heating cooling ?

[redsnake]

im having a problem with the knob that changes a/c to vent to def..
it seems to be stuck on defrost and won't change to anything else. Anyone else ever have this problem?

I do believe it was normal when i bought it, don' remember for sure though.

[redsnake]

figured it out. hidden vacuum line that was unplugged.

[wtftalon]

thats what i was gonna say. fords use vacuum lines to control evap stuff.

[ieatz28]

When the a/c heat system loses vacuum they go into default mode and stay in defrost