Question about Hyundai Motor 2004 Sonata

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Loud screaching sound when Starting

I have a 2004 hyundai GLS. I have had the car for about a year and a half. It has made a low whistling sound since I bought it but just recently has turned into a loud screeching sound when the car is started. It stops once I begin to drive the car. Anyone have any ideas on what the problem could be?

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It sounds like the belt is slipping,and as it does, it warms up, grips better, and the noise stops. Check the serpentine belt tensioner, it should have a scale (range) that shows if your belt is stretched beyond it's serviceable use, which could be the problem, and an easy fix. Let me know how u make out.

Posted on Dec 22, 2008

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Fan belt or drive belt loose or worn. If it has tensioner, try replacing belt, if it has an adjustment to tighten, Inspect belt and if o.k. just tighten it, but I suspect belt worn too.

Posted on Dec 22, 2008

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