I have a 1995 gmc / chevy sierra c1500 5.7 v8 TBI.. The major problem I'm haveing right now is that I start her up and she starts.. the idle goes to about 1500 then surges for a moment then dies.... I have already replaced Coolant Temp Sensor, EGR valve, Plugs, Wires, Rotor, Distributor Cap, IAC, MAP Sensor, Fuel Pressure Regulator, Injector O-rings, Air Filter, Battery, Vacuum Lines, Oil and Filter..... I also did an Ohms check on the Fuel Relay and its sitting close to .79. I'm running out of ideas an money to keep going on this thing. Anyone with anything simlar? Thanks.