Truck Repair: L 10 WONT STAY RUNNING, diagnostic test equipment, celect

Question
I HAVE L10 CUMMINGS WHEN I START IT UP IT RUNS FINE FOR ABOUT 2OR3 MIN. THEN IT JUST FALLS DEAD.IT WILL START RIGHT UP BUT IN 2 TO 3 MIN. IT WILL FALL DEAD.PLEASE HELP POINT ME IN THE RIGHT DIRECTION

Answer
If it is a Celect it might have idle shutdown ENABLED in the programming.That would have to be DISABLED with a computor device or some sort of diagnostic test equipment able to change parameters.If not a Celect(electronic) then a problem with ignition circuit or aftermarket shutdown device or fuel delivery problem.