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Thread: Faulty aircon = coolant leak = overheating?

  1. #21
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    I've been thinking about this problem of yours and it's got my stuffed. ..

    I could imagine turning the ac on it would put more thermal stress on the coming system; but yours doesn't seem to be doing that. ..

    By deduction the face, screen, floor sir vent setting couldn't possibly make a difference.

    What were the settings when it was leaking, and what are they now? We're you using the auto setting or ac off buttons at all?

    It's a common myth that blocked cabin filters causes the blower motors to work harder, more amperage, more heat etc. However in testing the opposite is true. A blocked air intake makes it easier on the fan. So it doesn't actually cause any problems except poor performance.

    Sent from my GT-I9305T using AULRO mobile app

  2. #22
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    I never really used the Auto setting but did regularly use the A/C off button. That's the only button I haven't tried again. Changed the blowers and still fine, no faults.

  3. #23
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    Funny i'm reading this post, as i've experienced a similar issue going up Mt Donna Buang today.

    By the time i got up to Mountain turn off about a third of the way up, she overheated. It seems to me that either the Radiator cap is possibly faulty as i've had for nearly 3 years and seems to prematurely release the coolant under what appears to be the normal pressure. I'm thinking possibly the fan clutch could be cactus, as again it only overheats when the engine is under load going uphill. The Radiator is vitually new, about a year old

    Could it also be the thermostat? Or could it be the Nulon Radiator stop leak causing this when i detected the leak in the heator core elbow?

    Sorry, don't mean to hijack the thread or anything, just a similar problem.

  4. #24
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    Andy,

    The cap would be a good place to start if it leaks fluid under pressure.

    You can test the fan clutch by holding some newspaper in it but I think this is a better way before you use the newspaper

    how to test a visco fan clutch - Pelican Parts Technical BBS

    Good luck

    Steve

  5. #25
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    Hi

    A thread here with some suggestions for overheating

    Help Overheating

    Steve

  6. #26
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    Another thing. Should there be like a chemical smell come out of the expansion tank when you turn the cap and release the pressure when cold?

  7. #27
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    Quote Originally Posted by redandy3575 View Post
    Another thing. Should there be like a chemical smell come out of the expansion tank when you turn the cap and release the pressure when cold?
    Hi

    I don't think so but it depends on the coolant you are using I would imagine

    I use the Burson Brand OATS coolant and there is a very faint chlorine like smell when I open the tank, not strong at all

    Steve

  8. #28
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    Hi

    Another thing which happened to me was I had problems with my old cap so I bought a new cap, britpart .

    It leaked coolant fairly badly, so I bought another one, AllMakes, after a week or so one of the little tabs which hold the plunger in broke

    So i bought a genuine cap and it still leaked though not as bad

    In the end I replaced the expansion tank with a new Britpart one and it all seems to have settled down, I hope !

    Steve

  9. #29
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    Quote Originally Posted by SteveFarmer View Post
    Hi

    Another thing which happened to me was I had problems with my old cap so I bought a new cap, britpart .

    It leaked coolant fairly badly, so I bought another one, AllMakes, after a week or so one of the little tabs which hold the plunger in broke

    So i bought a genuine cap and it still leaked though not as bad

    In the end I replaced the expansion tank with a new Britpart one and it all seems to have settled down, I hope !

    Steve
    Yeah, i've ordered a new cap today. I'm thinking maybe the expansion tank might need to be replaced too as the cap after checking today seems to screw on somewhat crooket.

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