Possible reasons why the automatic transmission kicks when changing gears:
1. Low transmission fluid level:
* Insufficient fluid can cause clutch slippage and knocking.
2. Contaminated transmission fluid:
*Dirty fluid contains particles that can interfere with smooth shifting.
3. Faulty solenoids:
* Solenoids control fluid flow and malfunctioning solenoids can result in incorrect gear shifting.
4. Worn clutches:
*Clutch clutches can wear out over time, causing slipping and slamming.
5. Worn torque converter:
* The torque converter converts engine torque into motion, and wear can cause vibration and shock.
6. Faulty speed sensor:
* The speed sensor tells the automatic transmission about the speed of rotation of the input shaft, and its malfunction can lead to incorrect gear shifting.
7. Faulty electronic control unit (ECU):
* The ECU controls the operation of the automatic transmission, and its malfunction can cause various problems with gear shifting.
8. Wiring problems:
* Damaged or corroded wiring may interfere with the operation of solenoids and sensors.
9. Mechanical failure:
* Internal mechanical components of the automatic transmission, such as gears and bearings, can become worn or damaged, causing shock when shifting gears.
10. Incorrect use:
*Sharp acceleration or deceleration, or towing heavy loads can place excessive stress on the automatic transmission and cause shock.