Thread: What hose is this? Jeep's sprung a leak!

  1. #1
    Join Date
    Nov 2010
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    Default What hose is this? Jeep's sprung a leak!

    It's the hose with the electrical tape bandage that got me home. I believe it's supposed to go to the heater? Not sure though. It doesn't look factory. Pictures are how it's routed. I'm thinking the previous owner did it as a fix to either a leaky core, or just because the climate control doesn't turn on low or high speed.

    If it just goes to the heater core, would I be safe to just cap them off somehow? That hose isn't working well, as it not only sprung a leak, I can feel it being worn through where it touches the valve cover.

    It's a 2.5 engine in a 1991 YJ in case y'all don't know.






    (crossposted on JEEPFORUM as well)

  2. #2
    Join Date
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    Generic heater hose. Yes, it used to go to your heater core. I'd guess the heater core started leaking, rather than fix it the previous owner by-passed it.
    Coan Racing/Dust Junkies Racing, 2012 Baja 1000 Class 1700 Champs
    Dust Junkies Racing/Fat City Racing, 2010 Baja 1000 Class 1700 Champs
    Fat City Racing/Dust Junkies Racing, 2009 Baja 1000 Class 1700 Champs

  3. #3
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    The question is, dare I just loop the hose, or fix the heater core?

    I thought that was what it was. I'll start seeing what's the better option. I don't think the fan speed control is working right now either.

  4. #4
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    Edit, might as well start fixing what needs fixing, no need to half *** it, i'll start with a new core and diagnose what's wrong with the fan control.

  5. #5
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    No harm in keeping the hose looped like that if a heater core isn't high on your list of priorities.
    Coan Racing/Dust Junkies Racing, 2012 Baja 1000 Class 1700 Champs
    Dust Junkies Racing/Fat City Racing, 2010 Baja 1000 Class 1700 Champs
    Fat City Racing/Dust Junkies Racing, 2009 Baja 1000 Class 1700 Champs

  6. #6
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    Bah, heaters are overrated....

  7. #7
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    ...except when it starts to SNOW
    Lloyd
    1975 DJ-5d "Dave, the project" w/20+ MPG
    1976 FJ40 "55 is Fine"

  8. #8
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    Dec 2005
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    Whats a heater?

  9. #9
    Join Date
    May 2010
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    Put a new 'loop' on it for now.

    The heater loop is also a bypass for when the T-stat is shut, so you don't want to just cap off the ends.

    XJ heater cores are a pain to change, plan on a full day for it.

  10. #10
    Join Date
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    XJ? I have a YJ. I've read it's an hour tops. I don't even have to pull out the old hoses from the core! :P

    Picked up a core and hoses today from the local parts store. I'll put it in this weekend. Then I can test drive it and see if anything else decided to spew Hulk Juice.

    It looked like the whole bottom of the water pump was leaking it's guts out!

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