Truckers Report Jobs

Find Trucking Jobs

Company Driver Company Driver Dry Van Dry Van Flatbed Flatbed Refrigerated Refrigerated Specialized Specialized Owner Operator Owner Operator
More Trucking Job Searches ⌄ Fewer Trucking Job Searches
⌃

ISX Cummins

Discussion in 'Trucks [ Eighteen Wheelers ]' started by hoss699, Oct 6, 2013.

  1. Oct 6, 2013 #1
    hoss699

    hoss699 Bobtail Member

    19
    9
    Oct 5, 2013
    Midland. Tx
    0
    I recently bought a 2006 pete with a 500 hp ISX cummins. I have a driver on it. It's been averaging 4.11 mpg. I'll admit he may idle it more than I would, but we make a lot of runs together and I know he doesn't then. Also, when we're running together I make sure we only run about 67 mph. I'm wondering if it's the egr valve, but I'm not sure. I've owned cats for years and years so this cummins is unfamiliar territory to me.
     
    hoss699, Oct 6, 2013
    hoss699, Oct 6, 2013
    #1
  2. Truckers Report Jobs

    Trucking Jobs in 30 seconds

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

  3. Oct 6, 2013 #2
    baha

    baha Road Train Member

    4,137
    2,837
    Jul 25, 2013
    ga
    0
    CK type in (cummins ISXCM871 technical discussion ,top box hit search. could help if u have own tools.
     
    baha, Oct 6, 2013
    baha, Oct 6, 2013
    #2
  4. Oct 6, 2013 #3
    hoss699

    hoss699 Bobtail Member

    19
    9
    Oct 5, 2013
    Midland. Tx
    0
    I got them tools. what do I need to do
     
    hoss699, Oct 6, 2013
    hoss699, Oct 6, 2013
    #3
  5. Oct 6, 2013 #4
    baha

    baha Road Train Member

    4,137
    2,837
    Jul 25, 2013
    ga
    0
    go to top box of this screen next to search type in what i said and read all of it
     
    baha, Oct 6, 2013
    baha, Oct 6, 2013
    #4
  7. Oct 6, 2013 #5
    dannythetrucker

    dannythetrucker Road Train Member

    2,856
    4,032
    May 26, 2011
    everywhere, man
    0
    dannythetrucker, Oct 6, 2013
    dannythetrucker, Oct 6, 2013
    #5
    baha Thanks this.
  8. Oct 6, 2013 #6
    J-DUBB85

    J-DUBB85 Bobtail Member

    4
    0
    Aug 17, 2013
    0
    Your truck being an 06 is a Cummins C/M 870 it has a different EGR system than the 871..
     
    J-DUBB85, Oct 6, 2013
    J-DUBB85, Oct 6, 2013
    #6
  9. Oct 7, 2013 #7
    Heavyd

    Heavyd Road Train Member

    7,812
    6,265
    Feb 4, 2009
    0
    Yep, CM870. Some the sensors are the same, not all in the same spot. Check/clean or replace as needed. Once you get over 65 mph the mileage really starts to drop off. Try to run 64-65 and see if you get any significant improvements. After that you need to start checking for boost leaks anywhere between the turbo and intake, including leaking past the EGR valve. Run with the EGR valve unplugged for a bit and see if it improves. Top end tune-up might be needed.
     
    Heavyd, Oct 7, 2013
    Heavyd, Oct 7, 2013
    #7
  10. Oct 7, 2013 #8
    nasriza

    nasriza Road Train Member

    2,398
    2,074
    Feb 1, 2013
    Chicago, IL
    0
    How is this truck on power and what kind of diffs and trans do u have u should be getting a lot better economy that
     
    nasriza, Oct 7, 2013
    nasriza, Oct 7, 2013
    #8
  • Truckers Report Jobs

    Trucking Jobs in 30 seconds

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