AC switches to defrost when engine is rev'd up I have a 1992 bronco. The AC works good but as I'm driving down the road it goes from the dash vents to the defroster. But when i take my foot off the gas and count to 5 it switches back to the vents. It blows cold air the entire time. I have replced the AC/Heater control head too, but it still does it. Can any help me with this???? |