Thread: Radiator Bomb

  1. #1
    JPNinPA's Avatar
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    Radiator Bomb

    Just sharing.
    So I stop on the way home to pick up dinner~7pm. I'm rolling up to the window and I hear the dash chime. Looking down I see the Check Gage's light on. So I scan and see the temp gage at 260. I could now smell the antifreeze and see the steam. I tell the girl at the window I need to move now so a let the clutch fly and Boom!


    It was like a bomb went off under the jeep. I felt it in the pedals and floorboards.

    The funny thing is !!!Boom!!! And Like a super zero, I roll off slowly from the cloud of steam. And the poor girl at the window had the poop scared out of her.

    The odd thing was there was no warning. Literally 30 sec between the chime and boom. I can't say I noticed the temp higher than normal lately. Nor can I say I looked at the gage on this ride until the chime went off. I thought of killing the engine immediately in the drive thru. But I figured I could get it into a parking spot quickly because it might not start back up. Was I wrong. Afterwards I had many offer help and were interested in what happened.

    I'm just glad the girl at the window wasn't hurt.

    Another funny is that radiator was clean. You don't often get to look down all the columns to see any buildup. I did today.

    So I guess it's time to take care of all the major and minor engine items. I rinsed off after toeing it home 9:30 and it's still hot.

    Here is the list:

    Radiator
    Hoses (bottom with spring)
    Water pump - never changed
    Thermo - 195 deg
    Belt -never changed
    And check the E-fan function


    Anyone have a recommendation on what else should be checked or replaced while I have the radiator, fan and water pump out of the way?






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    JPNinPA

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    Last edited by JPNinPA; 06-09-2017 at 09:12 PM.
    "Never look down on anybody unless you're helping him up" - Jesse Jackson

  2. #2
    k-2's Avatar
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    Re: Radiator Bomb

    which model and engine?

    Out of an abundance of caution check engine oil for coolant - easy quick.

    ADD radiator cap (pressure cap) to your list.
    Borrow a radiator pressure tester - cheek coolant press rise on restart - excess press could suggest head gasket They also make leak check easy

    Get a HD radiator an extra capacity (row) - for towing or upcountry money well spent

  3. #3
    k-2's Avatar
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    Re: Radiator Bomb

    To add maybe a trans cooler - But I think its a manual?

  4. #4
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    Radiator Bomb

    05 LJ 4.0 manual

    Thanks I will add the rad cap. I tried to remove it today and it is shot. Never saw one like this.

    Good idea on the checks of the oil and pressure.

    I'm actually staying with OE radiator as it faired well. I'm thinking the thermo failed closed or the water pump failed.
    JPNinPA
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    "Never look down on anybody unless you're helping him up" - Jesse Jackson

  5. #5
    k-2's Avatar
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    Re: Radiator Bomb

    please do the math* - this is an area where aftermarket is adequate, Modine, Valeo etc not the white box discount part stores


    *dealer vs radiator shop

  6. #6
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    Re: Radiator Bomb

    Try to get a metal radiator, also. I have had a few plastic ones come apart in the past
    almost done with all the yj stuff.

  7. #7
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    Radiator Bomb

    I have done the math and my homework. The radiator is like the sensors OEM is the best bet. It's ordered already and being shipped.
    https://www.wermopar.com

    Regards,
    JPNinPA

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    "Never look down on anybody unless you're helping him up" - Jesse Jackson

  8. #8
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    Re: Radiator Bomb

    Wow I've got one of those plastic radiators on 'BBB' I hope it doesn't blow like this!
    Last edited by Turbogus; 06-16-2017 at 09:15 AM.
    Quick fixes are so named for how long they stay fixed.
    If you run out of gas, no matter which way you decide to push, the closest gas station will always be uphill and in the other direction. Corollary: The likelihood of running out increases when all of the nearby gas stations are closed.
    The parts shop that stocks part for Skylab II will not have parts for our year/model of Jeep.
    We cannot accurately judge the trajectory of a speeding critter (cat, dog, sasquatch).

  9. #9
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    Radiator Bomb

    I've been traveling a lot over the month and finally got to replace parts. The water pump was fine but I replaced it anyway. The thermo is fine. So it looks like the pressure buildup was the radiator cap. The fluid on the expansion tank was the correct level and I had a hard time removing the cap.
    It also goes with what happened. No smell, steam or symptom prior to the rad exploding.


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    JPNinPA

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    "Never look down on anybody unless you're helping him up" - Jesse Jackson

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    Re: Radiator Bomb

    Today I swapped out the tensioner. Idler pulley belt and hoses. The radiator is back in. Lastly the fan.


    Regards,
    JPNinPA

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    "Never look down on anybody unless you're helping him up" - Jesse Jackson

  11. #11
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    Radiator Bomb

    All back together. Just need to change the oil now.



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    JPNinPA

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    Last edited by JPNinPA; 07-16-2017 at 06:47 AM.
    "Never look down on anybody unless you're helping him up" - Jesse Jackson

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