if it makes a sort of grinding/squeeling/rattling noise, and goes away when you push in the clutch, or after the car warms up, more than likely its your throw out bearing.....they're about $30 and you have to pull the tranny or engine to get to it....i have had this problem and its a pretty common problem

14b custom turbo kit, modified starion front mount, 9.6:1 JE pistons/Eagle rods....running 12psi
screw flanders