Quote:
Originally Posted by LittleBlue
I've removed the belt and spun both, quiet and smooth.
And yes it's between 40 and about 55 mph, gets louder when you let go of the accelerator and coast
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Whine from the inside of the alternator may or may not sound evident when spun by hand.
Also, you said the noise was engine-speed dependent, but then gave a road speed where you hear it most.
Break it down - is it tied to road speed or engine speed? If you have an AT use manual mode to isolate.