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So in the process of of taking the A3 out of winter hibernation , I notice a REALLY loud noise coming from the front of the engine , I am thinking water pump , alternator , idler pulley ? So I start by taking off the serpentine belt and find the belt SPLIT down the middle I can't believe that the belt was the cause of the noise , but in the essence of KISS , I get my SPARE belt and install it , start it up and WOW , no noise . I was thinking the worst , as you could put your hand on the alternator and feel the noise in your hand ! BTW , I was doing my PM checks as I am taking the MV to "Military Appreciation Night" in town today . Just goes to prove do your PRE-TRIP's and check for any unusual noise ! I am about to take it for a ride and see what else fall off !!! LOL 