DRIVING 98 JEEP CHEROKEE DOWN THE ROAD AND IT SHUT OFF. WILL CRANK OVER BUT WILL NOT FIRE. I HAVE TESTED THE COIL AND IT IS FINE, BUT THERE ISN'T ANY SPARK COMING OUT OF IT. JUST WONDERING IF THERE IS A WAY TO TEST THE CRANK POSITION SENSOR WITHOUT TAKING IT OFF OF THE VEHICLE, OR COULD THERE...