ac fan changes when down shift
#1
ac fan changes when down shift
OK. When I'm driving down the road and give it enough gas for the tranny to downshift for more torque to speed up or go up a hill. the ac which was blowing out the dash vents will switch to the defrost vents? Strangest thing I've ever seen. Any ideas??
1992 Olds 98
1992 Olds 98
#2
Senior Member
True Car Nut
the door actuators are likely vacuum controlled and defrost is the default position. if the vacuum supply or any of the connections are getting leaky it wouldnt be as powerful to hold in the right position
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