Cruise control and jake brakes

Discussion in 'Trucks [ Eighteen Wheelers ]' started by Vio, Sep 3, 2019.

  1. Vio

    Vio Light Load Member

    150
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    Sep 25, 2012
    AZ
    0
    2014 ,386 Pete (glider with Detroit engine) , cruise control and jake brakes not working properly.Cruise control is cutting off , the same with jake on and off . I believe is some of the sensor ,
     
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  3. x1Heavy

    x1Heavy Road Train Member

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    White County, Arkansas
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    Take it to the shop.
     
  4. Vio

    Vio Light Load Member

    150
    67
    Sep 25, 2012
    AZ
    0
    Thanks for your help
     
  5. x1Heavy

    x1Heavy Road Train Member

    34,017
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    Mar 5, 2016
    White County, Arkansas
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    Literally take it to the shop.

    The reason being is that Jacobs in the engine generally is not a driver servicing item. The worst of it is either the fuse or the hammer to the relay box that fires the #### things. If you still have no jacobs, take it to the shop.

    Im sorry but they build trucks to be driver proof last I checked.
     
  6. Goodysnap

    Goodysnap Road Train Member

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    Jul 12, 2017
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    Brake pedal sticking and clutch pedal issue or clutch switch is most common. You need to hook up to see the response is correct for the appropriate switches in the ECM. Sometimes tapping on the side of or pulling up on each pedal will pinpoint the offender.........sometimes not.
     
    Vio, spsauerland, x1Heavy and 3 others Thank this.
  7. Claytonbigsby

    Claytonbigsby Bobtail Member

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    Mar 31, 2019
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    BF9CA780-15E7-457F-9F29-0AF98474BFD6.jpeg
    There’s your clutch pedal switch ^ it’s located outside on the drivers side under the floor, it’s about 1ft to the rear of your starter. The switch spring pushes on the clutch linkage to make it work.
    I believe the 2 wires in the harness have to make contact in order for the cruise to stay on. My cruise would randomly quit going down the road so I replaced the clutch switch and I never had an issue again
     
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  8. Vio

    Vio Light Load Member

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    Sep 25, 2012
    AZ
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    I replaced the clutch pedal switch, cruise and jake brakes , working again.
     
    x1Heavy and Goodysnap Thank this.
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