Alternator whistle when accelerating
Ford motorhome service
Hi guys need some input, I have a 2014 1500 4x4 5.3 50k miles.the truck runs well but when accelerating there is a chirping noise that seems to coming from the area of the vacuum pump. It sounds like a belt slipping. I replaced all three belts,the water pump,alternator,belt tensioner and the vacuum pump.All genuine GM parts.
Oct 22, 2020 · It sounds like you heard whistling from the cooling system building pressure and letting go, like a teapot boiling water. The coolant must be very low because of a leak or you have something else wrong. Monneta on May 02, 2020: I heard a loud whistling noise that was heard a good minute then engine idle overheating came in the screen. What can ...