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Peterbuild 337 Exh gas pressure above Max. ?

Discussion in 'Peterbilt Forum' started by habfleet, Nov 1, 2019.

  1. Nov 1, 2019 #1
    habfleet

    habfleet Light Load Member

    163
    23
    Feb 5, 2012
    elwood nj
    0
    I have a 2016 337 with a PX-9 eng. Truck keeps throwing eng. code 3382 . I have replaced the Dif. prs. sensor , Removed EGR valve cleaned and inspected.,removed Exh. pressure tube and cleaned.Insite indicates EGR Cooler 100% efficiency . Ran the DPF regen. Analyzer test indicates "Exh. Gas Pressure Above Max." During Regen the Barometric psi 30 and gas pressure sensor 135. Is the EGR pressure sensor bad ? Ran a second test and came back "All Parameters within Spec" I have had this truck back twice already I don't want to return it and it fails again . Any ideas ? Thanks in advance .
     
    habfleet, Nov 1, 2019
    habfleet, Nov 1, 2019
    #1
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  3. Nov 1, 2019 #2
    x1Heavy

    x1Heavy Road Train Member

    34,017
    42,135
    Mar 5, 2016
    White County, Arkansas
    0
    Sounds like your engine likes to run.

    You would want to hold on to that one. Usually it's the opposite with emissions problems. All sooty and anemic.
     
    x1Heavy, Nov 1, 2019
    x1Heavy, Nov 1, 2019
    #2
  4. Nov 1, 2019 #3
    QUALITYTRUCK

    QUALITYTRUCK Road Train Member

    1,805
    1,766
    Jun 14, 2009
    romulus,mi
    0
    You have to clean the differential pressure ports. Remove egr valve and look for 2 ports, 1 in each chamber. They will have the diameter of a coat hanger. sharpen end of coat hanger and with some force shove it through the ports until you can see end of hanger. It takes some time so don't give up. Very, very common issue.
     
    QUALITYTRUCK, Nov 1, 2019
    QUALITYTRUCK, Nov 1, 2019
    #3
    spsauerland, habfleet and magoo68 Thank this.
  5. Nov 1, 2019 #4
    habfleet

    habfleet Light Load Member

    163
    23
    Feb 5, 2012
    elwood nj
    0
    Yes I did that already and replaced the sensor
     
    habfleet, Nov 1, 2019
    habfleet, Nov 1, 2019
    #4
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