DD looping at idle

Discussion in 'Trucks [ Eighteen Wheelers ]' started by me myself and I, Nov 21, 2016.

  1. TA Transport

    TA Transport Bobtail Member

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    Jun 25, 2019
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  3. TA Transport

    TA Transport Bobtail Member

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    Jun 25, 2019
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  4. mhyn

    mhyn Road Train Member

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    Northridge, CA
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    when you park 2-3 days fuel does not go back to tanks? no hard starts ?
     
  5. TA Transport

    TA Transport Bobtail Member

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    Jun 25, 2019
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  6. TA Transport

    TA Transport Bobtail Member

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    Jun 25, 2019
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    No hard starts just an idle with surge up and down. Get rpms up to around 10 and it goes away. It smooths out a lot after warming up but still has a slight surging when setting still.
     
  7. mhyn

    mhyn Road Train Member

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    I can't say anything without looking on pressures by DiagnosticLink .
     
  8. Niksys

    Niksys Bobtail Member

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    Aug 2, 2018
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    My DD15 have that issue for long time but my idle is stable. Doing it before and after fuel quantity valve was replaced, new Delta P sensor and EGR is about one year old - EPA10.
    Btw after replacing the fuel quantity valve the surge problem was solved (now stable idle)
    Still can't figure it out and I gave up.



    I apologize for the sound. Not sure why is so crappy.
     
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