Possible reasons for the automatic transmission jerking during acceleration:
Mechanical:
* Wear of friction discs
* Torque converter malfunction
*Transmission fluid leak
* Oil filter clogged
*Damage to planetary gear
Electronic:
* Faulty sensors (speed sensor, throttle position sensor)
* Malfunction of the transmission control unit
*Wiring problems
Other:
* Poor quality transmission fluid
* Insufficient transmission fluid level
* Worn engine or transmission mounts
Troubleshooting steps:
1. Check the level and condition of the transmission fluid. If the level is low, add fluid to the recommended level. If the fluid is brown or smells burnt, it should be replaced.
2. Check for transmission fluid leaks. Inspect the vehicle for any signs of leaks underneath.
3. Scan the vehicle for trouble codes. This may help identify electronic problems.
4. Clean the transmission oil filter. A clogged filter can cause insufficient oil pressure, which can cause jerking.
5. Check the speed and throttle position sensors. Faulty sensors can send incorrect information to the transmission control module, causing the transmission to malfunction.
6. Check the transmission control unit. The control unit may need to be reprogrammed or replaced.
7. Check engine and transmission mounts. Worn mounts can allow the engine or transmission to move, which can cause jerking.
Note: Trying to fix automatic transmission problems yourself is not recommended. Contact an authorized service center or qualified mechanic for professional diagnosis and repair.