timkedz Hello, I am having a lot of trouble with my 2000 Toyota Corolla's A/C system. First of all, on the first hot day this year, I tried to start my A/C and found it pumped out hot air. No compressor engagement at all. I checked the fuses and relays and found them all to be okay. Serpentine belt was fine as well. Took it to the garage and lo and behold, it was low on refrigerant. It wasn't empty, but low. I had it vacuum checked and no obvious leaks were found. Then, all the old refrigerant was sucked out and it was refilled with R134a with dye and double checked for leaks. Apparently none were found. A/C was icy cold. However; About a week later, I turned on my A/C on an 80 degree day and again, no cold air!! I opened the hood and found the compressor to be running, but, absolutely no cold air at all. I checked the temperature lever to make sure that I didn't leave it on the hot setting. I noticed that car's rpms don't change very much when I engage the A/C clutch. Again, it spins, but, doesn't seem to be doing anything. Any help or information would be greatly appreciated! Thanks!