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No engine brake and cruise control.

Discussion in 'Heavy Duty Diesel Truck Mechanics Forum' started by Ker, Mar 11, 2018.

Page 1 of 3
  1. Mar 11, 2018 #1
    Ker

    Ker Bobtail Member

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    I got Freightliner Century 2007 Detroit, my cruise control and engine brake are not working, I replaced clutch switch and speed sensor from the other truck that doesn't have any problem with these things and it didn't work. My cruise control is working only when idling , also-when idling nothing happens when i press clutch or brake pedal, rpms go down only when i release parking brake.
     
    Ker, Mar 11, 2018
    Ker, Mar 11, 2018
    #1
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  3. Mar 11, 2018 #2
    boneebone

    boneebone Road Train Member

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    Check brake pedal switch and/or accelerator pedal position switch.
     
    boneebone, Mar 11, 2018
    boneebone, Mar 11, 2018
    #2
    fss99701 Thanks this.
  4. Mar 11, 2018 #3
    Ker

    Ker Bobtail Member

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    I'll do that,thank you.
     
    Ker, Mar 11, 2018
    Ker, Mar 11, 2018
    #3
  5. Mar 11, 2018 #4
    Ker

    Ker Bobtail Member

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    Are they located on pedals , (same as clutch switch) ?
     
    Ker, Mar 11, 2018
    Ker, Mar 11, 2018
    #4
  7. Mar 11, 2018 #5
    boneebone

    boneebone Road Train Member

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    The accelerator pedal position sensor should be on the pedal, not too sure about the brake pedal.

    Also check that the clutch pedal return spring is not broken, when it's broken, your clutch pedal doesn't go back up all the way, so it will keep the cruise control from working.
     
    boneebone, Mar 11, 2018
    boneebone, Mar 11, 2018
    #5
    QuietStorm Thanks this.
  8. Mar 12, 2018 #6
    little cat 500

    little cat 500 Road Train Member

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    could be the relay my freightliner the relay went bad took out the cruz and jake
     
    little cat 500, Mar 12, 2018
    little cat 500, Mar 12, 2018
    #6
  9. Mar 16, 2018 #7
    Ker

    Ker Bobtail Member

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    Problem solved . I feel embarrassed to say what it was . Clutch switch jack that connects with the cable which is going from computer was disconnected.
     
    Ker, Mar 16, 2018
    Ker, Mar 16, 2018
    #7
    Big_Z, fss99701, ShooterK2 and 1 other person Thank this.
  10. Mar 17, 2018 #8
    boneebone

    boneebone Road Train Member

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    At least it's fixed.

    There's no need to feel embarrassed, sometimes if you don't ask a question, you won't get the answers and the motivation to look for or fix the problem.
     
    boneebone, Mar 17, 2018
    boneebone, Mar 17, 2018
    #8
    JoeyJunk, fss99701 and Justrucking2 Thank this.
  11. Mar 17, 2018 #9
    ShooterK2

    ShooterK2 Road Train Member

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    90 percent of drivers would have had it in the shop, spending a week’s pay to fix that. You did just fine.
     
    ShooterK2, Mar 17, 2018
    ShooterK2, Mar 17, 2018
    #9
    JoeyJunk, HopeOverMope and Justrucking2 Thank this.
  12. Mar 17, 2018 #10
    Ker

    Ker Bobtail Member

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    Thank you for giving away your knowledge and time.
     
    Ker, Mar 17, 2018
    Ker, Mar 17, 2018
    #10
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