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Having some issues with my '93 C1500 stalling and dying. It started last month when I was replacing parts to get my truck back on the road after sitting for a long time without much use. After I had managed to get the A/C blowing cold air again (freon, compressor pigtail and tensioner pulley) I noticed that the idle would slow and get choppy, even stalled and died once. I went back to work on it and ended up putting in a brand new Delco egr valve, IAC, fuel pressure regulator assembly, emissions tubing, intake adaptor, intake and egr solenoid. Even with all the parts the truck will still stall with or without the ac engaged and gets significantly worse with the egr solenoid plugged in. As in it stalls terribly at very light throttle since it looks like the valve completely closes when you hit the throttle just right. The engine is a jasper 350 crate with around 80k miles and Ive replaced every single sensor on it at some point or another. I should also mention that before this work was done I'd had the egr blocked off completely with a plate and an adjustable fuel pressure regulator in. I just wanted to get it back to stock once the stalling started so I could have a reliable truck again. At this point i'm worried the problem may be in the pcm or prom since it was running great most of the day with the solenoid unplugged then started stalling again after sitting for an hour turned off. I'm stumped