Really confused… I have a 99 VW Passat, it is making a loud buzzing noise as I accelerate to speeds above 20-25mph. The noise sounds like a baseball card in your bike spokes (or a room fan) does. The noise disappears when I push the clutch in. Here’s the really weird part: when revving the engine as it’s parked in neutral, there’s no sound.
What the heck is going on?