For 1990-2009 cars

Important: Complete the following steps prior to beginning the wheel drive shaft diagnosis.

1. Review the Diagnostic Starting Point - Vibration Diagnosis and Correction .
2. Perform the Vibration Analysis - Road Testing in order to effectively diagnose the concern.
3. Review the system operation in order to become familiar with the system function. Refer to Wheel Drive Shafts Description and Operation .

### Visual/Physical Inspection

• | Inspect for aftermarket equipment and modifications which could affect the operation of the wheel drive shafts or other rotating components.

• | Inspect the easily accessible or visible system components for obvious damage or conditions which could cause the symptom.

• | Thoroughly inspect the entire wheel drive shaft for visible damage, leaking joint seals, and missing seal clamps.

• | Inspect the wheel drive shaft seals for cuts, tears, or other damage which may allow the loss of lubricant and the entry of contaminates.

### Symptom List

After performing the Visual/Physical Inspection and no visual signs of damage or other interference impairing the wheel drive shaft function is apparent, it may be necessary to remove the wheel drive shaft from the vehicle and manipulate the joints manually. Any binding or otherwise impeded movement of the joints may indicate damage which could contribute to the concern. Refer to the following:

• | Click Noise In Turns

• | Clunk When Accelerating from Coast

• | Clunk Noise When Accelerating During Turns

• | Shudder or Vibration During Acceleration