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Thread: Small coolant leak

  1. 19th April 2012, 08:16 AM #1
    Mundy
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    Small coolant leak

    Occasionally I get a whiff of coolant inside the cabin. There are no leaks that can be seen in the engine bay and a recent pressure test didn't reveal a problem. I don't have any wet carpet or any coolant leak under the car (that I can tell given the normal condensation pool). I understand that there's no hot water valve in the heater system so its not from that. I can't understand why I only smell it every now and again. I am wondering where I should look - does anyone have any suggestions?

    Mundy
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  2. 19th April 2012, 08:26 AM #2
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    AussieAub
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    Definitely coolant and not window washer fluid?
    I can usually smell washer fluid inside the cabin when I use the windscreen jets.

    Just a thought.....
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  3. 19th April 2012, 10:15 AM #3
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    Judo
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    If it's definitely coolant, it almost has to be the heater core doesn't it?
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  4. 19th April 2012, 02:06 PM #4
    It'sNotWorthComplaining! Guest
    I had hot coolant smell coming into the cabin, it was a leaking hed rear welsh plug, the oat was seeping out of it. V8 Disco2.
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  5. 19th April 2012, 06:30 PM #5
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    Marmoset
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    I'd suggest heater matrix or o rings to the heater matrix hoses. I've had plenty of coolant leaks that I can smell as soon as I'm out of the car but none have been evident when I'm inside it.

    Rich
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  6. 20th April 2012, 08:39 AM #6
    Mundy
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    Thanks for the responses, guys. There's no coolant smell outside the cabin, only in and only occasionally. I'm sure its not window washer fluid. I'm half way into installing a T2 combo engine saver and will see if there's a correlation between temperature (and hence pressure) and the scent. If so, its in the heater system somewhere and presumably a very small weep that only occurs when the pressure is highest.

    I could pull the console and heater system apart but I wanted to avoid being like the guy on the SuperCheap ad trying to find the rattle.
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  7. 20th April 2012, 11:49 AM #7
    biggin
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    Check that your A/C bleeds aren't blocked.
    When mine were, it smelt a bit like coolant.
    2002 D2 4.6L V8 Auto SLS+2" ACE CDL Truetrac(F) Nanocom(V8 only)
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