I am 67, used to working on my Buick. I am trying to help my daughter; who drives an elderly woman to the Doctor frequently in her 2007 SXT.
Last spring, her first with the car, I had to buy the large refrigerant recharge kit and recharge the system. It worked great for the rest of the year. Now it is beginning to get really humid and on sunny days the car will get too hot. The air is just blowing unmodified. I made the mistake of assuming it had leaked out over the winter & I bought another recharge kit. After I hooked it up I can see it shows high pressure, definitely not leaked out. I then thought it might be a fuse for the compressor; but I don't see that listed anywhere.
In the Buick, the AC compressor is at the top of the engine. I can physically see if the compressor is kicking in. It has high and low pressure valves, right there. On the Caliber I feel lost. I can't see the compressor, I can't tell if it's trying to cycle or not. I think it's down by the front passenger tire compartment. I am told the compressor is always on and has no fused clutch. Is that correct?
I am looking for a guide or steps to diagnose why it is not seeming to come on. I have the Service Manual, but it is over my head and offers no "Start Here" flow chart that I can follow. I am a good old-school mechanic; but I really need your help.
I appreciate your help and I will reply.