I have a 1997 GMC Sierra K1500 with a 5.7L Vortec V8. When I press on the accelerator the engine surges. It seems to me its not getting enough fuel and when it starts to surge I lose oil pressure. I put a brand new fuel pump, 3 actually, in it, changed fuel filters regularly, new plugs and wires, mass air flow sensor, throttle positioning sensor, and new fuel pressure regulator. I drained the tank and cleaned it out thinking I might have had a dirty tank. I'm considering putting a brand new tank with a new pump and sending unit. What should I do next because I'm not what is wrong with the truck? Thank you for the assistance.
Friday, February 4th, 2011 AT 1:46 AM