Engine Possesed

I am having a problem with my 93 1500 Chevy. The issue is that the truck will start then after running for a while it will just shut off. Then Have trouble starting. I have replaced the fuel tank, filters, fuel injection unit, fuel lines, fuel pump among various other things. I am in the process of fixing it up. Have any clue as to what the issue is?

Not sure if the '93's had a "theft deterent (sp)" system in them. May be something to check into.

Since you've replaced the whole fuel system maybe you need to look for a spark problem?

FAS=Fuel-Air-Spark

I have changed the spark plugs and the oil. The truck sat for a two years before I bought it. Payed 100 bucks figured it would be a good fixer-uper love the truck. There is a plug that comes off of the fuel injection system that I think runs to a fuel sensor? could that be the problem? any ideas are welcome