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2000 Toyota Corolla Question: Knocking/vibration when car is at Idle and when fan / a/c on.

 

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s.palacio, 1.8L 4 Cylinder, Perris, CA, July 08, 2011, 21:44
 Rookie

Lightly knocking at idle, and much louder and faster when a/c or fan is on. The higher the a/c fan is on the faster and louder it gets.

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