Common causes of automatic transmission torque converter failure:
1. Slip:
* Clutch friction disc offset
* Friction material wear
* Low fluid level in automatic transmission
* Clogged automatic transmission filter
* Control solenoid malfunction
2. Lock:
* Broken locking ring
* Deformation of the torque converter drum
* Malfunction of the locking control solenoid
3. Vibration:
* Damage to pump gears
* Turbine malfunction
* Torque converter imbalance
* Bearing wear
4. Overheating:
* Insufficient fluid level in the automatic transmission
* Clogged automatic transmission cooling system
* Automatic transmission pump failure
* Excessive load on automatic transmission
5. Increased noise:
* Bearing wear
* Damage to gears
* Friction disc failure
6. Liquid leakage:
* Damage to shaft seals
* Cracks in the torque converter housing
* Pump seal malfunction
Additional factors contributing to torque converter failure:
* Improper maintenance or repair of automatic transmission
* Using low-quality automatic transmission fluid
* Extreme operating conditions (towing, sports driving)
* Malfunction of other automatic transmission components affecting the operation of the torque converter (pump, control module)