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1990 chevy van beauville vibrates loudly at idle whith a/c on only. what is problem and solution?

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  • beauknowz Jul 03, 2009

    i will try that and confirm it is the compressor. it only happens at idle with a/c on. thanks

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Have someone cut the AC on & off as you listen under the hood. If it makes a noise when you cut it on, it is probably the compressor and I would guess that it is the main bearing in it. You can carefully take a solid stick and put it on the compressor and it will magnify the sound. You'll have to replace either the bearing or the entire compressor if it is leaking coolant. Hope this helps.

Posted on Jul 03, 2009

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