I HAVE A 97 4.3 2WHEEL DRIVE S10 TRUCK. STARTS WHEN IT WANTS

sounds like your fuel pump is going out. Next time it happens remove fuel cap and have someone turn ignition to the on position not crank. You should hear the fuel pump run for 2-4 second. If you don't hear it come on then try beating your gas tank hard with a rubber mallet while Ignition is in on position.listen for fuel pump to come on. If it starts after this then fuel pump it ?s.

stop speeding

It could be the Bendix inside the starter which engages the
starter drive.

Any cehcke engine light on

Check the U joints on drive shaft & both front axles.

only half way there if you have a tbi check the crank sensor/ cam sensor that is the first line of business on that truck if the crankshaft sensor fails the truck stops dead when you wait a few minutes the sensor re energizes and the truck will work again for a bit antiknock can cause similer problems but not while the truck is running

check fuel pump relay first and yes it will

starter drive probably bad can be replaced

When I crank my truck it runs wide open for a minute of so and then it starts to idle down. What causes this? It is a 1992 Chevy S10 v6 pickup. How can I fix this problem? I have no manuel on this vehicle for a diagram of the engine at all.

Thank you. Dave

Have you had the truck scanned for codes? If so, what was the code, codes? Why did you replaced those listed parts. Can you hear any hissing noise coming from the engine or engine compartment?