1990 Ford F 150 Only Blows Cold Air Defrost Regardless Position Selector Switch

1990 FORD F-150
123,000 MILES
Avatar
CCULBE01
  • MEMBER
  • 1 POST
My 1990 f-150 only blows cold air from the defrost regardless of the position of the selector switch on the dash. Checked heater core, seems alright, along with a few vaccum lines.
Feb 17, 2013 at 4:01 PM
Advertisement
Repair Safety Notice: This information is for general instructional purposes only. Vehicle repair can be dangerous. Verify all information, follow manufacturer service procedures, use proper tools and safety equipment, and consult a qualified repair shop when needed.