2004 Grand Marquis Blen Door Changed But Still Blowing Hot Air

Asked by May 01, 2017 at 12:23 AM about the 2004 Mercury Grand Marquis

Question type: Maintenance & Repair

Car was blowing hot air when on cold setting so after
some research everything pointed towards the blend door
actuater. So after some painstaking effort we put in a new
one, but nothing has changed. In the past resetting the
car by removing the battery used to fix the issue, so if the
rest works now then the problem is some place else. Any
thoughts what the issue could be?

3 Answers

10,490

the actuator is controlled through the selector switch ,, if the sw were taken apart you would see it's both vacuum and electric ... overy time the o rings sometimes fail to seal the position you want and that prevents the vacuum from moving the actuator

52,655

The o'rings mentioned above can be replaced if you can figure out which ones to use.

10,490

You need the good O rings with the hole in the center... just joking but depending on where you live the summer heat can be brutal over a period of years to those rings. Most Home Depot have a large selection of rings .. just bring one in to size ... my GP only had one that was different then the others ... keep in mind that you may need a marker to mark the way it is reassembled correctly

Your Answer

Grand Marquis

Looking for a Used Grand Marquis in your area?

CarGurus has 1,731 nationwide Grand Marquis listings starting at $1,000.

ZIP:

Mercury Grand Marquis Experts

  • #1
    Tracy Hooks
    Reputation
    5,780
  • #2
    kbro
    Reputation
    2,150
  • #3
    Js08016
    Reputation
    1,880
View All

Related Models For Sale

Used Lincoln Town Car
48 Great Deals out of 1,751 listings starting at $1,000
Used Ford Crown Victoria
5 Great Deals out of 1,189 listings starting at $1,496
Used Chevrolet Impala
533 Great Deals out of 35,327 listings starting at $900
Used Ford F-150
2,578 Great Deals out of 197,073 listings starting at $1,300
Used Ford Mustang
609 Great Deals out of 36,332 listings starting at $899
Used Chevrolet Tahoe
734 Great Deals out of 41,543 listings starting at $1,995
Used Chrysler 300
312 Great Deals out of 18,078 listings starting at $990
Used Cadillac DeVille
1,560 listings starting at $2,995
Used Ford Taurus
190 Great Deals out of 15,897 listings starting at $1,850
Used Buick LeSabre
15 Great Deals out of 1,757 listings starting at $750

Used Cars For Sale

2011 Mercury Grand Marquis For Sale
23 listings starting at $5,450
2010 Mercury Grand Marquis For Sale
4 Great Deals out of 90 listings starting at $4,795
2009 Mercury Grand Marquis For Sale
7 Great Deals out of 90 listings starting at $2,599
2008 Mercury Grand Marquis For Sale
7 Great Deals out of 150 listings starting at $2,790
2007 Mercury Grand Marquis For Sale
6 Great Deals out of 130 listings starting at $1,995

Content submitted by Users is not endorsed by CarGurus, does not express the opinions of CarGurus, and should not be considered reviewed, screened, or approved by CarGurus. Please refer to CarGurus Terms of Use.