Thread: Antifreeze Leak

  1. #1
    navygm1's Avatar
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    Antifreeze Leak

    2006 Jeep Wrangler 4.0L
    I just replaced my stock radiator and thermostat. After I filled back up with antifreeze (G05 Zerk), ran it for a bit with heater on, I noticed a bunch of antifreeze on the ground. Got on the ground a nd looked up and saw fluid (antifreeze) leaking down. I assume that it is the weep hole on the water pump.

    My question is am I right in my assumption?

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    JPNinPA's Avatar
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    Antifreeze Leak

    Not necessarily.
    Why did you replace the thermo and radiator?
    Where was the leak coming from?
    If you didnít clean the old gasket off or if the thermo moved while installing you could have leak out of the bottom of the thermo housing.
    Iv also had the spring clamps go bad. So when it heats, it leaks. Or when the spring makes marks in the hose over time and isnít put back in the groove leaks happen.


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    Last edited by JPNinPA; 07-07-2019 at 05:08 PM.
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    Re: Antifreeze Leak

    Have you "burped" the system to remove air? It could be overflow due to the system not yet being fully purged or a too full system making room for expansion.

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    Re: Antifreeze Leak

    ^^agree^^


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    Re: Antifreeze Leak

    I replaced my radiator due to the plastic housing breaking and steam coming out. Replaced the stat for just encase.
    Water coming down from behind the harmonic balancer and across the front of the oil pan, so I assume the water is coming from the pump weep hole.
    Yes I burped, oh you mean did I burp the radiator?, yes.


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    Re: Antifreeze Leak

    Being you just changed the thermo. Take a flashlight and mirror and check the thermo housing and hose.
    I replaced a pump when it was the hose clamp. Where that is where the coolant was coming from.

    Also be sure you didnít crack the thermo housing by over tightening.


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    navygm1's Avatar
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    Re: Antifreeze Leak

    It was the water pump. Now no more leaks.


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    JPNinPA's Avatar
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    Re: Antifreeze Leak

    Glad you got it fixed! Strange it all (rad and pump) went bad around the same time.


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