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ses light

  1. 7.3 SES light, power loss, no DTC showing

    Diesel Diagnostics
    About a week ago the SES light started coming on when I accelerated along with the engine running rough. It would go away and smooth out after a minute or so and be fine but now it's running rough with the SES light on all the time. I have 1. cleaned air filter 2. changed fuel filter 3. changed...
  2. 2000 f350 7.3l rough idle help

    99-03 7.3 Motor Problems
    A problem recently started with my 7.3l. I realize that whenever my S.E.S light goes out my engine has an erratic idle. Like it's surging or similar to me revving the engine. When the light comes on it runs normal. I haven't replaced anything I just need an idea where to start at. I try to pull...
  3. 7.3L SES light after 10 minute warmup

    99-03 7.3L Powerstroke Problems
    Okay, so my rig has 496k miles on her. Just drove from San Diego to home in Florida. Not one issue... 22mpg. However, now when I drive to work in the am I am having some issues. At first start up..when cold she starts and runs fine... perfect, but after about 9 miles or (10 mins) and she warms...
  4. SES light last three mornings

    99-03 7.3 Motor Problems
    Howdy, First time posting (total noob). I have a 1999 F350 dually with a 7.3 and auto trans. 214000 miles. I have owned it for a few months and it runs/drives perfectly but for the past three mornings the SES light has stayed on after the first start of the morning. It only stays on for a couple...