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Ford F-150 auto trans studder around 50mph why?

Possible causes of a Ford F-150 auto trans studder around 50mph:

1. Transmission fluid: Low transmission fluid or dirty transmission fluid can cause the transmission to slip and studder. Check the fluid level and condition and change the fluid if necessary.

2. Torque converter: A faulty torque converter can cause the transmission to studder. The torque converter is responsible for transmitting power from the engine to the transmission. If the torque converter is damaged or worn out, it can cause the transmission to slip and studder.

3. Faulty solenoid: A faulty solenoid can also cause the transmission to studder. Solenoids are responsible for controlling the flow of fluid in the transmission. If a solenoid is faulty, it can cause the transmission to shift erratically or studder.

4. Worn gears: Worn gears in the transmission can also cause the transmission to studder. Gears that are worn or damaged can cause the transmission to slip and studder.

5. Faulty sensors: Faulty sensors can also cause the transmission to studder. Sensors provide the transmission with information about the engine speed, vehicle speed, and transmission fluid pressure. If a sensor is faulty, it can cause the transmission to shift erratically or studder.