Has anyone had this problem and solved it, if so what was the issue?
So when my heat or ac is off in the car it always has warm "air" coming out of the floor vents. I've had this problem with my last couple foxbodys. When i had the dash out to do the heater core, i vacuum checked all the vacuum "solenoids" behind the dash to see if they hold vacuum. They did, what else could be the issue? The temp control knob works, it changes from hot to cold. Any ideas? Thank in advance.
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