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Will a bad EGR valve hurt fuel mileage?

Discussion in 'Trucks [ Eighteen Wheelers ]' started by BAYOU, Dec 22, 2011.

Page 4 of 5
  1. Jan 31, 2012 #31
    BAYOU

    BAYOU Road Train Member

    2,847
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    Sep 23, 2010
    Beaumont,Tx
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    For $5,000 I will delete the egr all together
     
    BAYOU, Jan 31, 2012
    BAYOU, Jan 31, 2012
    #31
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  3. Feb 21, 2012 #32
    Dorsey

    Dorsey Medium Load Member

    412
    209
    Jan 28, 2012
    Florida
    0
    Did you ever figure out the problem?
     
    Dorsey, Feb 21, 2012
    Dorsey, Feb 21, 2012
    #32
  4. Feb 21, 2012 #33
    BAYOU

    BAYOU Road Train Member

    2,847
    1,592
    Sep 23, 2010
    Beaumont,Tx
    0
    no ant had the time to put it on the dyno when im ready they are not when there ready im 800 miles away thats my next thing
     
    BAYOU, Feb 21, 2012
    BAYOU, Feb 21, 2012
    #33
  5. Mar 23, 2012 #34
    BAYOU

    BAYOU Road Train Member

    2,847
    1,592
    Sep 23, 2010
    Beaumont,Tx
    0
    So time for the update:
    took the truck to do a dyno what a wast of money only thing i got out of that is the turbo only put 33lbs of boost max the engine codes that are on it sence the last time in the shop feb 17 is
    S147 VNT vanes not responding-boost jake has come on 18
    S147 VNT vanes not responding-boost power 44 times
    P110 Coolant temp sensor-input voltage high 78 times

    we also did the CAC leak down and after changing a few hose clamps its good now

    So what now? this is getting old
     
    BAYOU, Mar 23, 2012
    BAYOU, Mar 23, 2012
    #34
  7. Mar 24, 2012 #35
    US MARINE

    US MARINE Heavy Load Member

    823
    170
    Sep 15, 2011
    0
    This may sound stupid but mine did that once and I found a small whole in the blue hose on the Air to Air .... Replaced it ...

    Golden now !!
     
    US MARINE, Mar 24, 2012
    US MARINE, Mar 24, 2012
    #35
  8. Mar 27, 2012 #36
    Dorsey

    Dorsey Medium Load Member

    412
    209
    Jan 28, 2012
    Florida
    0
    Mine had that hiccup when I first bought the truck(it doesn't show it self bob tail). Replaced the turbo shortly after( along with other things) and the hiccup went away after replacing the turbo. A week or two later the hiccups come back and I've had shops look into it but they tell me everything is fine and I read this is a common problem in egr detroits so I give up and live with it. Fast forward a year and week later the turbo fails totally. Got the same readings you are getting about the VNT vanes not responding. Replaced the turbo and the hiccups are gone for about 2 months do far.
     
    Dorsey, Mar 27, 2012
    Dorsey, Mar 27, 2012
    #36
  9. Mar 27, 2012 #37
    Dorsey

    Dorsey Medium Load Member

    412
    209
    Jan 28, 2012
    Florida
    0


    Knock on wood!
     
    Dorsey, Mar 27, 2012
    Dorsey, Mar 27, 2012
    #37
  10. May 17, 2012 #38
    BAYOU

    BAYOU Road Train Member

    2,847
    1,592
    Sep 23, 2010
    Beaumont,Tx
    0
    When your truck did that did it roll smoke bad?
     
    BAYOU, May 17, 2012
    BAYOU, May 17, 2012
    #38
  11. May 18, 2012 #39
    ISF

    ISF Bobtail Member

    17
    1
    May 7, 2012
    0
    Hi Hotshot,

    There is only one solution for most EGR problems on older Engines.
    Stop wast your hard earned money and take it to dieselspec.ca
    they will take care of it.
    ISF
     
    ISF, May 18, 2012
    ISF, May 18, 2012
    #39
  12. May 18, 2012 #40
    texan007

    texan007 Medium Load Member

    526
    236
    Jun 5, 2010
    In the woods,TEXAS
    0
    Yes that is what it does throw waste exhaust into your engine.....how good can it be when new
     
    texan007, May 18, 2012
    texan007, May 18, 2012
    #40
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