Possible causes of automatic transmission jerking:
1. Low transmission fluid level:
* Insufficient fluid levels result in poor lubrication and increased friction between transmission components.
2. Contaminated transmission fluid:
*Old or contaminated fluid contains abrasive particles that can damage transmission components and cause jerking.
3. Faulty solenoids:
* Solenoids control the flow of fluid in the transmission. Faulty solenoids can result in rough shifting and jerking.
4. Problems with friction clutches:
* Friction clutches are responsible for transferring power between shafts in a gearbox. Worn or damaged clutches can cause slipping and jerking.
5. Problems with the torque converter:
* The torque converter transfers power from the engine to the transmission. Problems with the torque converter, such as leaks or wear, can cause jerking.
6. Electrical faults:
* Problems with wiring, sensors, or the electronic control unit (ECU) can affect transmission performance and cause jerking.
7. Worn bearings or gears:
* Worn bearings or gears can cause increased play or damage, causing jerking and noise.
8. Incorrect throttle cable adjustment:
* Incorrect throttle cable adjustment can affect transmission performance and cause jerking, especially when downshifting.
9. Pump motor malfunction:
* The pump motor is responsible for circulating the transmission fluid. A faulty pump motor can lead to low pressure in the system and jerking.
10. Problems with drive shafts:
*Worn or damaged drive shafts can cause vibration and jerking when transmitting power to the wheels.