For 1990-2009 cars

The next step after road testing the vehicle is to identify the frequency of the duplicated and abnormal vibration. Use the EVA in order to measure the frequency. If the EVA is not available, observe how the vibration feels or sounds. The majority of vibrations will fit into one of the following categories.

• | Vibrations that can be felt:

- | Shake

- | Roughness

- | Buzz

- | Tingling

• | Vibrations that make noise:

- | Boom

- | Moan and groan

- | Howl

- | Whine