Tried to start my 2008 xc90 3.2 this a.m. made loud squealing noise under hood? Opened hood smelled burnt plastic then found some of the burnt black plastic below the lowest pulley. I think its the tension idler pulley. Belt looks OK but I have no clue how to get to that pulley? Do I remove or move the a/c compressor and power steering pump to get to this pulley?