Signs of a faulty automatic transmission torque converter:
1. Slipping when shifting gears:
* Slow shifting or slipping before reaching a higher gear.
* Increasing engine speed without corresponding acceleration.
* Burnt oil or metal smell in transmission fluid.
2. Vibration or noise:
* Vibration when changing gears or when starting off.
* Grinding or howling noise from the transmission when the engine is running.
3. Jerks or jolts when changing gears:
* Sharp jerks or jolts when shifting to a higher or lower gear.
* Difficulty shifting gears in certain driving modes.
4. Overrunning clutch is not connected:
* Lack of traction during hard acceleration.
* Constantly high engine speeds when driving at cruising speed.
5. Transmission overheating:
* Increased transmission fluid temperature.
* Strange odor or smoke from the transmission.
* Enabling the emergency mode of the automatic transmission, which limits the operation of the transmission.
6. Transmission fluid leaks:
* Transmission fluid leaks from the torque converter or other automatic transmission components.
* Reduced transmission fluid level.
* The appearance of transmission fluid stains under the car.
7. Other signs:
* Difficulty starting the engine.
* Difficulty shifting gears from park or reverse.
* Limiting vehicle movement at low speeds.