My 1988 blazer with 4.3 runs great for a while and sometimes it just cuts off but after sitting for a few minutes it will crank back up. It don't do this all of the time.
I had a 89 blazer 4.3 was doing the same thing that was doing the same thing my problem was the crank sensor was cracked so once the engine heated up a lil the sensor would expand causeing it to have a bad reading shutting it down i changed it didnt have any problems after that.
hope this helps
SOURCE: 92 CHEVY BLAZER K1500 WON'T START
try messing with the radiator because it is most likely overheating
SOURCE: blazer wont crank after hard or lengthy rain
sounds like your distrubuter cab is cracked and allowing moisture in it which won't let it crank. if it happens again blow it out with an air compressor, and try to start it again, if it starts arter blown out, then it needs to be replaced.
SOURCE: 1988 Blazer Crank but will not fire
But is it getting fuel to the Carb? and have you checked to make sure you have fuel pressure? Also spark?
SOURCE: 2000 blazer turns over wont crank
you coul remove the # 1 plug wire (1st on drivers side) and see if your getting a spark. It may need a new distributer cap and rotor.or it just may need new spark plugs. fair warnig I am not a mechanic but have had similar problems like this that I have had to fix myself.
SOURCE: 2000 Blazer Cranks, Won't Start
i have a 2000 blazer 4.3 it cranks but wont start then sometimes it will start and either die 10 seconds later or die when you give it gas or put it in gear. i have replaced throttle position sensor, fuel regulator, fuel filter and fuel pump plz help
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