve illustrates slight wear on the pressure regulator valve causing low line pressure. At this stage of the game, you’re starting to feel a shudder when applying.
September 8, 2026
I’m going to touch base on the most common problem that I see with this transmission. It is a worn pressure regulator valve. This valves in the pump and the transmission needs to be removed for access.
August 12, 2026
It is not uncommon for repair facilities, especially dealerships, to suggest replacing the transmission. Experiences. We have done more repairs on these than replacements.
August 11, 2026
Another issue is the sleeve moving inside the drum. It will allow the sealing ring on this hub to get forced out of the groove.
August 7, 2026
We encourage you to have some phone conversations with an independent shop to see what makes you feel comfortable.
August 6, 2026
What we want to do is make an honest inspection that shows the proper heading that fits the vehicle's needs.
August 5, 2026
These inspections may point out critical areas that need attention right away and/or potential future items that need attention.
August 4, 2026
We hope our repair facility meets your needs. I look forward to continuing to blog about what we do here and share insights into the auto repair field.