First off try this thread. Anything SP will be found here.
The Speed Passion Thread
-Does the motor work with a different ESC?
-Sensor wire connected and in good condition? (no broken wires?)
-What application- Touring car?
-IS the ESC in the correct spot on the receiver?
-Switch ESC and steering around, does the steering still work with the trigger and does the steering wheel now operate the throttle?
-Has the motor been dis-assembled? Anything missing?