Finally 74 in Michigan today so I took my Boxster out and after a thud and some high pitched squealling, then a burning rubber smell I quickly returned home. Took off the access panel to the serpentine belt and noticed some shreaded edges and the bolt to the tension pulley that connects to the alternator was sticking out and the pulley off. I was surprised to see the pulley actually sticking out. If the bolt wouldn't have jammed against the wall it would have come completely off. Flat bedded it to my local repair shop and he said it looked like the pulley went bad and he is going to call tomorrow with the estimate. Only 70k, thought it was supposed to last longer... Glad it did not come off all the way, I heard it could do some damage.
chad4835 
Tension Pulley Flew Off!!!
Threaded Mode
