91 Tempo Heater/AC Vents Stuck on Defrost

05-25-2007, 11:34 PM
I need to know what to do to correct a vent problem. Regardles of what setting I use the airflow from the hearter/vent/AC will only blow out of the defrost vents. I can get a little out of the floor in heater mode, but it is not working correctly.

What would the fix be for this?

06-02-2007, 12:38 PM
Im having the same problem with my gf's car. I've checked the fuses under the dash and removed the Heating A/C controls. All was in order and nothing even showed signs of stress for being 16 years old.

08-29-2008, 10:25 PM
Check the small vacuum hose at teh top center of the firewall. I found mine broken; cut off the bad end and reinstalled on stub. The heating and a/c controls began working properly immediately. These controls are operated on a vacuum system.

01-16-2009, 11:55 PM
Vacume sounds right, mine does the same, but fixes its self after a few minutes driving

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