Question about 2003 Mercury Grand Marquis

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2003 Grand Marquis

Not receiving air through vent channel. AC works good, air only comes through floor and DEF. Please advise.

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  • Anonymous Jul 09, 2008

    same problem...

  • Anonymous Apr 22, 2009

    HOW TO REPLACE OR LOCATE THE AC ACUATOR ON A 1999 MERCURY GRAND MARQUIS

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Check if the ac vent is blocked or the switch may in off position ,or selected the AC position on the ac control.....if does not help get it checked by the service center..............

Posted on May 29, 2008

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2007 merc grand marquis heater air comes out all of the vents and very little out of the defrost vents


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AC will not come out the dash vents all the time. Can lower the fan speed really low and they will sometimes switch back to the dash. All air is coming out the defrost vent.


my ac vent only comes out of the defroster and the floor i replaced the vent door accuator but that didnt work what could be the problem 2004 gand marquise

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Air conditioner


About to have the same thing repaired or diagnosed today. I'll let you know

Jul 25, 2008 | 2003 Mercury Grand Marquis

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