Hesitation and stalling problems!

[fattom]

Hey guys, so I'm having a bit of a problem... as title says the blazer is hesitating and stalling on me seemingly randomly. Just threw on a fuel filter but no change.
The part that's weird to me is there doesn't seem to be a change in driving conditions that causes it. If I let the truck idle in the driveway it will stall after a minute or 2 but idle doesn't fluctuate it just turns off. Driving at low, or mid speeds, lite acceleration or foot planted, it will hesitate randomly, and when I let off the gas and slow down it stalls.
Any ideas??
Tom

 

[rampage]

Guessing this is your 87 K5 ...
Does it do it with a full tank as opposed to a partially filled tank? Reason I ask is because the rubber fuel line on the pick-up tube in the tank has a tendency to split with these newer fuels and can suck up air. May not be your problem but something to keep in mind.

 

[fattom]

Yes it is the 87... sorry forgot about that part lol but the tank is about 3/4 full right now. It was my daily for a couple months, the problem started out of nowhere... I usually gas up every week, tank usually doesn't get too much lower than half unless I was driving around everywhere that week. So it's still within its normal fuel levels. Although I can't rule out this option. I was thinking about ordering a new fuel pump from rock auto just to throw parts at it but I want some other ideas to check before I spend money.

 

[tRustyK5]

Unplug your EGR, the vacuum connection and the electrical plug and see if it solves the problem...make sure to put a temp plug in the vacuum line.