Possible reasons for the automatic transmission jerking when driving:
1. Malfunction of solenoids:
* Control gear shifting
* Worn or faulty solenoids can cause harsh shifting or slipping
2. Torque converter malfunctions:
* Connects the engine to the transmission
* Lockup problems or torque converter slippage may cause jerking
3. Low transmission fluid level:
* Provides lubrication and hydraulic pressure
* Insufficient fluid level can lead to slippage or overheating
4. Contaminated transmission fluid:
* Over time becomes contaminated with particles and sediments
*Contaminated fluid may reduce the efficiency of the hydraulic system
5. Worn clutches:
* Provide traction between transmission components
* Worn clutches can slip, causing jerking
6. Faulty speed sensor:
*Provides information to the transmission control unit
*A faulty sensor may cause incorrect gear shifting
7. Electrical problems:
* Wiring faults or faulty electrical components
* May interfere with normal transmission operation
8. Problems with the transmission control module (TCM):
* Controls the transmission
*A faulty TCM can cause various shifting problems
Troubleshooting Suggestions:
* Check the level and condition of the transmission fluid
* Replace contaminated fluid
* Diagnose solenoids and torque converter
* Check speed sensor and electrical components
* If necessary, replace worn clutches
* Reset TCM according to manufacturer’s recommendations
*Consider calling a qualified mechanic for additional diagnosis and repairs.