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Detroit 14 L DDEC 5 - no power on hills, after inframe.

Discussion in 'Freightliner Forum' started by Verdel, Sep 1, 2015.

Page 2 of 4
  1. Sep 2, 2015 #11
    Verdel

    Verdel Medium Load Member

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    I don't have the tools, maybe have to make some from the gauges available at Harbor Freight.
     
    Verdel, Sep 2, 2015
    Verdel, Sep 2, 2015
    #11
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  3. Sep 2, 2015 #12
    QUALITYTRUCK

    QUALITYTRUCK Road Train Member

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    romulus,mi
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    Again, look at my previous post regarding testing the vpod. It does not cost a thing to test, but 10 minutes of your time.
     
    QUALITYTRUCK, Sep 2, 2015
    QUALITYTRUCK, Sep 2, 2015
    #12
    Verdel Thanks this.
  4. Sep 2, 2015 #13
    Verdel

    Verdel Medium Load Member

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    I am kind of new using the DDDL 6.5, how do I test the VPOD?
     
    Verdel, Sep 2, 2015
    Verdel, Sep 2, 2015
    #13
  5. Sep 3, 2015 #14
    mhyn

    mhyn Road Train Member

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    go to Diagnostics menu--ecm I/o configuration-find pwm #4 right click, enter 0-to 99 at bottom for duty cycle, click activate. engine must be turned off, ignition on
     

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    Last edited: Sep 3, 2015
    mhyn, Sep 3, 2015
    mhyn, Sep 3, 2015
    #14
    Verdel Thanks this.
  7. Sep 3, 2015 #15
    mhyn

    mhyn Road Train Member

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    how to verify turbo is adjusted properly.
    1. connect dddl, open diagnostics instrumentation's egr window.
    2. start the engine and idle. the boost pressure must be 0.0-0.5 psi / 0-3 kpa
    3. turn off and start again the engine. with cruise raise up to 1000 rpm. boost pressure must be 2.5-3.1 psi /17-20 kpa.
    all measurement must be done within 15-20 seconds after engine is started. that time egr valve is closed.
     
    mhyn, Sep 3, 2015
    mhyn, Sep 3, 2015
    #15
    Verdel Thanks this.
  8. Sep 8, 2015 #16
    Verdel

    Verdel Medium Load Member

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    The problem is the fuel pressure. I picked a oil pressure gauge from Harbor Freight (0-140 psi). One of the adapters is the exact size of the Fuel temp sensor hole. Started the engine, at 600 rpm, I have - 12 psi at 1500 rpm - 17 psi.

    Tomorrow I will change the check/regulator valve on the return fuel line ($244). The fuel pump was replaced 3-4 months ago, practically new.

    What else could be wrong???
     
    Verdel, Sep 8, 2015
    Verdel, Sep 8, 2015
    #16
  9. Sep 9, 2015 #17
    mhyn

    mhyn Road Train Member

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    mhyn, Sep 9, 2015
    mhyn, Sep 9, 2015
    #17
  10. Sep 9, 2015 #18
    mhyn

    mhyn Road Train Member

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    fuel pump or check/pressure regulator valve. nothing else if you don't have bubbles in davco housing.
     
    mhyn, Sep 9, 2015
    mhyn, Sep 9, 2015
    #18
  11. Sep 9, 2015 #19
    Verdel

    Verdel Medium Load Member

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    Last edited: Sep 9, 2015
    Verdel, Sep 9, 2015
    Verdel, Sep 9, 2015
    #19
    mhyn Thanks this.
  12. Sep 9, 2015 #20
    Verdel

    Verdel Medium Load Member

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    When I changed the fuel filter, I have to drain the fuel that is in the Davco housing and inspect/clean the bottom of it. Then I put the new filter on with the new O-rings, filled with clean diesel to the top and start the engine. In the beginning, there were some bubbles, but after 3-4 minutes - disappeared. I assume this is normal, because when I opened the Davco housing, there was some air present to the system.
     
    Verdel, Sep 9, 2015
    Verdel, Sep 9, 2015
    #20
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