VGT

Discussion in 'International Forum' started by Mr Bob, Oct 27, 2023.

  1. Mr Bob

    Mr Bob Light Load Member

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  3. Heavyd

    Heavyd Road Train Member

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    What program software do you have? If you have Navistar software, you need to run KOEO standard test first before anything else for engine off tests, or KOER standard test before engine running tests. When it is acting up again, key off, unplug the egr valve and road test again.
     
  4. Mr Bob

    Mr Bob Light Load Member

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    running texa. can do koeo and koer and others. dodono why but symptoms vary. sometimes the first one or two starts it will slowly die out. actual icp can be much higher when pressing throttle and its bogging and puking lots of gray smoke. found a cheap backpressure sensor. gonna throw that at it this week.
     
  5. Mr Bob

    Mr Bob Light Load Member

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    well that didnt work. lol
     
  6. Inderjit

    Inderjit Heavy Load Member

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    Have you checked the fuel pressure?
     
  7. Mr Bob

    Mr Bob Light Load Member

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    This truck is killin me. start engine do some throttle blips and after a few it runs bad. did this a few times to confirm a pattern. try to scan it and it clears up. no codes just runs normal. at one point it ran rough but clerared up. just ran it again this morning and it runs normal. lol
     
  8. Mr Bob

    Mr Bob Light Load Member

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    No i didnt.
     
  9. Inderjit

    Inderjit Heavy Load Member

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    Is there a quick coupler on top of the filter housing cap?
     
  10. Mr Bob

    Mr Bob Light Load Member

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    it probably has one. i normaly use the schrader port.
     
  11. Mr Bob

    Mr Bob Light Load Member

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    put it all back together. drove it around and all was good. the next startup its back to running bad. time to light it on fire. lol
    wish i had a picoscope.
     
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