cummins isx new turbo and thrownig code

Discussion in 'Trucks [ Eighteen Wheelers ]' started by gregor, Dec 26, 2012.

  1. pawpaw1

    pawpaw1 Medium Load Member

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    Sep 9, 2011
    Dallas,Ga.
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    Gregor , how you makin out ? We all wanta know what's going on ?
     
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  3. Ramblin' Man

    Ramblin' Man Light Load Member

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    Dec 27, 2012
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    46 PSI Turbo Boost on ISX??? When, lugging from 1100 rpm ? How?
     
  4. pawpaw1

    pawpaw1 Medium Load Member

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    Sep 9, 2011
    Dallas,Ga.
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    The 88 was steady , pulling a grade , I think it was about 1400 RPM. I think I saw the 93 , for a second , but the laptop was on the passenger seat , and I have to kinda squint to see the numbers .
    I didn't look , but for just a second , twice , to make sure I was reading the correct parameter , but then I shut the computer down , satisfied I'd gotten my boost problem fixed.
     
  5. Ramblin' Man

    Ramblin' Man Light Load Member

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    Dec 27, 2012
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    Even at 88 its kinda seems high to me, interesting - why don't you RECORD like 5 minutes of hard pull to a file, its simple, I'd love to see that
     
  6. pawpaw1

    pawpaw1 Medium Load Member

    396
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    Sep 9, 2011
    Dallas,Ga.
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    Id like to do that . How ?
     
    gregor Thanks this.
  7. gregor

    gregor Light Load Member

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    May 13, 2011
    chicago,il
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    thats what i try to fix, all air leaks.... and i do a progress but still can find some small leaks, someone before me didnt mantain that truck properly, what is the leak you found? what is the air charge boot??
     
  8. gregor

    gregor Light Load Member

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    May 13, 2011
    chicago,il
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    all i have now is about 29-32 max. psi, will fix secondary tank leaks and leaking valve ( rear end of tranny) then i let you know what i got
     
  9. gregor

    gregor Light Load Member

    90
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    May 13, 2011
    chicago,il
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    no, im not russian, and yeahhhh i do all this in chicago , trucking is for thaft guys !!!!!! :)
     
  10. pawpaw1

    pawpaw1 Medium Load Member

    396
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    Sep 9, 2011
    Dallas,Ga.
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    Gregor ,look at the pipes ,coming from your turbo .going towards the front , where your air cooler is .
    There should be a metal pipe , then a rubber boot , then another metal pipe , then another rubber boot , which connects to the plastic intake to the actual charge air cooler.
    Walk around to the other side , the drivers side , and you should see the same thing. Those 4 rubber boots can develope leaks , even if the clamps are tight.
    That's where you do the Soapy Water test .
    Get a spray bottle , like an empty Windex bottle , put a couple of drops of dish washing soap in it , and fill it up with water.
    While your truck is sitting , use the cruise control switch to bump the engine speed up as far as you can , probably 1400 RPMs , then spray your soapy water all over those rubber boots , all the way around , especially the ends , where they connect to another part. Spray what you can reach , of your Charge Air Cooler , too . But especially the boots .
    If you see any bubbles , that's where you're loosing Boost.
    A bubble , doing this , means you're loosing Lots of pressure , when you're going down the road , especially pulling a hill.
    I found one leak , fixed it , ( temperairlly ) and my boost went from 27 , to over 40.
    If you find a leak at a boot , best thing you can do , is replace the boot , and both clamps !
    Run it , let it cool down , and re-tighten the clamps .

    Land BTW , where are you from ?
     
    gregor Thanks this.
  11. gregor

    gregor Light Load Member

    90
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    May 13, 2011
    chicago,il
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    im back home,thursday and friday layed under truck cuz found big leak on tranny 2 linesfor gears shifter, they are 3/8 of inch coming from the left side of tranny and they go to the back to metal plate and valve attached to it,also that plate has bad gasket so another leak, so bought new plate ,gasket all 4 lines and now whole truck keeps around 130 psi 2 hours ,turbo started respond like crazy, went bobtail for test drive and like pawpaw said im driving a hot rod ! on monday i get loaded trailer so let you know how she drive, and btw im polish guy
     
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