Possible reasons for automatic transmission jerking during acceleration:
1. Lack of transmission fluid:
* Low fluid levels result in insufficient lubrication and pressure in the system.
2. Contaminated transmission fluid:
* Contaminants and metal shavings can clog hydraulic passages and valves, preventing smooth shifting.
3. Damaged or worn solenoid:
* Solenoids control fluid flow and gear shifting. Their malfunction can cause jerking.
4. Problems with the valve body:
* The valve body contains hydraulic valves that control fluid flow. Damaged or worn valves can cause jerking.
5. Worn friction discs:
* Friction discs in clutch packs transfer power from the engine to the transmission. Excessive wear can cause slipping or jerking.
6. Faulty speed sensor:
* A faulty speed sensor may send incorrect data to the transmission control module, resulting in incorrect shifts.
7. Electrical wiring problems:
* Damaged wiring can cut off power to solenoids or sensors, causing jerking.
8. Worn or damaged gears:
* Worn or damaged gears can cause noise and jerking when shifting gears.
9. Faulty torque converter:
* The torque converter transfers power from the engine to the gearbox and ensures smooth acceleration. Torque converter malfunctions can cause jerking.
10. Incorrect gearbox setting:
* An incorrectly tuned transmission can cause jerking and shifting problems.