89 s-10 Blazer 4.3 , 164000 miles. Engine runs for about 5 min. and then shuts off. If you turn ignition off and then on you can hear fuel pump come up, turn to start position and engine turns over but no fuel sprays from injectors.If you wait for about 30 min engine will crank and whole process starts again. No codes
Replaced: Fuel pump, screen, filter , fuel pump relay , oil pressure sending unit , electrical tune up , rebuild TBI and regulator, Idle air control valve.Can't find any vacuum leaks.Engine used to idle and run rough but idles pretty good now , still alittle rough but ok.Seems like something is shutting off injectors as some component heats up .
Engine just heats up when problem happens.
This is driving me crazy!