Possible causes of automatic transmission kicking when downshifting:
1. Low or contaminated transmission fluid
*Lack of fluid or contamination can cause poor lubrication and increased friction, resulting in kicking.
2. Faulty solenoid
* Solenoids control the flow of fluid in the transmission. A faulty solenoid can cause gears to shift in and out of gear abruptly.
3. Worn clutches or steel discs
* These components transmit torque. Their wear can lead to slippage and impact.
4. Problems with the valve body
* The valve body directs fluid to various transmission components. A dirty or faulty valve body can interfere with smooth gear shifting.
5. Faulty speed sensor
* An inaccurate signal from the speed sensor may cause the transmission ECU to select an incorrect gear.
6. Worn torque converter
* The torque converter transfers torque from the engine to the transmission. If it malfunctions, it can cause vibrations and shocks.
7. Transmission ECU software problems
* Bugs in the software may result in incorrect gear shifting.
8. Mechanical problems inside the transmission
*Serious mechanical problems such as broken gears or worn bearings can also cause kicking.
What to do:
* Check the level and condition of the transmission fluid.
* Diagnose the system using a trouble code scanner.
* Reprogram the transmission ECU if necessary.
*Consult a qualified transmission mechanic for further inspection and repair.