When I turn on the air conditioner the air only comes out of the defrost vent
not the vents on the dash the way it used to so as a result it does not work
very good. Is there a relay that changes the air flow? Thanks Darwin
Heat-A/C vent controls are vacuum controlled, so you have a cracked vacuum line, or pinched hose in dash. If you're handy take glovebox out, and then start car (have a flashlight handy) to see what's not moving correctly.
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