Possible causes of vibration when shifting gears in an automatic transmission:
1. Low transmission fluid level:
* Insufficient transmission fluid will reduce the pressure required for smooth gear shifting.
2. Contaminated transmission fluid:
*Old or contaminated fluid cannot effectively lubricate and transmit power, resulting in vibration.
3. Problems with gear shift solenoids:
* Electromagnetic solenoids control gear shifting. If they malfunction, they can cause delayed or harsh gear changes, resulting in vibration.
4. Worn or damaged friction linings:
* Friction linings on clutches and bands wear out over time, reducing traction and leading to vibration.
5. Torque converter malfunction:
* Torque converter ensures smooth gear shifting. Its malfunction can cause vibration and slipping.
6. Problems with the driveshaft:
* The driveshaft transmits power from the transmission to the wheels. Its malfunction or imbalance can cause vibration.
7. Worn or damaged engine or transmission mounts:
* The supports support the engine and transmission. Their wear or damage may allow them to vibrate.
8. Electrical faults:
*Electrical faults affecting transmission sensors or controls can cause rough shifting and vibration.
What to do:
* Check the level and condition of the transmission fluid.
* Replace the transmission fluid and filter if they are dirty or old.
* Diagnose and replace faulty shift solenoids.
* Repair or replace worn or damaged friction linings.
* Check and repair the torque converter if necessary.
* Check the driveshaft and replace or repair it if necessary.
* Replace worn or damaged engine or transmission mounts.
* Carry out electrical diagnostics and repair any faults.
Contact a qualified mechanic for diagnosis and repair.