sounds familiar ish.. my car has this whine like a supercharger, which is ok... but at idle it squeaks periodically, and when at a full stop when RPM's are lower, it is more consistant, and with the AC or defroster on at astop, it is much more so. I've yet to replace the tensioner with over 200K on the clock, so... it's a poss. I also have the gatorback belt.
