What Causes the Obvious Gear Shift Jerk in Automatic Transmissions?

[DeCamille]

Automatic transmissions may exhibit noticeable shift jerks due to the following reasons: Transmission: Internal clutch pressure leakage in the transmission. Check for clutch damage and perform necessary repairs. Valve Body: The transmission oil passages are obstructed or not flowing smoothly. Wear and tear on the valve body, long intervals without transmission fluid changes leading to fluid degradation and reduced lubrication effectiveness, or a dirty transmission filter with poor filtration allowing wear particles to enter the valve body. Transmission Fluid: The transmission fluid level is not at the standard value. Verify whether the transmission fluid has been filled to the correct level, as both insufficient and excessive transmission fluid can cause this issue. For vehicles equipped with a transmission dipstick, check the fluid level against the standard markings while the engine is running.