AC in my 2002 grand caravan is not cooling consistently

Your AC system is a closed system, so the fact you have to put more Freon in, means there is definitely a leak. I would check it out with a mechanic.

A mechanic would check the level of freon in the system first.

WHEN HIGH PRESSURE RELIEF VALVE OPENS YOU HAVE TOO MUCH REFRIGERANT IN THE AC SYSTEM OR OVERHEATED CONDENSOR,THE COOLANT FANS NOT WORKING,COULD HAVE BAD COOLING FAN RELAY OR BLOWED FUSE.THE ENGINE COOLANT TEMPERATURE SENSOR FAULTY NOT TURNING ON THE COOLING FANS TO COOL ENGINE CONDENSOR OR RADIATOR COOLANT.

must be low on freon

the control module is bad it has an intermittant fault replace this and it will work fine

you should go to a mechanic and check the A/C if the freon id low it won't cool , some time at mornig it give you the semsation that is cooling but probably not..

Check for a loss of freon, if it is low, check for leaks. If the system is not pressureized (ie: low on freon) the computer will not let the compressor or cooling fan activate. If it is not low on pressure, then systematically check each part of the system for operation.

That was probably not steam but escaping freon coming from the vents. Probably the best course of action would be to take it to an AC repair shop.

a refurbished compressor should be fine and will be cheaper than new, your should also replace the orfice tube (expansion), and the dryer, and the seals at the connection points.

Check the dodge website for recalls and see if the pcm needs to be updated. The pcm controls everything in that van.