I have a 1992 Ford Explorer, Eddie Bauer series with a 4.0 engine, automatic, 4x4. Starter spins however it does not engage in fly wheel. Starter tested good at local parts store. Bought new starter same spin. Fly wheel appears to be good no teeth chewed or missing. Rotated fly wheel a few inches to rule out warp same results. Electrical has no obvious problems. Looking for some info, thanks. Keith