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I have a bearing noise comeing from the the intake area of of my 3.5L. mostly at idle gets better when AC is turned on. what could this be?

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I would suspect the AC compressor clutch is about to go. If it gets better with it on, it is spinning with the belt and not idling on the bearing. Take a wooden dowel, broom handle, whatever you can find, cut it about 3 ft, cup your hand over the end and put your ear in your hand, now with the engine running, be careful not to hit anything moving, put the dowel on every part, bolt, head, nut, pulley, compressor, alternator, you will find the loud one. Be careful not to hit anything, hope this helps.

Posted on Aug 05, 2010


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