My 1996 chevy s-10 blazer vin number W 4.3 liter v-6 vortec has spark good fuel preasure but stall when going down the road when it stalls still has spark and fuel preasure. but won't start until it cools down?

EGR need to be clean/replace.
Over time carbon can built up on the under side of the EGR valve and EGR air passage tube,
V6-262 4.3L engine?

Take off the EGR valve and spray WD40 or PB Blaster to help remove carbon.
A 22 rifle cleaning rod will help clean the EGR air passage tube.
Use a shop vac to clean off any carbon inside the tube and egr base.

MAKE SURE you use a NEW erg valve gasket to prevent exhaust leak.
Reconnect sensor connector.

You will see smoke when you start the engine. It's the remainder of the wd-40 cleaner.