On a long drive over the weekend, truck developed a bit of a whine/ hum in the engine bay. Ain’t much in the engine bay so I figure it’s the water pump or the generator. I did fiddle with belt tension and oiled the generator. Didn’t seem to make much difference.
Seems like it’d more likely be generator. Water pumps seem to growl more than whine, in my experience. I can think of a few ways I might go about pinpointing….screwdriver as a stethoscope, remove belt and feel/ listen as I manually turn…
Before I waste an hour scratching my head, thought I’d get some input.
