its my lil bro's an it cuts out when comin to a stop when off the throttle. i was thinkin maybe the idle speed valve stalling the engine.

 

will be either idle valve (take off and clean with brake cleaner)
gearbox speed sensor, disconect to see if it rectifies fault.
Plug for sensor is un bulkhead next to servo triangular plug.

Sean

 

cheers mate for the info i'll give em all a try an let you know!!