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Detroit 60 Series - Loss of Power

Discussion in 'Freightliner Forum' started by JWardrip, May 15, 2014.

Page 1 of 7
  1. May 15, 2014 #1
    JWardrip

    JWardrip Bobtail Member

    4
    1
    May 15, 2014
    0
    Truck has lost power, loss of MPG, can hear a fluttering in exhaust when jaking down a hill and start easing back into the throttle, best way I can describe it is like a choke on on an old pick-up truck? I originally was told that I had a restriction in the fuel system or getting air in the fuel system! I've replaced every fuel line and fitting on the truck, other than the restrictor fitting and the chevk valve! I've replaced both fuel filter housings, and fuel pump, everything was replaced with new parts! Still nothing has improved whatsoever!!! So then I was told I had to have a bad injector seat! So I then replaced a new head and 6 new injectors...Still no luck on fixing my problem or wallet I bought a new Air Dog Fuel System and STILL NO FIX! Between Detroit and Freightliner repair shops I could've darn near bought another truck or at least a couple brand new engines
     
    JWardrip, May 15, 2014
    JWardrip, May 15, 2014
    #1
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  3. May 15, 2014 #2
    russtrucker

    russtrucker Road Train Member

    1,767
    337
    Mar 27, 2012
    Central PA
    0
    what is it. 14.0L or 12.7 non egr.
     
    russtrucker, May 15, 2014
    russtrucker, May 15, 2014
    #2
    racer24 Thanks this.
  4. May 15, 2014 #3
    JWardrip

    JWardrip Bobtail Member

    4
    1
    May 15, 2014
    0
    Is that for sale? I don't know if u got it or not but its a 12.7 non egr
     
    JWardrip, May 15, 2014
    JWardrip, May 15, 2014
    #3
  5. May 15, 2014 #4
    wonderdog24

    wonderdog24 Medium Load Member

    377
    127
    Mar 1, 2012
    Puyallup,Wa
    0
    Have you had it pressured tested for a Charge air cooler leak???? What about changing out the turbo boost sensor????
     
    wonderdog24, May 15, 2014
    wonderdog24, May 15, 2014
    #4
  7. May 15, 2014 #5
    freightrunner

    freightrunner Heavy Load Member

    722
    182
    Mar 25, 2012
    Georgia
    0
    I would check the turbo boost sensor first.. If that doesn't work have Detriot look at the ecu that can sometimes cause loss of power..
     
    freightrunner, May 15, 2014
    freightrunner, May 15, 2014
    #5
  8. May 15, 2014 #6
    BeenJammin

    BeenJammin Light Load Member

    256
    118
    Dec 17, 2013
    0
    Do you have a pyro? I agree with wonderdog24, make sure your ataac hasn't bursted wide open. Make sure something weird hasn't took place with a muffler causing a serious restriction. If nothing is found at either place, I would go back under valve cover and start looking for something that was missed in parts swap over to new head, or something that was set wrong etc.. Make sure you don't have something collapsing on intake air side of system or ataac boots, also.
     
    BeenJammin, May 15, 2014
    BeenJammin, May 15, 2014
    #6
    Kpolo Thanks this.
  9. May 15, 2014 #7
    spyder7723

    spyder7723 Road Train Member

    15,467
    25,009
    Mar 31, 2013
    sarasota, fl
    0
    Does it have a wastegated turbo? It will cause serious lack of power if stuck. Rather cheap fix to.
     
    spyder7723, May 15, 2014
    spyder7723, May 15, 2014
    #7
  10. May 15, 2014 #8
    JWardrip

    JWardrip Bobtail Member

    4
    1
    May 15, 2014
    0
    Yes I have a wastegate turbo that is a year old and I plugged vaccum line off that works wastegate so I get the full turbo boost........Is the ECU the same as the ECM? Cause I have changed the ECM
     
    JWardrip, May 15, 2014
    JWardrip, May 15, 2014
    #8
    Ladytrukr Thanks this.
  11. May 15, 2014 #9
    freightrunner

    freightrunner Heavy Load Member

    722
    182
    Mar 25, 2012
    Georgia
    0
    Yea. I had my ecm changed and I guess they didn't program it right and it choked everytime in 8th gear but picked back up and I had it re-programmed and it worked fine.
     
    freightrunner, May 15, 2014
    freightrunner, May 15, 2014
    #9
    Ajadgill Thanks this.
  12. May 15, 2014 #10
    spyder7723

    spyder7723 Road Train Member

    15,467
    25,009
    Mar 31, 2013
    sarasota, fl
    0
    What gears is it showing power loss in? Is it only top side of the tranny? Only on hills with a heavy load on? Need more info from you to suggest anything.
     
    spyder7723, May 15, 2014
    spyder7723, May 15, 2014
    #10
    CellNet and Ladytrukr Thank this.
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