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    bigdaddy5422000's Avatar
    bigdaddy5422000 Posts: 1, Reputation: 1
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    #1

    Feb 21, 2010, 01:55 PM
    2000 pontiac Montana overheating after I changed waterpump and thermostat
    2000 pontiac Montana overheating after I changed waterpump and thermostat fan blower still runs it is blowing air but air is cold
    TxGreaseMonkey's Avatar
    TxGreaseMonkey Posts: 16,761, Reputation: 5597
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    #2

    Feb 21, 2010, 02:19 PM

    Replace the radiator. Phosphate scale is likely blocking the passages. Afterwards, refill with a 50/50 mixture of Dec-Cool and distilled water.
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