Possible causes of kicking when accelerating in a car with automatic transmission:
1. Low level or contamination of transmission fluid:
* Insufficient or contaminated fluid causes insufficient pressure and clutch slipping.
2. Worn or damaged friction discs:
* Worn friction discs lead to slippage and kicking when shifting gears.
3. Faulty solenoids or valves:
* Solenoids and valves control the flow of fluid in the transmission. Their malfunction can lead to incorrect pressure distribution and kicking.
4. Problems with the torque converter:
* A malfunction of the torque converter, which transfers torque from the engine to the transmission, can cause jerking or jerking.
5. Software errors:
* The automatic transmission is controlled by an electronic control module (ECU). Software errors in the ECU can disrupt the operation of the transmission and cause kicks.
6. Drive shaft wear:
* Worn or damaged drive shafts may cause vibration and shock when accelerating.
7. Sensor malfunctions:
* Faulty sensors, such as the speed sensor or throttle position sensor, can provide incorrect information to the ECU, causing the transmission to shift incorrectly.
8. Electrical problems:
* Faults in the electrical wiring or transmission control unit can disrupt the operation of the automatic transmission and cause kicking.
9. Engine malfunction:
* Engine problems such as poor compression or a faulty ignition system can affect the smooth operation of the automatic transmission.
Diagnostics and repair:
* Check the level and condition of the transmission fluid.
* Carry out troubleshooting to check for error codes.
* Inspect friction discs, solenoids and valves for wear or damage.
* Check the functionality of the torque converter.
*Update the ECU software as needed.
* Inspect the drive shafts and replace them if necessary.
* Diagnose faulty sensors and replace them.
* Eliminate faults in the electrical system.
* Make sure the engine is in good condition.