Check the following...............
1. Freon system level.
2. Pressure switch.
3. Clutch wire harness.
4. If above are okay then scan the vehicles computer.
It is probably a Dodge. Consider yourself fortunate that it even runs.
An air conditioner blows out heat
Probably leaking freon.
Portable air conditioner will not blow cold air. What to do?
You are low on coolant to the heater core.
Your A/C needs recharged.
Your 1989 Chevy truck air-conditioner condensation drain can be found on the bottom of the air conditioner compressor. The air conditioner condensation drain routes condensation to the bottom of the engine compartment.
Because something is wrong with it. When it is off it does`nt blow anything, that `s why you only notice it when it is on.
It's out of freon or refrigerant.
about 5 minutes
There are several causes that an air conditioner is only blowing cold air for a short period of time then only blow hot air and then not going back to cold. This is especially common in the hotter weather including in the 90s and above. It could be from the air conditioner freezing over. You can fix this by simple trouble shooting and if that doesn't work call a repair man.
diagram for 1999 chev subarban air conditioner