This a little tale that some of you will enjoy and some will shake your head in disbelief.

Last year my A/C went out on my knock around pick up. The air compressor went out. Now I'm retired from being a Heavy equipment mechanic and have repaired or replaced many of these items on very large equipment. So naturally i will do it myself. I bough a compressor from Auto zone and a drier along with a new low presser switch . I as a concerned about the environment person took said truck to the local garage to have the refrigerant removed instead of dumping it into the air. when i finished replacing these items i took it back to the garage to pull a vac. and charge. Cool air at last. For less that 2 days and the new compressor went belly up. I took said POS compressor back and got another one along with new drier . I repeat the process. Cool air again. 1 day and the bearings went out on this one. 3 rd. time around the compressor is working. 3 weeks i start having troubles again. This time it's a electrical night mare. I chase the system and replace the relay- now i know it's good but still no power to the compressor or to the relay now. I locate a used (parts like this are no longer dealer item) control panel at a salvage yard and install it. (I'm on blood thinner so it's bleeding all the way) Still no power to the relay. You know the old saying if it doesn't work try reading the instructions. I found a parts brake down of the a/C system for this 02 nissan and found that a tinny little sensor inside the a/C duct work would turn off the compressor if it starts to freeze up. And if that censor goes bad it turns off the compressor. Now this long story made short i changed it this morning. If this is't it the repair i make will be with a ZIPPO!

Oh i left out the expansion valve . It took a pint of A positive when i finished with it.