I've got another mystery for you guys lol. This time it's not on my Malibu, it's on my grandmothers 1995 Buick Lesabre. She was in town one day and the car started knocking really bad. The compressor was locking/locked up. She took it to a garage. They put a new compressor, and claimed to put a new drier and orfice tube. I have my doubts they replaced the drier because it still looked dirty. But anyway the car ran good for 16 days, and yesterday she and I rode out in it. When the compressor firsts turn on, it's locked up. The clutch slips and the engine bogs down, but eventually starts spinning and blowing cold air. We stopped and I smelled a burning smell, smelled just like burnt clutch. We got back home and i raised the hood. The clutch on the compressor looked white it was so hot!! And all the paint around it burned off, and the entire low side line had at least 1/4 inch of ice on it, even the line that is 2 inches away from the exhaust manifold! The high pressure side WAS frozen too near the firewall, which I thought was strange because that's the "hot line." After it cooled off, I tried to turn the front of the compressor, and I couldn't move it at all, it was Locked up tight, and I don't even know how the engine car turn it. Well we took it back and, naturally, they said that nothing was wrong with it. We thought we'd just drive it until it burned up completely that way there would be something obvious wrong with it. The repair costed right at $700.00 and it's crazy that it only lasted 16 days. If they flushed the lines and replaced all of that stuff they claimed to replace, along with the proper oil, then the compressor shouldn't of seized. They need to fix it regardless. I hated to see them take advantage of my grandma. They tried to tell her they were required the replace the alternator too, but I told her no way! I'm sorry this is such a long rant, and I hope you guys can shed some light on this situation! Thanks a lot!