Torque Converter Clutch Shudder
WARNING: This page is about a different car, the 2003 Buick Regal and 2003 Buick Century. However, it is still accessible from the selected car via links, so may be relevant.
The key to diagnosing TCC shudder is to note when it happens and under what conditions.
TCC shudder which is caused by the transaxle should only occur during the apply or the release of the converter clutch. Shudder should never occur after the TCC plate is fully applied.
If the shudder occurs while the TCC is applying, the problem can be within the transaxle or the torque converter. An unknown condition is causing one of the following conditions to occur:
- An unknown condition is not allowing the clutch to become fully engaged.
- An unknown condition is not allowing the clutch to release.
- The clutch is releasing and applying at the same time.
One of the following conditions may be causing the problem to occur:
- Leaking turbine shaft seals.
- A restricted release orifice.
- A distorted clutch or housing surface due to long converter bolts.
- Defective friction material on the TCC plate.