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While driving the a/c fan redirects the air to defrost or floor vents when accelarating the gas pedal. What is causing this?

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Hi,
You probably have a vacuum leak.

Posted on Jul 05, 2010

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You need to get the pressures tested in the AC system to first eliminate that as being the cause. Also not knowing what vehicle we are talking about here, we would need to know this after first checking pressures.

Posted on Jul 05, 2010

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