Hi jesseg,
The idler pulley bearing if faulty would also cause the belt noise. For ribbed belts, the tension should be more than normal v-belts and I normally twist the longest part to test. If there is insufficient tension, it would cause the noise.
The crankshaft if equipped with dynamic balancer would cause the noise if the damper is bad.
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Monday, October 27th, 2008 AT 1:30 AM