Test Description
WARNING: This page is about a different car, the 2002 Buick Regal. However, it is still accessible from the selected car via links, so may be relevant.
The number(s) below refer to the step number(s) on the diagnostic table.
- 2. This test is to verify that the symptom is present during diagnosing. Other vehicle components may cause a similar symptom.
- 3. This test is to verify that the drive belt is causing the rumbling noise. The rumbling noise may be confused with an internal engine noise due to the similarity in the description. Remove only one drive belt at a time if the vehicle has multiple drive belts. With the drive belt removed the water pump may not be operate and the engine may overheat. Also DTCs may set when the engine is operated with the drive belt removed.
- 4. Inspect the drive belt to ensure that the drive belt is not the cause of the noise. Small cracks across the ribs of the drive belt will not cause the rumbling noise. Belt separation is identified by the plys of the drive belt separating, this may be seen at the edge of the belt or felt as a lump in the belt.
- 5. Small amounts of pilling is normal condition and acceptable. When the pilling is severe the drive belt does not have a smooth surface for proper operation.