First check to see if there is freon in the system and if yes then check the pressure switch and pigtail........
There is no 1995 ford Expedition!
Typically, that means that there is either a damaged wire, something is plugged in wrong or someone has connected something to the wiring improperly.
TRY TO UNHOOK HOSE FROM WASHER AND BLOW AIR THROUGH
if you run it very long you will blow the seals
An air conditioner blows out heat
Low refrigerant causing compressor not to start?
no but it may depend on the conditioner
Check the Horn wiring and if this is good then replace the horn.
Portable air conditioner will not blow cold air. What to do?
you could have a short in your wiring, or your fuel pump might need to be replaced(short, damaged, draws too much power)
Not likely
heater will not blow on a 1996 ford contour