Throw out bearing noise
I have a 99 f250 7.3L 4x4 that I had the clutch replaced in 2 months ago. from the time that I picked it up from the Mechanic, it makes a loud grinding noise when in running neautral with the clutch out. The noise stops when the clutch is pushed in. I am thinking that it is assembled incorrectly but the mechanic is trying to tell me the noise is being caused by bad syncronizers in the tranny (6spd manual). It shifts fine, so I'm not buying that its bad syncros. Any help in this area?