Possible reasons:
Transmission problems:
* Wear of automatic transmission solenoids
*Low transmission fluid level
* Transmission fluid contamination
* Torque converter problems
Engine problems:
* Malfunction of MAF (mass air flow) sensor
* Oxygen sensor malfunction
*Misfire
* Problems with the fuel system
Electrical problems:
* Malfunction of the electronic transmission control unit (ETCU)
* Short circuit or break in electrical wiring
Other possible reasons:
* Tire wear or deformation
* Engine management system malfunction
* Broken engine or transmission mount
Diagnosis and elimination:
1. Check transmission fluid level: Check the fluid level for low levels or contamination.
2. ECU Diagnosis: Use the diagnostic scan tool to check transmission or engine related trouble codes.
3. Sensor check: Check that the MAF and oxygen sensors are operating correctly.
4. Check Spark Plugs and Coils: Check the spark plugs for signs of misfire.
5. Inspect electrical wiring: Visually inspect electrical wiring for damage or breaks.
6. Engine Management System Check: Use a diagnostic scan tool to check engine management system parameters.
7. Tire Inspection: Inspect the tires for wear or deformation that may cause vibration.
8. Checking the fastenings: Make sure the engine and transmission are securely fastened.
If you cannot determine the cause of the jerking yourself, contact a qualified mechanic for professional diagnosis and repair.