was driving home from work tonight, had the ac running, as i normally do, all was well, hit traffic, and i hear what sounds like the ac compressor failing, was very loud, almost sounded like the tick over of a corsa lol, but much worse, air con was still working perfect however, when i turned the ac off, the noise stopped. got home and had a look, seems more to be coming from the tensioner area. cant really explain it too well, but it was very noticeable from inside the car, also it only happen on idle... bit baffed hope someone can help
