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Ford 10R80 Transmission: What to know about this transmission

Understanding the Ford 10R80 Transmission

The 10R80 Ford transmission is a ten-speed automatic transmission co-developed by Ford and General Motors. It is designed to provide seamless shifting and improved fuel efficiency in various Ford vehicles, including trucks, SUVs, and performance cars. The transmission features a wide gear ratio spread, which optimizes engine power and efficiency across different driving conditions, from city streets to highways.

Ford’s 10-speed transmission history

Ford and General Motors began collaborating on the project in the early 2010s, aiming to create a transmission offering more gears and better performance than existing models. The result was the 10R80, first introduced in 2017 in the Ford F-150 and has since been incorporated into a range of other vehicles powered by the 2.3L EcoBoost, 2.7L V6, 3.5L EcoBoost, 5.0L gas, and 3.0L Power Stroke Diesel engines in the following vehicles:

• 2017- Ford F-150
• 2018- Ford Mustang
• 2018- Ford Expedition
• 2018- Lincoln Navigator
• 2019- Ford Ranger
• 2019- Ford Everest

Ford 10R80 Transmission Components

This transmission is a 10-speed electronically controlled transmission which uses planetary gears. Gear selection is achieved by the electronic control of transmission fluid flow to operate various internal clutches.

It features ten forward speeds, one reverse speed, four planetary gear sets, a mechanical One-Way Clutch (OWC), six friction clutches, and both an upper and lower valve body equipped with eight solenoids.

This transmission includes:
• Torque converter with an integral converter clutch
• Electronic shift and pressure controls
• Four planetary gearsets
• Two multi-disc holding clutches
• Four multi-plate drive clutches
• One one way holding clutch
• Main control valve body unit

The transmission uses an innovative gear-set design that allows for a more significant number of gears within a smaller space, reducing weight and improving efficiency. Its electronic control system provides precise and responsive shifting, enhancing the driving experience. Additionally, the 10R80 features a high-efficiency torque converter and a lock-up clutch, which further contribute to its fuel-saving capabilities and smooth operation. These features and specifications make the 10R80 a standout choice for modern vehicles, offering performance, efficiency, and reliability.

The main control of the transmission features a valve body assembly equipped with solenoids and is managed by either a PCM or TCM, specifically for the 3.5L EcoBoost and 3.0L Power Stroke Diesel engines. This system governs the electrical components to enhance the engagement feel, shift experience, and shift scheduling.

Power from the engine is transmitted through a torque converter that includes an integral clutch. The transmission offers 10 forward gears and one reverse gear, achieved using four planetary gear sets.

This 10-speed automatic transmission is electronically controlled, featuring a main control valve body unit with eight solenoids and a torque converter. Gear selection is managed by regulating transmission fluid to engage various internal clutches. The PCM or TCM oversees the electrical components, controlling gear selection, shift pressure, and torque converter slip.

Operation

The 10R80 utilizes six linear force shift solenoids (A-F) that operate mechanically, meaning no transmission fluid flows through them. Instead, they use an armature/pin assembly to move a control valve within the main control valve body, regulating hydraulic fluid pressure. Each clutch (A-F) corresponds to its respective shift solenoid (A-F), with their operation being directly proportional—zero current results in zero pressure, while maximum current yields maximum pressure. In the event of a failure in the power circuit to the transmission solenoids, all solenoids will deactivate, preventing any clutch packs from engaging, with no fail-safe operation available.

Upshift Gear Sequence

The 10-speed transmission may skip gears when starting from a complete stop, which is normal and intended. During brisk acceleration at part throttle, single-step upshifts could lead to frequent shifts, resulting in brief times spent in each gear. In contrast, double-step upshifts allow for longer durations in gear.

At light throttle or under low load, single-step upshifts occur more frequently. The small gear steps of the 10-speed enable the engine to operate at lower speeds compared to a 6-speed transmission, optimizing fuel economy. Conversely, under heavy or full throttle, these small steps keep the engine closer to its horsepower peak for enhanced performance.

Downshift Gear Sequence

Similarly, the 10-speed transmission may skip gears when downshifting to a complete stop, which is also normal and desired. The skip shift strategy used in upshifting is applied during downshifting as well.

Drive Modes

For optimal shift quality, the Normal Drive Mode (D) is recommended. In Manual (M) mode or other selected Drive Modes, the transmission will deliver more aggressive shifts at higher engine speeds, which is also a normal and desired behavior.

Ford 10R80 Transmission Common Failures

Despite the initial excitement surrounding this advanced gearbox, drivers soon encountered significant issues as their vehicles racked up mileage.

• Rough and jerky gear changes
• Delayed acceleration known as “hesitation.”
• Sudden power loss at highway speeds due to complete transmission failure.

Ford has issued over half a dozen technical service bulletins addressing various defects in the 10R80, including faulty valve bodies, leaking gaskets, and defective torque converters.

Ford’s struggle to effectively resolve these issues, despite numerous software updates and part replacements, has led to a rise in legal claims. Recently, a series of new lawsuits filed in 2023 have put Ford in a challenging position regarding this transmission.

“Ford claims that “adaptive learning” in the transmission computer causes shifting problems that supposedly resolve over time. However, many owners report recurring problems even after software updates, part replacements, and repeated repairs under warranty. Vehicle buybacks exceed $47 million, confirming the scope of this issue.” — Gayle Law Group

For more information on the common failures of this transmission, see this post

©, 2024 Rick Muscoplat

Posted on by Rick Muscoplat

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