Like all things mechanical, the serpentine belt tensioner and idler pulley on C5 engines will eventually wear, develop play, and require replacement. A slight squeaking noise coming from either the ...
Owners of some 2007-08 Ford and Lincoln models with 4.6-liter and 5.4-liter engines may complain of a high-pitched hoot or whistle from the accessory drive belt system at idle. According to Ford Motor ...