Driving home from lunch on Thursday, my A/C quit blowing cold in my SVT Focus, and just started blowing hot air. I pulled into my driveway, and I could hear the car making a weird squealing noise. Here is a video. You can kind of hear the squealing noise, and you can see the A/C clutch freaking out at the bottom and not engaging with anything. So my thoughts are that the clutch has gone out on it. Does this seem reasonable? Is there any way to test it? Could it just be a leak that has made me lose all my refrigerant, therefore making the clutch act all funny? I might end up taking the car to my mechanic on Friday, but if I can self-diagnose before that, it would be nice. Thanks!