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Old 01-05-2002, 11:54 AM
can-do can-do is offline
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Join Date: Jan 2001
Location: Tucson, Arizona
Posts: 758
Could it be the a/c idler pulley?

Greetings Jim,

If you have the York type compressor with the upper idler pulley then it is highly possible that when the compressor is engaged the lack of lubrication on it's center bearing may be your cause of squealing when loaded down by the a/c

Charles
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