High pitched squeal

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High pitched squeal

03-24-2006, 10:13 AM

mccabe

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Join Date: May 2003

Location: Cinti. Oh.

Posts: 18

High pitched squeal

I have a 94 C-220 with digital control for heating and ac. I have recently developed a vacuum leak and a high pitched coming from passenger side footwell area. It only squeals when the system is in the off position. It is very loud at idle and subsides as I accelerate. Has anyone run into this? If I turn on ac or heat it goes away.Other than that the system works fine. Any thoughts would be greatly appreciated. Regards

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