Weird problem I’ve had for some time… The car makes a noise that sounds like a slipping belt and only does so at a speed of 15 mph or more. Its a manual and I know it can’t be a belt because I’ve done a little testing while driving. I’m going down a hill, put it in neutral, turn the engine off completely and coast down the hill and the noise is still there. So nothing in the engine is turning at this point, I’m just rolling. So what is moving at this point that could make such a noise?
It also makes the noise when the engine is running and what’s weird is I can almost make it go away (the cycles of the noise become less and less frequent if that makes sense) while in gear if I apply the gas just a touch to a point where I am neither accelerating or decelerating. Any ideas what this noise might be?