Question about 1987 Chevrolet S-10 Pickup

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When I drive or even start my 1987 chevy s10 2.8 v6 pickup truck, there is a noise that almost sounds like a siren coming from the alternator. When I'm on drive and I shift it into Neutral the idle goes sky high. How can I fix it?

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It is either a loose belt, or the bearings are going in alternator. remove belt and spin alternator by hand to see if this is the problem.

Posted on Jul 08, 2010

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