1994 pickup stalling instead of idling

Hi. My 1994 pickup (5-speed) stalls instead of idling. I'll turn the truck on but it dies right away instead of idling. If I keep the gas pedle down after I startup the truck it will continue to run but the second I let go of the gas pedle it dies. This all started after I was driving down the road and the truck started to "chug" and lose power...and eventually stalled. Any ideas? Thanks all !!

I had the same problem with my 93 pickup. I have since replaced my intake valve and fuel filter which seemed to do the trick. You could also try a new distributor cap.