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Sterling roll-off issues

Discussion in 'Heavy Duty Diesel Truck Mechanics Forum' started by Shadow7, Oct 11, 2018.

  1. Oct 11, 2018 #1
    Shadow7

    Shadow7 Bobtail Member

    1
    0
    Oct 11, 2018
    0
    I had a fault code on my sterling truck that read Icu 140 and then No EG, 1_2.1 and I had lost all power to the truck. I had no accelerator and no power steering as well as the engine shut off. When I tried to restart it it would crank but not turn over all the way. When I had it towed back to our depot and it was still hooked I tried to start it again and it started. After taking it to the mechanic, they mentioned that they didn't find any type of code on the truck at all. I didn't make it up so I know there is something wrong with the truck. After having it a few days they're telling me that they've traced all the wires and haven't really found anything wrong with the truck. Can anyone shed some light on this?
     
    Shadow7, Oct 11, 2018
    Shadow7, Oct 11, 2018
    #1
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  3. Oct 12, 2018 #2
    JohnC123

    JohnC123 Light Load Member

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    Jan 25, 2018
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    Don't have any truck specifics but this is the way I look at an "incident" such as this, the code ICU 140 *** is an Instrument Control Unit mid designation that probably confirms loss of system electrical power, the fact that the engine quit. These newer trucks are "Electric Trucks" that need 12 volts to operate, SOMETHING caused you to lose main battery voltage somewhere and maybe the mechanic by virtue of simply checking battery cables, fuses, relays or unplugging and re-plugging connections, corrected this condition unknowingly which is what he is supposed to do in this instance, its fixed many a truck...
     
    JohnC123, Oct 12, 2018
    JohnC123, Oct 12, 2018
    #2
    Cam Roberts Thanks this.
  4. Oct 12, 2018 #3
    Cam Roberts

    Cam Roberts Road Train Member

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    May 13, 2018
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    Definitely look for a fuse between the computer and the battery it is connected to. This will shut truck off it it gets a little corroded. A bump in the road could do it.
     
    Cam Roberts, Oct 12, 2018
    Cam Roberts, Oct 12, 2018
    #3
  6. Mar 31, 2022 #5
    ColumbiaBoB

    ColumbiaBoB Light Load Member

    188
    21
    May 3, 2011
    Des Moines, IA
    0
    Im digging this MOFO from the grave. I have 05 columbia and the same thing happened to me today. Looked everywhere, changed fuel filter i thought it got plugged, and then went to my battery box and moved negative cable and little fuse, and what do you know, SOB started right up. I have this truck since 2011 never had this issue before. Got to keep those connections clean.
     
    ColumbiaBoB, Mar 31, 2022
    ColumbiaBoB, Mar 31, 2022
    #5
  8. Mar 31, 2022 #5
    aussiejosh

    aussiejosh Road Train Member

    4,759
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    Aug 28, 2009
    Airlie Beach QLd
    0
    With the newer version of trucks all being computerized, sometimes a computer malfunction can cause an issue, if this is the case, try doing this, switch the engine off wait a few minutes, then switch off the power isolation switch leave it off for a lest 3 minutes switch it back on then try starting it this will allow the computer to reboot and sometimes can resolve an issue even temporarily till you can get the workshop to look at it
     
    aussiejosh, Mar 31, 2022
    aussiejosh, Mar 31, 2022
    #5
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