1. Delayed Acceleration: When you press down on the gas pedal, you may notice a delay before the car accelerates. This is because the torque converter is slipping and not effectively transferring power from the engine to the transmission.
2. Lack of Power: The car may feel sluggish and have difficulty accelerating, even when you press the gas pedal down all the way.
3. Rough Shifting or Jerking: The transmission may shift roughly or jerk when shifting gears, especially when accelerating or going uphill.
4. Shuddering: You may feel a shudder or vibration coming from the transmission when the torque converter is slipping. This is caused by the torque converter not being able to properly lock up and causing the engine and transmission to fight against each other.
5. Stalling: In severe cases, the torque converter may slip so much that the engine stalls, especially when the car is stopped in gear or idling.
6. Overheating: The torque converter can generate a lot of heat when it is slipping, which can cause the transmission fluid to overheat. This can lead to further problems with the transmission and engine.
7. Check Engine Light: The check engine light may illuminate due to the torque converter slipping. This is because the slipping torque converter can cause various transmission-related trouble codes to be stored in the car's computer.