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Throttle sensor

Discussion in 'Trucks [ Eighteen Wheelers ]' started by Howard38, Feb 3, 2016.

  1. Feb 3, 2016 #1
    Howard38

    Howard38 Bobtail Member

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    Aug 26, 2015
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    I was driving down a highway and my pedal stop working.i have a n14 cummings in a 98 peterbuilt.put it on a computer and told I needed a new throttle sensor so I replaced it and still the same problem.the sensor has two bolts that bolt it to the pedal,but if I remove the bolts and turn the sensor counterclockwise the engine will throttle up like it is surpossed to but when I press the pedal I got nothing,I am just wondering if the pedal itself can go bad
     
    Howard38, Feb 3, 2016
    Howard38, Feb 3, 2016
    #1
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  3. Feb 3, 2016 #2
    Oxbow

    Oxbow Road Train Member

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    I don't know anything about drive by wire pedals, but I suppose it could have a rheostat sort of affair that the sensor reads?
     
    Oxbow, Feb 3, 2016
    Oxbow, Feb 3, 2016
    #2
  4. Feb 3, 2016 #3
    Howard38

    Howard38 Bobtail Member

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    Aug 26, 2015
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    I am still not sure if it has to be recalubrated r not because it it a new sensor
     
    Howard38, Feb 3, 2016
    Howard38, Feb 3, 2016
    #3
  5. Feb 3, 2016 #4
    Slowpoke KW

    Slowpoke KW Road Train Member

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    To check the pedal operation just remove the sensor and make sure the tab that operates the sensor moves when you push the pedal down. Assuming the sensor is mounted properly and making good connection at the plug I'm not sure what else there could be
     
    Slowpoke KW, Feb 3, 2016
    Slowpoke KW, Feb 3, 2016
    #4
  7. Feb 3, 2016 #5
    Slowpoke KW

    Slowpoke KW Road Train Member

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    That sensor is just a potentiometer to the best of my knowledge there is no calibration that can be done
     
    Slowpoke KW, Feb 3, 2016
    Slowpoke KW, Feb 3, 2016
    #5
  8. Feb 3, 2016 #6
    Cory wood

    Cory wood Medium Load Member

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    Nov 7, 2015
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    Sounds like the tab that the pedal actually turns has broken. If it's revving when you do it manually that has to be the problem. It's CUMMINS there is no such thing as a Cummings
     
    Cory wood, Feb 3, 2016
    Cory wood, Feb 3, 2016
    #6
    Slowpoke KW Thanks this.
  9. Feb 3, 2016 #7
    Bean Jr.

    Bean Jr. Road Train Member

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    It's in a Peterb(u)ilt, that's why!
     
    Bean Jr., Feb 3, 2016
    Bean Jr., Feb 3, 2016
    #7
    Slowpoke KW, SAR and Oxbow Thank this.
  10. Feb 3, 2016 #8
    Cory wood

    Cory wood Medium Load Member

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    Oh yeah that's what I was missing
     
    Cory wood, Feb 3, 2016
    Cory wood, Feb 3, 2016
    #8
    Oxbow Thanks this.
  11. Feb 4, 2016 #9
    boneebone

    boneebone Road Train Member

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    Yes, the Pedal can get "play" in it and the Sensor can not read it properly.

    I would replace the Pedal and your problem will be solved.

    Some Truck Manufactures sell the Pedal with a new Sensor included with it too.
     
    boneebone, Feb 4, 2016
    boneebone, Feb 4, 2016
    #9
    Oxbow Thanks this.
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