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7.3 powerstroke

  1. loss of power

    99 & up 7.3L Power Stroke Engine & Drivetrain
    Hey guys, I've been troubleshooting this 2002 7.3 for 2 months now. After some improvements and a lot of figuring out what it's NOT, The power loss is now mostly evident at mid to high speeds. I can't accelerate past 84mph on flat highway, I can barely maintain 47mph up a hill on a highway...
  2. 99 7.3 Powerstroke SES coming on/off while driving

    99 & up 7.3L Power Stroke Engine & Drivetrain
    Needing others thoughts on what could possible be going on with my truck. Just recently changed out my 7.3 engine in my work truck due to the old one had a crack in the block leaking coolant. After swapping engines and getting the new one up and running I have a SES light coming on but only when...