I searched but couldn't find anything on this topic. I have been hearing a noise when the AC comes on, coming from the compressor area. But when I started it earlier, it made a different funny noise for several seconds, and then I could smell something like rubber burning. With the vehicle running, and the AC off, it looks like the pulley that the belt is spinning wobbles a little bit, and it makes a faint noise. Then when the AC is on the noise gets worse, kind of a tap tap tap, but not a sharp noise, maybe like a scrub scrub scrub? and the pulley seems to maybe wobble a little more, and I get a faint rubber smell for a few seconds. Don't have any problems with the AC. 95k on the vehicle and its had a hot life in FL and SC since the beginning, so that AC has been running a lot. Could the compressor clutch be going out? Im not real knowledgeable about AC systems in general, looking for input on this.