1992 Chevy Cheyenne 4.3L engine keeps quitting

I'm having what seems to be a fuel issue with my 92 Chevy 1500, 4.3L V6. It will start and run until warm, but past that it cuts out during driving or if left at idle. I have already replaced the fuel pump(can hear it running), fuel filter, and the fuel pressure regulator. Once the truck quits, it will restart if I use ether or leave it alone for 30min-1hr. It runs fine but will eventually cuts out again. The truck only seems to cut out near idle speed. There are no check engine lights on at any time.