General symptoms:
* Slipping during acceleration: The donut slips without providing adequate traction, resulting in poor acceleration or slipping.
* Increased fuel consumption: A faulty donut uses more energy to compensate for slippage.
* Vibration or squealing: Worn or damaged donut components may vibrate or squeal during operation.
* Delayed Shift: The donut does not lock properly, resulting in delayed or hard shifting.
Specific symptoms for various donut malfunctions:
Friction lining wear:
* Slipping during acceleration at low speeds
* Vibration when shifting gears
* Gear shift delay
Hydraulic pump wear:
* Slipping during acceleration at all speeds
* Weak fluid pressure
* Automatic transmission overheating
Faulty vibration damper:
* Vibration while driving at any speed
* Vibration when shifting gears
Damaged torque converter:
* Slipping during acceleration
* Vibration during operation
* Automatic transmission overheating
Other possible symptoms:
* Difficulty shifting gears: The donut does not provide adequate fluid pressure to change gears.
* Grinding or knocking noise: Worn or damaged components inside the donut may make noise.
* Leaks: Faulty seals can cause fluid leaks.