Question about 2003 Mercury Grand Marquis

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Heater wont come on.

When I turn my heater on , only thing that I hear is a clunk like if it trying to click on but nothing comes on , same thing with aircondition and defrost none of these this come on .. could it be a fuse problem by any chance .. this happened a few months ago when it did the same thing but than it started working on itts on about 3 weeks later .. help! I have a 2003 mercury grand marquis

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  • general05 Apr 08, 2009

    I have a 2000 Grand Marquis, same thing, heater or airconditioner. Can hear the clicking, acts up sporadically. I've replaced the invironmental control module last month, it did it again today. Drove it 2 times wouldn't work. Started up after lunch blower started blowing again, confused?

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Sounds like the vent flap is stuck

Posted on Jan 24, 2009

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