Close
QUESTIONS

RepairPal is your advocate for car care advice and guidance

Q: heater and ac will only come out of defrost vent! on 1990 Mercury Cougar

Rookie cbe0621eac06868b3efe0d8d1d3611e23c60d3114864ea2ec19a68cfbd3eebab
AT FIRST THE AIR WAS COMING OUT OF THE PROPER VENTS! WHEN USING THE AC THE AIR WOULD START TO COME OUT OF THE DEFROST VENT AND THEN COME OUT THE AC VENTS! THE HEAT DOES THE SAME THING AND COMES OUT THE DEFROST VENT! EVERYTHING NOW COMES OUT OF THE DEFROST VENT! PLEASE HELP! THANKS! JOHN
No car image 94a1663db56199c5353592009e34aaa51078a2469bed068bb8d6f0ba43accf97
Get a Repair Estimate
Guaranteed by certified locations nationwide. Learn more
RepairPal estimates are guaranteed at over 1,700 quality certified locations nationwide. Learn more
when using the max a/c the air will switch at intervals between the defrost, vents and floor vents. never noticed with the heat. its just something older vehicles do.
Didn't find what you were looking for?