Q: Problem with AC

asked by on July 01, 2016

When I accelerate up to 30 MPH (and beyond) my AC switches from blowing forward, to blowing out of the dash like a defroster. Then, when I stop accelerating it switches back. What might be causing this and how much do you think it'll cost to fix?

My car has 40000 miles.
My car has an automatic transmission.

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