Air Conditioner blows hot air when jeep is stopped

I woild be checking the vent controls as if the ac is working and the core was blocked then the air would be cool when the heat was selected but not changing Fixing the heater has resulted in a /c not being good enough to cool the air if the vent is not properly selecting. The point is that if the vent selection is not working properly (vacuum hoses) then the 2 faults will be related.

If you have a viscous fan hub have it replaced as it is not working. The problem you have is that the engine is not driving the fan to draw air through the radiator when idling so the engine overheats . When moving the air flow from driving cools the radiator and so the temp goes back down. If you have electric fans have the codes read to find the fault or check why the electric fans are not working.

Could be a list of things including low on freon, low pressure switch, relay, or the a/c clutch on the compressor.

check to see if your cooling fans are working because when they dont work, your air will blow nice and cold when driving but will be hot air when stopped in traffic.

2004 Suburban air conditioner blows hot air to the dirver side but cold air to the passenger. This does not happen all the time but has occurred several times this last summer.

car air conditioner blowing hot air , this kind of problem often cause by a refrigerant leak or clogged condenser.

Maybe your heater is working at the same time. An open heater valve can cause this. Maybe there is a leak in the vacuum that pull the heater valve diaphram close.

BLOWING HOT AIR YOU MAY HAVE A RESTRICTION ON THE SYSTEM, OR MAYBE A REAL BAD LEAK THAT UR FREEON IS ALL GONE,

I have a 2002 Jeep Liberty and after driving for about 30 minutes the air conditioner would start to blow hot air. The air conditioner clutch was sticking. I could hit the clutch and it would kick in and start to work. I went to Advance Auto and purchased a big spray can of electric motor cleaner and a big spray can of WD-40. I soaked the clutch with the electric motor cleaner, used the whole can, then soaked it with half a can of WD-40. The clutch has worked perfecty ever since.