Have a 99 ram with the 3.9liter. I verified the system is fully charged. I also put some leak detector in it to make sure i didnt have any leaks. The system will work for about ten mins and then will not work for quite some time before it will again. like ten mins. It doesnt blow below 70 degrees either. I cant figure this problem out. could a plugged orrifice tube cause this? Maybe the compressor only works sometimes. idk anymore.