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mystery hose

Discussion in 'The Garage' started by vortec, Apr 26, 2005.

  1. vortec

    vortec 1/2 ton status

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    maybe someone can tell me what this is. in my '82 k5 5.7L, i found an open-ended hose hanging behind the brake pedal. same type hose as the larger vaccum lines underhood. it runs back behind the dash insulation, so i can't see if it passes through the firewall. i'll check under the hood better tomorrow when i have sun and no rain, hopefully. is it maybe a drain for a/c condensation? bad location, if so.
     
  2. TrcksR4ME

    TrcksR4ME 1/2 ton status

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  3. garlicbreath

    garlicbreath 1/2 ton status

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    Does it have vacuum with the truck running?
     
  4. loafer

    loafer 1/2 ton status

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    It might be for the cruise control, if you have/had cruise control.

    My 88' and 86' have a large vacuum hose that runs from cruise control actuator, up under the dash to the control module.
     
  5. dyeager535

    dyeager535 1 ton status Premium Member

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    Sounds like cruise to me. Usually goes through the firewall wrapped/taped together with the wires for the cruise control, if you have the electric cruise, and not the transducer on the driver side fender with the speedo cables going into/out of it.
     
  6. sweetk30

    sweetk30 professional hooker Premium Member

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    haha i removed my cruise and then had vac leak when brakes hit . i thaut i had a bad booster but was the hose sucking air.
     
  7. R72K5

    R72K5 Banned

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    definitely cruise brake switch hose
     
  8. vortec

    vortec 1/2 ton status

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    no vac with engine on. i do not have cruise control, to the best of my knowledge, unless they were really inconspicuous on these old trucks. no button for it or anything.
     
  9. TrcksR4ME

    TrcksR4ME 1/2 ton status

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    Mine was on the turn signal switch on the tip, just a small button on the end that is hardly noticeable...this is on a '77 btw.
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    '77 K5, Warn M8000, 402/350/203, 44/14bff, 4"/36" Irok's

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  10. dyeager535

    dyeager535 1 ton status Premium Member

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    And you can easily yank the cruise lever out and replace it with non cruise.
     

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