Kenworth Cruise control

Discussion in 'Trucks [ Eighteen Wheelers ]' started by Notiller12, Jan 10, 2026.

  1. Notiller12

    Notiller12 Bobtail Member

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    I have a 1997 kenworth t800 and the cruise control stopped working. Up above on the diagnostic reader the clutch switch is working but the brake switch isn’t which is causing it to not engage. Where is the brake sensor for the cruise control? Thanks
     
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  3. BoxCarKidd

    BoxCarKidd Road Train Member

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    Not sure but the older ones had some switches in the center of the dash.
     
    Diesel Dave Thanks this.
  4. AModelCat

    AModelCat Road Train Member

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    Since when does using the service brakes affect the operation of the jake? They operate independent of each other.
     
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  5. blairandgretchen

    blairandgretchen Road Train Member

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    I think he was talking about the cruise.
     
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  6. blairandgretchen

    blairandgretchen Road Train Member

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    I've got a 1995, and I think it's one of the air pressure switches on the aluminum manifolds on the floor behind the kick panels - activating the trolley valve also trips it.

    Grab a test light and poke at those air switches down there whilst pressing the brake pedal and see which one lights up.

    The clutch pedal should just be a button switch up on the pedal.

    That's all I got.
     
  7. AModelCat

    AModelCat Road Train Member

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    Apparently I need to learn to read. How did I miss that?
     
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  8. blairandgretchen

    blairandgretchen Road Train Member

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    I kinda giggled. I knew your brain went through a wiring circuit upgrade and spat out "JAKE" - I just didn't want to tell you to read a bit better :)
     
  9. AModelCat

    AModelCat Road Train Member

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    blairandgretchen Thanks this.
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