Suspension NVH Road Test Procedure
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Noise, Vibration and Harshness (NVH) diagnosis must start with the customer interview and be followed by a road test. NVH usually occurs in five areas:
- Tires.
- Engine accessories.
- Suspension.
- Drivetrain.
- Body and interior trim panels.
NOTE:
A gear-driven unit will produce a certain amount of noise. Some noise audible at certain speeds or under various driving conditions is acceptable. Slight noise is not detrimental and must be considered normal.
It is important that an NVH concern be isolated into its specific area as soon as possible. The easiest and quickest way to do this is to perform a road test.