Noise Diagnosis - Vibration/Rattle

IMPORTANT: Feel the lines, the hoses, and the brackets during the diagnosis. Many noises stop when you contact the component.
Potential causes include the following conditions:
^ The belt is not in proper alignment in the pulley groove.
^ The belt tensioner is faulty.
^ The lines or the hoses are in contact with each other.
^ The brackets are loose.
^ Other drive components are faulty. Refer to other related bulletins.