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a little coolant problem

Discussion in 'Intermediate CJ-5/6/7/8' started by Sac26, Jul 26, 2008.

  1. Jul 26, 2008
    Sac26

    Sac26 New Member

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    Nov 14, 2005
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    just installed new 3 core heavy duty radiator with new hoses and using a pusher electric fan. Here it goes, i had the jeep idling making sure nothing was leaking from the jeep. (electric fan not hooked up) i checked inside the radiator to make sure coolant was being moved through the radiator well after about 4-5 min it started to boil over. now here is the question. could it be that my new radiator hoses have a slight kink in them or be that the fan is not hooked up and it overheated that way? Reason i ask is cause im not to knowledgeable about this!
     
    Sac26, Jul 26, 2008
    #1
  2. Jul 26, 2008
    73cj5

    73cj5 Member

    Maine
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    Re: alittle coolant problem

    hooking up the fan may help!
     
    73cj5, Jul 26, 2008
    #2
  3. Jul 26, 2008
    Sac26

    Sac26 New Member

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    Re: alittle coolant problem

    well i didnt figure that letting the jeep idle for approx 4-5 min would need a fan to keep it from overheating. Since the coolant is very hot i do have good flow im just wondering if its because of the radiator hoses
     
    Sac26, Jul 26, 2008
    #3
  4. Jul 26, 2008
    Patrick

    Patrick Super Moderator Staff Member

    Los Alamos, NM
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    Re: alittle coolant problem

    I'd start by hooking up the fan.
    Sounds like there could have been air in the system as well....
     
    Patrick, Jul 26, 2008
    #4
  5. Jul 27, 2008
    Walt Couch

    Walt Couch sidehill Cordele, Ga. 2024 Sponsor 2023 Sponsor 2022 Sponsor

    cordele, Ga.
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    Re: alittle coolant problem

    For the water to boil, it has to get heat from the engine. As you observed, the water is swerling in the top of the tank. That should indicate the water is circulaing thru the radiator/hoses/waterpump and engine. Indications now is quantity? As stated above--air in system-- bad T-stat--partially collapsed hoses.
     
    Walt Couch, Jul 27, 2008
    #5
  6. Jul 27, 2008
    bkd

    bkd Moderator Supreme Staff Member 2022 Sponsor

    K-Town Tenn.
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    Re: alittle coolant problem

    did you drill a 1/8" hole into the flange of the Tstat?.....mine did what you've described until I drilled the hole allowing all the air to burp out. HTH
    JIm S.
     
    bkd, Jul 27, 2008
    #6
  7. Jul 27, 2008
    Sac26

    Sac26 New Member

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    Re: alittle coolant problem

    no never drilled any type of hole... i will defiinitely try that today and yes the hoses look partially collasped. The parts store didnt have the old style hoses with the metal rings inside so i just have the regular rubber hoses.
     
    Sac26, Jul 27, 2008
    #7
  8. Jul 27, 2008
    timgr

    timgr We stand on the shoulders of giants. 2022 Sponsor

    Medford Mass USA
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    Re: alittle coolant problem

    A plain rubber hose used as a bottom hose will collapse. Usually bottom hoses come with a separate spring inside them to stop them from collapsing. Either that, or flex hoses have a spring integral to them that lets them be used on the top or bottom.

    If the parts store sold you a bottom hose without the spring, they sold you the wrong part.
     
    timgr, Jul 27, 2008
    #8
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