DD15 rough idle

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

  1. sanjoel23

    sanjoel23 Bobtail Member

    42
    13
    Aug 21, 2017
    0
    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?
     
  2. Truckers Report Jobs

    Trucking Jobs in 30 seconds

    Every month 400 people find a job with the help of TruckersReport.

  3. mhyn

    mhyn Road Train Member

    4,255
    4,515
    Dec 29, 2008
    Northridge, CA
    0
    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 ?
     
  4. sanjoel23

    sanjoel23 Bobtail Member

    42
    13
    Aug 21, 2017
    0
    2012 eng 2 001 spn000094
    Fuel dlvrpress 04

    491Kmiles
     
  5. mhyn

    mhyn Road Train Member

    4,255
    4,515
    Dec 29, 2008
    Northridge, CA
    0
    low pressure code is 157. if it is spn 94 fmi 04 then you have an electrical problem
     
  6. baha

    baha Road Train Member

    4,137
    2,837
    Jul 25, 2013
    ga
    0
    Take your filters off an dump them in a bucket too be sure its not bad fuel?
     
  7. sanjoel23

    sanjoel23 Bobtail Member

    42
    13
    Aug 21, 2017
    0
    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
     
  8. Antinomian

    Antinomian Road Train Member

    2,163
    3,425
    Feb 17, 2013
    0
    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.
     
  9. sanjoel23

    sanjoel23 Bobtail Member

    42
    13
    Aug 21, 2017
    0
    There is no core charge(credit) for the quantity valve but there is one for the fuel pump.
     
  10. Antinomian

    Antinomian Road Train Member

    2,163
    3,425
    Feb 17, 2013
    0
    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.
     
  • Truckers Report Jobs

    Trucking Jobs in 30 seconds

    Every month 400 people find a job with the help of TruckersReport.