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Help with M11 Cummins

Discussion in 'Trucks [ Eighteen Wheelers ]' started by wharsanyi, Feb 9, 2011.

Page 1 of 2
  1. Feb 9, 2011 #1
    wharsanyi

    wharsanyi Bobtail Member

    3
    0
    Feb 9, 2011
    Spring Hill, Fl.
    0
    need help with M11 Cummins cutting out. No ecm codes. Has Allison 740 trans, Can powerbrake truck with no problems but as soon as the truck moves forward the engine cuts out intermittently but does not stall. Idles good,can powerbrake all day long with no problem.Changed VSS with no change. Rewired VSS to ECM directly with no change. Looking for some help on where to go next.
     
    wharsanyi, Feb 9, 2011
    wharsanyi, Feb 9, 2011
    #1
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  3. Feb 9, 2011 #2
    Pablo-UA

    Pablo-UA Road Train Member

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    1,642
    Oct 11, 2010
    Borispol, Ukraine
    0
    i sugest itermediate ign. power wire cut off. Engine stalls...
    Do you have stored codes in tranny controll unit, ABS unit?

    Is it Celect ore Celect+ controll unit? what year?
     
    Pablo-UA, Feb 9, 2011
    Pablo-UA, Feb 9, 2011
    #2
  4. Feb 9, 2011 #3
    wharsanyi

    wharsanyi Bobtail Member

    3
    0
    Feb 9, 2011
    Spring Hill, Fl.
    0
    1995 Osh Kosh S-Series , No Trans ECU it is a 740 Allison , no codes, Celect ECM,
     
    wharsanyi, Feb 9, 2011
    wharsanyi, Feb 9, 2011
    #3
  5. Feb 9, 2011 #4
    Pablo-UA

    Pablo-UA Road Train Member

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    Oct 11, 2010
    Borispol, Ukraine
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    Ok, start with ign. circuit, and check fuel pressure too. But I sugest it is wiring issue
     
    Pablo-UA, Feb 9, 2011
    Pablo-UA, Feb 9, 2011
    #4
  7. Feb 10, 2011 #5
    wharsanyi

    wharsanyi Bobtail Member

    3
    0
    Feb 9, 2011
    Spring Hill, Fl.
    0
    why do you think that it only happens when truck is moving? we put it on jack stands and ran it standing still with driveline moving and same result so i don't think it is fuel. thought it may have been in vss harness to ecm but hardwired that and same result.same result while unplugging vss. strange thing is that we got no codes while unplugging vss. also took ecm from another matching truck same year with same ecm parameters and same result.
     
    wharsanyi, Feb 10, 2011
    wharsanyi, Feb 10, 2011
    #5
  8. Feb 10, 2011 #6
    Pablo-UA

    Pablo-UA Road Train Member

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    Oct 11, 2010
    Borispol, Ukraine
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    so use Cummins Insite software to be sure.

    Well, it may be output shaft bearing play.
     
    Pablo-UA, Feb 10, 2011
    Pablo-UA, Feb 10, 2011
    #6
  9. Feb 10, 2011 #7
    Big_Red_Machine

    Big_Red_Machine Bobtail Member

    11
    1
    Feb 10, 2011
    Open road
    0
    I know you guys don't think its fuel but have you actually thrown a gauge on it and checked? The M11 does not have a fuel pressure sensor so it will never set a fault code for fuel pressure. It would be beneficial in my opinion to throw a gauge on it and check fuel pressure and inlet restriction.
     
    Big_Red_Machine, Feb 10, 2011
    Big_Red_Machine, Feb 10, 2011
    #7
  10. Feb 11, 2011 #8
    Pablo-UA

    Pablo-UA Road Train Member

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    Oct 11, 2010
    Borispol, Ukraine
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    Good idea. I had an idea to ad fuel pressure sensor and to install gauge in cabine
     
    Pablo-UA, Feb 11, 2011
    Pablo-UA, Feb 11, 2011
    #8
  11. Feb 16, 2011 #9
    AUSSIE DAVE

    AUSSIE DAVE Road Train Member

    1,032
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    Feb 21, 2010
    OZ - Brisbane
    0
    just my two cents have you checked the fuel soleniod / wire
     
    AUSSIE DAVE, Feb 16, 2011
    AUSSIE DAVE, Feb 16, 2011
    #9
  12. Mar 23, 2018 #10
    sukhr73

    sukhr73 Bobtail Member

    1
    0
    Mar 23, 2018
    0
    My truck was in start mode and ready to leave oil change shop, was then offered battery check. They sparked while performing battery check. Now I am facing ECM and Battery bill. Can one proof the shops errors???? Please reply
     
    sukhr73, Mar 23, 2018
    sukhr73, Mar 23, 2018
    #10
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