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2007 Dodge Magnum Question: Heater blowing cold air



wagner4psu, 2.7L V6, Oklahoma City, OK, December 27, 2009, 15:22

I had to put some stop leak in the radiator and suddenly the heater starting blowing only cold air. What might it be?

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  • Answer #1

    December 28, 2009, 17:26

    You may have plugged up the heater core, which is why some people recommend against using this stuff. Try flushing the heater core and see if it is plugged.

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