For 1990-2009 cars

Step | Action | Yes | No
--- | --- | --- | ---
DEFINITION: A low pitch tapping noise caused by drive belt misalignment. This noise occurs on cold start-up at idle. A low frequency noise heard once per revolution of the drive belt.
1 | Check for severe pilling. Is there severe pilling of more than 1/3 of the rib depth? | Go to Step 2 | System OK
2 | Clean the drive belt pulleys. Is the repair complete? | System OK | Go to Step 3
3 | Install a new drive belt. Refer to Drive Belt Replacement. Is the repair complete? | System OK | --