Possible problems with the automatic transmission after replacement:
Fluid leak:
* Poorly tightened or damaged bolts or gaskets
* Worn or damaged seals
* Cracks in the gearbox housing
Gear slip:
* Insufficient fluid level in the gearbox
* Torque converter malfunction
* Worn or damaged friction discs
Difficulty shifting gears:
* Faulty gear shift solenoids
* Contamination or clogging of the valve body
* Malfunction of the electronic control unit (ECU)
Vibration, noise or jerking:
* Incorrect adjustment or installation
* Worn or damaged bearings or gears
*Differential fault
Other problems:
* Fault codes or malfunction indicator on the dashboard
* Transmission overheating
* Lack of movement or loss of power
* Burnt oil smell
Possible reasons:
* Incorrect installation or manufacturing defects
*Use of poor quality parts or fluid
* Inadequate maintenance or fluid replacement
* Faults in other components such as the engine or control system
Recommended actions:
*Consult an experienced mechanic to diagnose and repair the problem.
* Ensure regular maintenance and replacement of transmission fluid.
* Avoid extreme driving conditions and overload.
* If you notice any unusual symptoms, stop using the vehicle immediately and call a tow truck.