Chevrolet Repair: 1998 k1500 4 wheeel drive, mass air flow, coolant temp

Question
QUESTION: my truck will start and run until it worms up then its like sombody shuts it off

ANSWER: HI DWAYNE, OK, WILL THE TRUCK RESTART AFTER IT STALLS ??? IF THE ENGINE WILL NOT START UP AFTER IT STALLS AND NEEDS TO COOL DOWN THIS SOUNDS LIKE A IGNITION SYSTEM FAILURE. SUCH AS  IGNTION MODULE, COIL OR POSSIBLE CRANKSAHFT SENSOR [IF THIS HAS ONE ??] BREAKING DOWN. THE BEST THING TO DO IS CK FOR FUEL AND SPARK. GET YOURSELF SOME STARTING FLUID AND SPRAY A LITTLE DOWN THE THROTTLE BODY WHILE SOMEONE IS CRANKING THE ENGINE OVER, IF IT STARTS IT IS A FUEL STARVATION PROBLEM. YOU KNOW THEN THAT THE IGNITION SYSTEM IS OK. FUEL PUMP OR RELAY IS BAD. IF THE ENGINE DOES START UP AFTER IT STALLS,MAYBE THE EGR VALVE IS STICKING,MASS AIR FLOW IS BAD..IF YOU CAN GET BACK TO ME ON MORE DETAILS I WILL TRY TO GET INTO IT FURTHER WITH YOU ..HOPE THIS HELPS, TOM.

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QUESTION: Well Tom I thank you for your response. It was the weirdest thing my truck was down a litere and half of coolent top it up runs like a charm. I am realy confussed but seemed to work. lol

Answer
HI DWAYNE,THIS REALLY SHOULD NOT HAVE THIS KIND OF EFFECT ON THIS PROBLEM. THE ONLY THING I CAN THINK OF IS THAT THE COOLANT TEMP SENSOR WAS NOT SITTING IN ANY COOLANT AT ALL, WHICH IN TURN WOULD FOOL THE PCM OF NOT KNOWING WHAT TEMP THIS ENGINE WAS AT. I COULD SEE IT RUNNING POORLY BUT NOT STALLING !!!!ONE FOR THE BOOKS I GUESS. TOM.