91 350 sdl have had problem with center vent flaps closing on AC and diverting air to defrost flaps. At times I can adjust by turning temp wheel to the red area, center vents will then open. Any ideas of problem?
Next probelm compressor froze, broke part of serpitine belt, broke wires to compressor. Replaced compressor, no power to compressor, jumped reply, compressor works looks like needs new reply. Now the center vents will not open at all, help!