Got a 2000 Ford Mustang GT with 137K + miles on it. About 3-4K miles ago, it started developing a rattling noise under the hood. It looks like it's coming from the belt area.... can pulleys go bad on a car? And if so...how big a deal is it to replace pulleys... I have attached a video... any advice would be appreciated.
YouTube - 2000 Ford Mustang GT
YouTube - 2000 Ford Mustang GT