Air conditioner

Asked by May 24, 2017 at 01:15 PM about the 2007 Mercury Grand Marquis

Question type: General

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

1 Answer

25

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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