1999 Ford F-150 Q&A

1999 Ford F-150 Question: what causes the air conditioner and heat to suddenly stop working??

one ac works fine next day just blows hot air switched to heat and still blowing same temp air. now its cold out and cant get any hot air same temp air in ac or heat. climate control knob not stripped blend door doesnt move when changing temp but doesnt seem to b broke -
Answer 1
you may have a couple of issues,poss low freon level and coolant level.start there. after that could be a multi. of isssues -
Answer 2
Change the blend door actuator if blend door is not moving. -