When I am driving my ac works excellent, when I stop or idle it gets warm, freon is full, any idea's?

Freon is not at the proper amount so the high and low pressures are not right. Thus, you get warm air at idle and cool air at higher rps when driving.

With AC in and car idling in Park are the radiator fans running ?

solved by owner

make sure the cooling fan is working if so the freon charge could be low

A mechanic would check freon pressure both high and low - - could be something electrical, or lack of air thru the condenser, or freon flow in the system.

IS THE SYSTEM FULL OF FREON? IF ITS LOW THE A/C CLUTCH WILL NOT ENGAGE. ITS KIND OF LIKE A FAIL-SAFE FOR THE SYSTEM. IF THE FREON IS FULL AND YOU HAVE 12V TO THE COMPRESSOR I WOULD CHECK OUT THE CYCLING SWITCH ALSO.

Hello, Are the cooling fan(s) coming on with the truck in park and the engine at idle? If the cooling fan(s) are not working A/C will not cool with truck setting still.

does the compressor keep cycling on and off ? if so then it is low on refrigerant causing the cycling, sometimes you have to bypass the compressor pressure switch to stop it from cycling long enough to get enough refrigerant in the system, but of course you need to check for a leak if you are trying to recharge the unit then add a refrigerant with dye solution in it to locate any leaks, note leaks and then evacuate system amd rapair the leak source and then draw the system down add the proper compressor oil or refreigerant with oil in it. you may want to have a qualified AC repair facility do this , so they can properly evacuate and recover the refrigerant material... thanks , please rate my help...

should idle around 700

Your system has R-134 Freon in it. the 134 is made up of smaller molecules than the old R-12. The R -134 permeates through the rubber parts of the system. If the system gets too low on Freon, the compressor will stop coming on.(low pressure cut out switch). Have the system serviced with an A.C. machine that can vacuum, measure the amount of Freon in the system, and add the right amount. The machine can also inject die. Later the die will show up under a black light.This will show any leaks you may have.