Help! This Corsica runs so bad it should be easy to find, Right?

I have a bad hesitation on accel. Sometimes stall's, difficult to crank. Fuel pressure stays on 13 psi at all times, someone has already changed the computer, prom, injector, map sensor , tps. ...

FIX posted 1/21/2001

iATN Members:
Login to view full TechHelp request
Auto Repair Pros:
Join iATN to read this TechHelp request
Vehicle Owners:
Find a nearby iATN member to repair your vehicle