Possible causes of shocks when switching an automatic transmission after a rebuild:
1. Incorrect transmission fluid level:
* Check the fluid level and fill it to the correct level specified in the owner’s manual.
2. Low transmission fluid pressure:
* Check the transmission fluid pressure using a pressure gauge. Insufficient pressure can lead to slipping and jolting.
3. Solenoid malfunctions:
* Solenoids control fluid flow in the transmission. Faulty solenoids can cause erratic shifting and jerking.
4. Worn or dirty clutches:
* Clutches transfer power from the engine to the transmission. Worn or dirty clutches can cause slipping and jerking.
5. Problems with the torque converter:
* The torque converter smoothly transfers power from the engine to the transmission. A faulty torque converter can cause vibration and jolting.
6. Incorrectly adjusted control cable:
* The control cable connects the shift lever to the transmission. Incorrect adjustment can result in inconsistent shifting and jerkiness.
7. Malfunctions in the electronic control unit (ECU):
* The ECU controls the operation of the transmission. Faults in the ECU can lead to incorrect gear shifting and jerking.
Solution:
*Consult a qualified automatic transmission repair technician for diagnosis and repair.
* All possible causes must be checked and eliminated.
*Take a test drive to ensure there are no jerks or other shifting problems.