1999 Mercury Station Wagon No heat, only blowing cool air

1999 MERCURY SABLE STATION WAGON
950,000 MILES • 6 CYL • 2WD • AUTOMATIC
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RAIN19
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  • 1 POST
My heater only blows cool air. I can hear the fan running. No leaks under the dash board. Any advice?
Nov 26, 2009 at 8:13 PM
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RASMATAZ
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  • 75,992 POSTS
Check the thermostat could be stuck open and heater core clogged-up and coolant level.
Nov 26, 2009 at 9:20 PM