I took the shell off and the motor wire was off. Thanks for the tip.
However now the engine only runs about 3 feet and stops at a quarter throttle. As I turn up the throttle it goes about 3 feet again a stops until I hit ¾ throttle then it just races around the track at high speed.
I tried reprogramming the engine with code 74 but it did not make a difference.
I must have done something when I had the shell off but not sure what.
Any ideas would be appreciated.