Well yes the new speed sensor did fix one problem, but I still get T248 and alarm sounds, only the forks lift, tilt and lower no drive at 1000rpm.

The flywheel has 132 teeth for the starter motor how many fingers on the out side of the flywheel for the speed sensor?

If I raise the forks up very slowly then the engine will rev up to 2K
before I get the error code.
If I lift quickly the forklift drops in to emergency mode with T248 in display window. Slow lift and no drive?