2004 Grand Marquis Blen Door Changed But Still Blowing Hot Air

Asked by Farhan 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
30,955

Tom answered 7 years ago

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

Mark helpful
159,315

Bob answered 7 years ago

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

Mark helpful
30,955

Tom answered 7 years ago

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

Mark helpful

Your Answer:

Related Questions

  • 2004 Grand Marquis Blen Door Changed But Still Blowing Hot Air 3 Answers

    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...

    2004 Mercury Grand Marquis

    -

    Maintenance & Repair

  • 2004 Grand Marquis not blowing air 1 Answer

    I replaced the blower motor in my 2004 Grand Marquis after the air stopped blowing. This did not fix so I had the shop replace the resistor. The air worked for about a week then stopped blowing again....

    2004 Mercury Grand Marquis GS

    -

    Maintenance & Repair

  • 2002 Grand Marquis blowing hot air 2 Answers

    My car is blowing hot air out of the vents when i turn on A/C.

    2002 Mercury Grand Marquis LS Ultimate

    -

    Maintenance & Repair

  • My 2000 Mercury Grand Marquis always blow hot air out. What is the problem 3 Answers

    My 2000 Mercury Grand Marquis had a clicking sound with the switch on of heater blowing, AC or vent.... at beginning time and then it quit but now I only get really hot air blowing out. Even when I...

    2000 Mercury Grand Marquis LS

    -

    Maintenance & Repair

  • 2004 GRAND MARQUIS blower motor 1 Answer

    I have a 2004 grand marquis with automatic temperature control that erractically blows air, I have already changed the blower resistor and blower motor and problem still exists. I've read able c...

    2004 Mercury Grand Marquis

    -

    Maintenance & Repair

Grand Marquis

Looking for a Used Grand Marquis in your area?

CarGurus has 2 nationwide Grand Marquis listings and the tools to find you a great deal.

Postal Code:

Shortcuts

Search Mercury Grand Marquis Questions

CarGurus Experts

  • #1
    Tracy Hooks
    Reputation
    9,860
  • #2
    Trippmeister
    Reputation
    5,150
  • #3
    Bob Beaman
    Reputation
    3,890
View All

Find great deals from top-rated dealers

Search

Related Models For Sale

Used Ford Crown Victoria
3 listings
Used Lincoln Town Car
4 listings
Used Toyota Camry
66 Great Deals out of 1,087 listings starting at $3,500
Used Buick LeSabre
1 listing
Used Chevrolet Impala
9 Great Deals out of 94 listings starting at $3,795
Used Ford Mustang
54 Great Deals out of 1,375 listings starting at $4,995
Used Ford F-150
296 Great Deals out of 14,245 listings starting at $1,712
Used Chevrolet Silverado 1500
177 Great Deals out of 5,850 listings starting at $2,975
Used Chevrolet Tahoe
12 Great Deals out of 873 listings starting at $12,900
Used Honda Accord
49 Great Deals out of 986 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. Content will be removed if CarGurus becomes aware that it violates our policies.