[zoaman]

I WOULD DE SOLDER THE MOTOR AND ESC AND THEN RESOLDER.THIS WILL ELEIMINATE A BAD JOINT .THIS WONT COST ANY THING.I SAY THIS AS YOU FIND ITS AFTER A JUMP(HEAVY LANDING WILL CAUSE THE CABLES TO LOOSEN TEMPARARILY).THEN IF NOT TRY AS OTHER HAVE SAID WITH SENSOR CABLE.BUT NORMALLY WHEN YOU PUSH THE CAR IT TURNS THE MOTOR PASSED THE DOWND PHASE AND RESTARTING THE MOTOR.THENTHE MOMENTUM KEEPS IT GOING.