I have an '86 GXL with a 5-speed, of course. When I'm in neutral, with the clutch out, it makes a faint rubbing/grinding noise. Sort of like static on a TV only softer.. It also puts a load on the engine. I'm thinking mabye my clutch needs an adjustment? If I push the clutch in, it goes away.

Also, it makes a similar sound when I'm driving, regardless of the gear. This is strange because my tranny shifts nice and smoothly.