Engine goes dead going down the road

STARTER DEAD MEANS NO CRANK????????????
CRANKS FAST BUT DOES NOT START, MEANS JUST THAT.?
OR cranks then STARTS AND STALLS.?
I CAN NOT UNDERSTAND THE END OF LINE 3 ABOVE.
WE CAN NOT HEAR YOUR STARTER SPIN FAST, YOU MUST SAY IT AND TYPE IT. OK.
THE IDLE CONTROLS ARE FAILING (IAC VALVE)
OR you never got tune up in 20 years? and the spark plugs are shot.
as expected 100% that.
IF BY CHANCES IT DOES CRANK FAST AND WILL NOT START
UsE 5% right foot throttle to start the engine,

if the starter is dead, shift to neutral and crank that way
the users guide (free) tells how.

a starter can be dead silent
or clicks
or chatters
or goes GRRRRRRGVRRRRRR that load cranking sound.
what does your starter do in line 3 , hot started.

Before that 6th or 7th try when it finally cranks what is it doing when it's not starting? Sounds of any kind? Anything else?

Depending on the actual code for the O2 sensor, the fuel pressure may be low at times. You may want to look at fuel pressure and delivery.

I doubt the problem is timing. If that were the case, it would have the same miss at road speed.
Is the check engine light on ?

I have 94 s 10..4.3 v6. it does the same thing have replaced fuel pump and filter,ignition module,cap rotor plugs wires,coil,ground strap...driving down the road jus dies like the key got shut off....for a while when troubleshooting through the parts you could get it to restart.....now when it dies it cranks really hard when trying to restart..ive checked the timeing its fine....if i wait a few min it will usually start...sometimes it will show a check engine light sometimes not......never know when it will happen sometimes jus down the the road from the house sometimes 100miles down the road......sometimes three times in a mile sometimes not for weeks at a time..Wtf...Im ready to shoot it like a lame horse....its a shame too its a sharp lil truck thats a two owner and never spent a night outside in its life...i knew the original owner ...i bought it with 90,000 on it it only has 148,000 now and still looks like new...

Maybe vacuum leak it loses when first starting

or it could be in your spark plus, plug wires, and coil. I would check those also.

If the vehicle cranks normally when not starting check the tach see if it is reading any engine speed. Sounds like the crank sensor is going bad very common fault on the 3800 series 1 & 2 engines. You must remove the harmonic balancer to replace the sensor.

plug ,plug wires, injectors. dose it do it when the weather is wet or cold or all the time

Crank sensor?