Hi everyone, I am back at it with the AC. This time it is my Girlfriend's mother's car. So I have been tasked with the repair. I can start the car with the AC off and it will run without a problem. Once I turn on the AC it makes a funny noise and the motor stops running. I tried reving the motor and turning on the AC, hoping it was the idle up sensor for the AC. This didn't work and the motor still died. When I popped the hood, it almost had a faint burnt rubber smell. I didn't want to kill the motor more then I had to, so I parked her car in my garage until I can get it fixed and she has my spare car now. I am 90% confident it is something to do with the compressor, but could it be as simple as the compressor clutch? Any ideas to check and distinguish between the two? I really do not want to have to replace the compressor to just find out that it is the clutch. Any help from the KIA forum would be greatly appreciated. Thanks in advance everyone!!!