1994 GMC Jimmy 94 Jimmy stalling

I have a 94 jimmy 4.3L vortex. Problem: In morning truck starts good I drive to work 5 miles, as I pull in to job not everyday but it will stall out and start fine to park. After work truck starts fine I able to drive 2 miles sometimes more then it stumbles and stalls now if I'm coasting I can put in neutral and it starts right up put it in drive for a few minutes then stalls again, do everything again and it happens again sometime it will stay running long enough to make it home and stall in drive way (stalls about 5-8 times). If I at a full stop its harder for me to get back started. Things I have done to vehicle: new battery, new alternator, new fuel pump, new fuel filter. After replacing pump and filter it still stalled sat on side of road half hour till it started stalled immediately sat another 20 minutes then was able to drive stall coast restart stall restart and get home. After getting home let it idle in driveway half hour and no stalling. Removed hose from PCV and idle picked up, removed Pcv checked so see if valve was opening and good by sucking on it and shaking it. Don't have a fuel pressure gage but I bleed off pressure at check point and turned key on and pressure was again built. I'm stuck don't know what else it could be please help. It is OBD 1(no scanner) and strapped for cash.