My truck runs rough I thought it was a vacuum problem,changed everything associated with the vacuum system,no change still ran rough. Changed EGR,MAP sensors,coolant temp.sensor.Thought the catalytic converter was bad,removed it,still no change.Changed the idle/air sensor on the throttle body,no change.Changed the computer module. The truck will start and once it gets warm it will idle,but put it in gear the engine will bog down won't accelerate, it's driving me a little crazy.Could it be an electronic fuel pump going bad or what because I have ran out of ideas. If anyone has an idea let me know.