Reasons for the automatic transmission jerking when changing gears:
1. Low transmission fluid level
* Low fluid levels reduce pressure in the system, which leads to clutch slipping and jerking.
2. Contaminated or old transmission fluid
* Dirty or old fluid loses its lubricating properties, resulting in increased friction and jerking.
3. Worn or damaged clutches
* Worn or damaged clutches may not engage fully, resulting in slipping and hesitation.
4. Faulty shift solenoid
* Shift solenoids control fluid flow and shift gears. A faulty solenoid can cause a delay or jerk when shifting.
5. Problems with the torque converter
* The torque converter converts engine torque into motion. Malfunctions in the torque converter, such as slipping or locking, can cause jerking.
6. Electrical problems
* Wiring or sensors associated with the transmission may malfunction and cause jerking.
7. Mechanical problems
* Worn or damaged gears, bearings or drive shafts can cause noise, vibration and jerking.
8. Software errors
*Modern electronically controlled transmissions can experience software glitches, resulting in erratic operation and jerking.
9. Clogged or faulty oil filter
* A clogged or faulty oil filter can restrict fluid flow, causing pressure loss and jerking.
10. Wear of rubber seals
* Worn rubber seals can leak fluid, causing pressure loss and jerking.