check engine light

Discussion in 'Trucks [ Eighteen Wheelers ]' started by Builttuff, Nov 3, 2011.

  1. Builttuff

    Builttuff Bobtail Member

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    Sep 25, 2011
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    Check engine light came on. Stays on for seven seconds and goes off. No loss in power. Any ideas.
     
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  3. rogueunh

    rogueunh Road Train Member

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    How often is it doing this?
     
  4. Builttuff

    Builttuff Bobtail Member

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    Sep 25, 2011
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    When its running no matter what speed or anything.
     
  5. lovesthedrive

    lovesthedrive R.I.P.

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    Sorrento Maine
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    Is it doing it repeatedly? Or just when you first start out?
     
  6. rookietrucker

    rookietrucker Trucker Forum STAFF Staff Member

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    What's the year and make of the truck?
     
    bullhaulerswife Thanks this.
  7. Builttuff

    Builttuff Bobtail Member

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    Sep 25, 2011
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    05 Pete c 15. Does it all the time while running
     
  8. Mr. Haney

    Mr. Haney Road Train Member

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    You can get the flash code out of the ECM. Turn your ignition key to the on position. Leave the Cruise Control switch in the OFF position. Hold your SET button on the cruise control to the SET position for 3 seconds. Once you release the SET switch the Check Engine Light will begin to flash. Count the flashes, there will be a slight pause between the flashes

    ***** ***** this would be fault code 55

    Code 55 means that the engine is running normally, any other code is a problem. Go through this process to narrow down what the problem is and post the results
     
    KRAKAJACKJONSON and rookietrucker Thank this.
  9. PackRatTDI

    PackRatTDI Licensed to Ill

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    El Chuco, Tejas
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    My check engine light came on so many times due to the egr that the little bulb burned out!
     
  10. Builttuff

    Builttuff Bobtail Member

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    Sep 25, 2011
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  11. Builttuff

    Builttuff Bobtail Member

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    Sep 25, 2011
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    Turned out to be an oil pressure sending unit
     
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