I have no idead what is causing this and need a little help. My 92 s10 blazer has the 4.3 tbi and it recently died and wouldnt start back up so i hauled it home and let it sit for the weekend and when i turned the key it started right up. So i took it around the block and it died half way around the block and once again wouldnt start. After i got it home i disconnected the fuel line off the throttle body and cranked the motor to see if the fuel pump was pumpin fuel and it squirted out gas like it should. So i tested the fuel injector connectors with a noid lite and they worked just fine, after that i bought 2 new fuel injectors and put them in. I got everything hooked back up and jumped it off and it ran great so i took it around the block and after the 2nd or 3rd lap it died again and wont start. It gets fire and turns over but wont start.

 

I would start with a new fuel filter......that's the easiest .....sounds like a No fuel deal.....

 

ignition module on the distributor

They sometimes die as soon as they warm up.
Might even be that it starts cold, runs great and cannot be restarted after shutdown when warm.

15$ - 25$ fix

 

Tried the fuel filter...didnt solve the problem but thanks for the suggestion

 

I know that the filter can get fuel thru it to run for a while then plug and kill ya...then after the pressure goes down the dirt backflushes then you can start and run again.... that's why i suggested it first.......

I heard a story once about a fuel sock on the fuel pump that would randomly fold and cut fuel supply........but that may be a long shot.....??

I've finally learned to start with easiest and go on to the next, after 68 years :-)

I'll keep posted on what you do.....