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freightliner with mll help

Discussion in 'Trucks [ Eighteen Wheelers ]' started by earthmover, Sep 9, 2009.

Page 1 of 2
  1. Sep 9, 2009 #1
    earthmover

    earthmover Medium Load Member

    563
    20
    Jan 27, 2009
    castalia , north carolina
    0
    hey guys I have a crazy problem that just came about I worked wed. night last week and got the truck home thur. for a little clean up and to check it over it rained and didnt not touch it until mon. it started just fine was backing up and the motor just die down and stop eng light was on light went out ran fine let it run for a while and samething motor goes down and light is on then motor comes back up light goes out...so I drive the truck down the road and it only goes to about 1500 no more and wont pull and harder back home and look around change fuel filter thinking maybe thats it same thing but it just comes and goes..motor die down never cuts off just comes back up and light goes out...what gives ...need to be at work its getting close to the bad mths for me....:biggrin_25518:
     
    earthmover, Sep 9, 2009
    earthmover, Sep 9, 2009
    #1
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  3. Sep 9, 2009 #2
    BrainHurtz

    BrainHurtz Light Load Member

    245
    57
    Jun 24, 2008
    Terre Haute, In
    0
    Well there are some things that could help people in answering your question:

    What are the gauges saying when it happens? Anything dropping to zero or pegging?

    You can also go through the engine bay and start checking connections, maybe you just have a lose one on a sensor. Because you mentioned rain see if water is down in a connector.

    The behavior you're describing now is pretty much exactly what the engine protection features of most electronic engines do these days so I'm going to assume the engine protection feature is kicking in which could be any number of items such as oil pressure, temperature, etc. So you could actually have low oil or coolant, or just a bad sensor. If its a 2007 emissions level engine maybe the DPF is clogged?

    The easiest thing to do is get it into a shop and have them plug in.
     
    BrainHurtz, Sep 9, 2009
    BrainHurtz, Sep 9, 2009
    #2
  4. Sep 9, 2009 #3
    earthmover

    earthmover Medium Load Member

    563
    20
    Jan 27, 2009
    castalia , north carolina
    0
    the truck is 1997 freightliner with a cummins mll..
    the gauges never move thay stay just like they should I thought maybe a bad conn. from batt. turn everything on ac/lights/fans/heat mirr everything no drop in volt. the thing is it just does it from time to time not steedy it'' drop down and run for 2/3min then just come back on...its not the sut down light its the stop eng light...oil press. is fine its full and temp has nothing to do with it cause it does it even when I just start it up thanks for your reply.....
     
    earthmover, Sep 9, 2009
    earthmover, Sep 9, 2009
    #3
  5. Sep 10, 2009 #4
    Heavyd

    Heavyd Road Train Member

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    Feb 4, 2009
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    Ok, your going to have to get the fault codes out of it, no if and or buts about it. If not you are just going to chase your tail and waste a lot of time.
     
    Heavyd, Sep 10, 2009
    Heavyd, Sep 10, 2009
    #4
  7. Sep 10, 2009 #5
    PharmPhailPartsReplacer

    PharmPhailPartsReplacer Not to be confused with DinosPartsReplacer

    128
    433
    Sep 7, 2009
    0
    Check your coolant level and sensor.
     
    PharmPhailPartsReplacer, Sep 10, 2009
    PharmPhailPartsReplacer, Sep 10, 2009
    #5
  8. Sep 10, 2009 #6
    earthmover

    earthmover Medium Load Member

    563
    20
    Jan 27, 2009
    castalia , north carolina
    0
    hay guys on this truck i have a little digital help box called road relay it has never changed since I had this truck almost 3yrs anyway today I m playing with it and on the maint. scene it reads inj1@the bottom its normal and does this for all inj then it say reserved bad device s00/f12.... can some one tell me how to work this and maybe reset stuff like oil change and trip info thats full also :biggrin_25524:
     
    earthmover, Sep 10, 2009
    earthmover, Sep 10, 2009
    #6
  9. Sep 11, 2009 #7
    Heavyd

    Heavyd Road Train Member

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    Heavyd, Sep 11, 2009
    Heavyd, Sep 11, 2009
    #7
  10. Sep 12, 2009 #8
    earthmover

    earthmover Medium Load Member

    563
    20
    Jan 27, 2009
    castalia , north carolina
    0
    hey guys I have leaned something new today about my truck it has a switch on it that has eng.check..now I switched it on and I got the codes for the truck it came out as code 343 and code 321 does that mean I need a new ecm???? or can some on:biggrin_2556:e tell me what I need to do...thanks
     
    earthmover, Sep 12, 2009
    earthmover, Sep 12, 2009
    #8
  11. Sep 13, 2009 #9
    Heavyd

    Heavyd Road Train Member

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    343 is an internal error in the ECM. The fault processor monitors the output of the injectors and communicates any faults to the main ECM processor. This code can be caused by electrical noise outside the engine. A faulty alternator, bad, or intermittent grounds, water intrusion into the ECM, water in connectors, loose connectors can cause this code.

    321 ECM has detected voltage returning from injector #4 when the ECM isn't powering #4. This is usually a short in the injector harness either outside the engine or under the rocker cover. ECM will derate the engine and limit RPM to 1400. Basically inspect for wires rubbed through.
     
    Heavyd, Sep 13, 2009
    Heavyd, Sep 13, 2009
    #9
  12. Aug 21, 2011 #10
    xsetra

    xsetra Road Train Member

    5,183
    7,123
    Aug 21, 2011
    0
    How or where can I find a list of fault codes. I have a 99 Freightliner with a Cummins N14. Road Relay reads. 2R5004, 1LS001, 2S015. Thanks
     
    xsetra, Aug 21, 2011
    xsetra, Aug 21, 2011
    #10
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