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CAT C15 losing power

Discussion in 'Trucks [ Eighteen Wheelers ]' started by MinniesB, Aug 30, 2016.

  1. Aug 30, 2016 #1
    MinniesB

    MinniesB Light Load Member

    90
    37
    Sep 16, 2012
    Poplar Bluff, MO
    0
    I have an 07 Pete 379 with a CAT C15. Getting a check engine light with fault code 285-7. It only comes on after I take off and been on the road for about 10-15 minutes. Sometimes it'll stay on for 15 -20 seconds and other times it'll be 20 -30 minutes. It'll come on and go off 3 - 4 times a day. But when I shut the truck off and start it again the engine code is gone. I'm guessing maybe a bad or loose wire in the harness maybe?
     
    MinniesB, Aug 30, 2016
    MinniesB, Aug 30, 2016
    #1
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  3. Aug 30, 2016 #2
    WrenchWrenchWrench

    WrenchWrenchWrench Light Load Member

    131
    118
    Jan 3, 2016
    0
    IVA solenoid not responding on cyl. 1. Most likely a loose wire or connection, if you don't see anything obvious in the harness from the ecm up into the rocker box take off the front valve cover and see if the connector is loose at the IVA solenoid for cyl. 1. Cat makes a new pigtail you can crimp in because the problem is so common. If that's not it then you could have a bad solenoid or mechanical problem in the IVA housing.
     
    WrenchWrenchWrench, Aug 30, 2016
    WrenchWrenchWrench, Aug 30, 2016
    #2
    MinniesB Thanks this.
  4. Aug 30, 2016 #3
    MinniesB

    MinniesB Light Load Member

    90
    37
    Sep 16, 2012
    Poplar Bluff, MO
    0
    If I take the front valve cover off will I have to replace the gasket?
     
    MinniesB, Aug 30, 2016
    MinniesB, Aug 30, 2016
    #3
  5. Aug 30, 2016 #4
    maggard359

    maggard359 Medium Load Member

    476
    413
    Nov 20, 2013
    Florida
    0
    No, it is reuseable by my guidelines.
     
    maggard359, Aug 30, 2016
    maggard359, Aug 30, 2016
    #4
    MinniesB Thanks this.
  7. Aug 30, 2016 #5
    MinniesB

    MinniesB Light Load Member

    90
    37
    Sep 16, 2012
    Poplar Bluff, MO
    0
    There are 3 pigtails the middle on has 2 wires blue and red. The red one seems to have a splot in plastic coating on the wire. Will that cause the issue?
     

    Attached Files:

    MinniesB, Aug 30, 2016
    MinniesB, Aug 30, 2016
    #5
  8. Aug 30, 2016 #6
    WrenchWrenchWrench

    WrenchWrenchWrench Light Load Member

    131
    118
    Jan 3, 2016
    0
    No thats your jake brakes, but definitely fix that too. Your #1 iva is the one all the way up front.
     
    WrenchWrenchWrench, Aug 30, 2016
    WrenchWrenchWrench, Aug 30, 2016
    #6
    MinniesB Thanks this.
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