I come to the guru's of Ford again!
My 2001 X 7.3 is only blowing heat in defrost mode.
Vac pump sucks but the heat module that moves when you change from defrost to heat doesnt. It will snap into defrost mode fast. If I manually pull up on the rod it will sit in heat but once I turn the knob it wont go back. When I unplug the vac line from the module I can feel it suck. Not hard, but you can feel it.
Where are the weak links in the vacuum system?
What's the easy way to test everything to rule things out?
Thanks
Chewman
My 2001 X 7.3 is only blowing heat in defrost mode.
Vac pump sucks but the heat module that moves when you change from defrost to heat doesnt. It will snap into defrost mode fast. If I manually pull up on the rod it will sit in heat but once I turn the knob it wont go back. When I unplug the vac line from the module I can feel it suck. Not hard, but you can feel it.
Where are the weak links in the vacuum system?
What's the easy way to test everything to rule things out?
Thanks
Chewman