For the past 6 months, my A/C compressor has been locking up. I was driving about 30 miles today and the vents started blowing hot air, I got out to see why it was doing so and I never heard a squeal like I usually do. This time, it was making a sound of meteal rubbing metal. I rolled my windows down and drove to my house and had a friend over who wanted to look at it. I turned the car on, turned the A/C on and opened the hood. It blew cold air.
He was telling me that the belt must have expanded or did something else. I drove around all night w/the a/c on and just noticed that along with the squealing, the car is also doing the metal rubbing metal sound again, but it only does this when the A/C clutch is moving.