Help! Cummins ISX no Boost!

Discussion in 'Trucks [ Eighteen Wheelers ]' started by Trouble65, Mar 9, 2010.

  1. rollinsmoke

    rollinsmoke Light Load Member

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    Dec 23, 2008
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    Thats the sensor at the thermostat hoousing i believe........How did they find that? Were there any codes?
     
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  3. Trouble65

    Trouble65 Medium Load Member

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    Jan 11, 2009
    Ontario Canada
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    They did not want to tell me how or the code for this message.
     
  4. Cowpie1

    Cowpie1 Road Train Member

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    Nov 25, 2008
    Kellogg, IA
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    I had a similar problem about a year and half ago. That same sensor. But when I did the overhead a couple of months later, the turbo accuator also was not quite working properly, so had that replaced. Nary an issue since.
     
    Pacific Islander Thanks this.
  5. Hardlyevr

    Hardlyevr Road Train Member

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    Jul 30, 2009
    Mapleton Depot,PA
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    Glad to read of both these fixes. My problem isn't that I have no boost, but at low boost 15-20 under very light load, or when the turbo is spooling back up after coasting, I get a terrible screeching reedy sound. And it is much worse when ever I am above 5000 ft altitude. In Eisenhower tunnel it is terrible. I had it once b4, and it was better after the EGR was replaced, but these sensors might be part of the problem too.
     
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