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DD15 rough idle

Discussion in 'Trucks [ Eighteen Wheelers ]' started by sanjoel23, Sep 7, 2018.

Page 1 of 2
  1. Sep 7, 2018 #1
    sanjoel23

    sanjoel23 Bobtail Member

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    Aug 21, 2017
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    Changed out the fuel control quality valve and it actually sounds a bit worse.. I ran the truck for about a 100 miles and still marking low delivery pressure and injector. Time to change the fuel pump as well?
     
    sanjoel23, Sep 7, 2018
    sanjoel23, Sep 7, 2018
    #1
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  3. Sep 7, 2018 #2
    mhyn

    mhyn Road Train Member

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    Dec 29, 2008
    Northridge, CA
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    if pressure is low in rail you must have a fault code. do you have it ? what year is it and what is the mileage ?
     
    mhyn, Sep 7, 2018
    mhyn, Sep 7, 2018
    #2
  4. Sep 7, 2018 #3
    sanjoel23

    sanjoel23 Bobtail Member

    42
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    Aug 21, 2017
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    2012 eng 2 001 spn000094
    Fuel dlvrpress 04

    491Kmiles
     
    sanjoel23, Sep 7, 2018
    sanjoel23, Sep 7, 2018
    #3
  5. Sep 7, 2018 #4
    mhyn

    mhyn Road Train Member

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    Dec 29, 2008
    Northridge, CA
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    low pressure code is 157. if it is spn 94 fmi 04 then you have an electrical problem
     
    mhyn, Sep 7, 2018
    mhyn, Sep 7, 2018
    #4
  7. Sep 7, 2018 #5
    mhyn

    mhyn Road Train Member

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    Dec 29, 2008
    Northridge, CA
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    mhyn, Sep 7, 2018
    mhyn, Sep 7, 2018
    #5
  8. Sep 7, 2018 #6
    baha

    baha Road Train Member

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    Take your filters off an dump them in a bucket too be sure its not bad fuel?
     
    baha, Sep 7, 2018
    baha, Sep 7, 2018
    #6
  9. Sep 15, 2018 #7
    sanjoel23

    sanjoel23 Bobtail Member

    42
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    Aug 21, 2017
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    Hey all just a follow-up on this post I replaced my fuel pump and it fix the problem the idol is smooth and the truck turns on right away
     
    sanjoel23, Sep 15, 2018
    sanjoel23, Sep 15, 2018
    #7
  10. Sep 15, 2018 #8
    Antinomian

    Antinomian Road Train Member

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    Feb 17, 2013
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    Did they give you credit for the fuel quantity valve you already bought? New fuel pumps come with a new one already installed. I know because I went to buy an FQV, could not believe how much they cost, and just bought the whole pump instead.
     
    Antinomian, Sep 15, 2018
    Antinomian, Sep 15, 2018
    #8
  11. Sep 15, 2018 #9
    sanjoel23

    sanjoel23 Bobtail Member

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    Aug 21, 2017
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    There is no core charge(credit) for the quantity valve but there is one for the fuel pump.
     
    sanjoel23, Sep 15, 2018
    sanjoel23, Sep 15, 2018
    #9
  12. Sep 15, 2018 #10
    Antinomian

    Antinomian Road Train Member

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    Feb 17, 2013
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    I wasn't asking about the core charge. You said you installed a new FQV, then went back and installed a new pump. You should have gotten another FQV pre-installed in the new pump. I was just wondering if they let you delete it since you already had a new one and they cost over $700.
     
    Antinomian, Sep 15, 2018
    Antinomian, Sep 15, 2018
    #10
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