1994 Pontiac Sunbird Dashboard Airflow

1994 PONTIAC SUNBIRD
118 MILES • 3.1L • V6 • FWD • AUTOMATIC
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TUMAINIJ
  • MEMBER
  • 1 POST
Air only flow thru the AC vents no matter what is selected (Heater, Defrost, Vent, or AC).
Nov 13, 2015 at 2:11 PM
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HMAC300
  • ✓ASE Certified Mechanic
  • 48,601 POSTS
  • ASE Certified Mechanic
this is a vacuum operated system when you get no vacuum so check for a vacuum leak first see attached pic, then check vacuum motors to see if they are working or a line came off or broke. due to age of your car the vaccum control may be leaking there see pics all three pics show vacuum and what opens what and what color the vacuum lines are. if one is broken/rotted you can replace with vacuum line from auto parts
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Nov 13, 2015 at 3:25 PM
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