2003 Mercury Grand Marquis middle vents doesn't blow anything

Asked by Jerard May 19, 2017 at 11:09 PM about the 2003 Mercury Grand Marquis LS Premium

Question type: Maintenance & Repair

I have a 2003 Mercury Grand Marquis. My defrost and floor
vents work, but the middles vents doesn't blow anything.
Also my vehicle gets cold but it seems as if the cold air
escapes. I have electrical controls no knobs. Any
suggestions to the problem?

2 Answers
223,935

Rowefast answered 7 years ago

Some electrical testing may need to be done, the HVAC control module or the HVAC blend door actuator could be bad, or there is a problem with the blend door itself. This just has to be looked at to determine the problem. As far as heat, either the thermostat needs replacing, or there is a problem with the HVAC Heater Control Valve in the heater hose.

1 people found this helpful.
Mark helpful
220

NuMenu answered 6 years ago

Fixed same issue on my '03 Marquis with new 007 size O rings for little valves in dash mounted Climate Control push button panel. Easy DIY job. Videos on YouTube how to. $5 in parts. Dealer will tell you the whole unit must be replaced to the tune of $$$$$ bucks. Do it yourself for around $5 in O rings.

4 people found this helpful.
Mark helpful

Your Answer:

Related Questions

  • 2003 Mercury Grand Marquis middle vents doesn't blow anything 2 Answers

    I have a 2003 Mercury Grand Marquis. My defrost and floor vents work, but the middles vents doesn't blow anything. Also my vehicle gets cold but it seems as if the cold air escapes. I have electric...

    2003 Mercury Grand Marquis LS Premium

    -

    Maintenance & Repair

  • door ajar 07 mercury grand marquis 3 Answers

    07 mercury grand marquis

    2007 Mercury Grand Marquis LS Premium

    -

    Maintenance & Repair

  • 2003 mercury grand marquis overheating, after replacing fan and thermostat 13 Answers

    My 2003 mercury grand marquis is overheating, even after replacing the fan and thermostat. There does not appear to be any problem with the water pump. I can drive it all day at hiway speeds, but ...

    2003 Mercury Grand Marquis LSE

    -

    Maintenance & Repair

  • 2003 Mercury Grand Marquis Bolt Size 1 Answer

    Hi guys, I recently changed the blower motor resistor in my 2003 MGM. I think this repair had been done previously, as the resistor was only secured with one bolt. I would like to go back and secur...

    2003 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

Own this car?

Share your experience with others.

2003 Mercury Grand Marquis

Write a car review

Review another car

Shortcuts

Search Mercury Grand Marquis Questions

CarGurus Experts

  • #1
    Tracy Hooks
    Reputation
    9,860
  • #2
    Trippmeister
    Reputation
    5,140
  • #3
    Bob Beaman
    Reputation
    3,880
View All

Know more, shop wisely

Search

Related Models For Sale

Used Lincoln Town Car
10 Great Deals out of 407 listings starting at $1,050
Used Ford Crown Victoria
4 Great Deals out of 136 listings starting at $3,200
Used Ford F-150
6,456 Great Deals out of 172,211 listings starting at $1,999
Used Mercury Marauder
9 listings
Used Chevrolet Impala
243 Great Deals out of 3,876 listings starting at $1,500
Used Chevrolet Corvette
777 Great Deals out of 14,535 listings starting at $4,999
Used Ford Mustang
964 Great Deals out of 19,910 listings starting at $1,950
Used Toyota Camry
2,125 Great Deals out of 44,919 listings starting at $950
Used Toyota Tundra
1,033 Great Deals out of 32,101 listings starting at $2,999
Used Buick LeSabre
3 Great Deals out of 186 listings starting at $1,895
Used Chevrolet Silverado 1500
4,227 Great Deals out of 123,650 listings starting at $1,999
Used Honda Accord
1,523 Great Deals out of 30,474 listings starting at $1,200
Used Cadillac DeVille
254 listings starting at $2,995
Used Toyota Avalon
159 Great Deals out of 2,070 listings starting at $1,999

Used Cars For Sale

2007 Mercury Grand Marquis LS Premium For Sale
17 listings starting at $3,995

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.