No heat

Asked by QueenB2000 Oct 26, 2017 at 09:28 PM about the 2005 Mercury Grand Marquis GS

Question type: Maintenance & Repair

I have a 2005 Mercury Grand Marquis. The
heat won't work. The thermostat has been
replaced. Only cold air is coming through
the vents.

2 Answers
7,465

Brianator answered 7 years ago

Low coolant level, plugged heater core or something is up with the heater valve/linkage

Mark helpful
10

JimTtheguru answered 7 years ago

There is a similar problem with a lot of Ford products of that era. There is an electric motor that controls a vent door. The gears in this vent control switch seem to break, leaving the vent door inoperable. Replace the vent door controller and your problem will be resolved. Hint: If you're hearing a clicking sound coming from an area near the center console where it attaches to the dash when you adjust the temperature, it confirms my diagnosis. Good Luck

1 people found this helpful.
Mark helpful

Your Answer:

Related Questions

  • No heat 2 Answers

    I have a 2005 Mercury Grand Marquis. The heat won't work. The thermostat has been replaced. Only cold air is coming through the vents.

    2005 Mercury Grand Marquis GS

    -

    Maintenance & Repair

  • grand marquis no heat 1 Answer

    no heat cold air only. engine temp normal

    2000 Mercury Grand Marquis LS

    -

    Maintenance & Repair

  • No heat 6 Answers

    My 00 grand marquis heat just stop working only blow cold air thermostat works i got the air out my engine by removing my anti freeze cap..any suggestions?

    2000 Mercury Grand Marquis LS

    -

    Maintenance & Repair

  • Little to no heat no change with temperature settings 1 Answer

    It fluctuates some time hot sometimes cold have disconnected ac , no control with temperature selector, need vacuum diagram to find blend door?

    1994 Mercury Grand Marquis LS Sedan RWD

    -

    Maintenance & Repair

  • Mercury Grand Marquis 2008 no heat in cabin 1 Answer

    Checked all the basics. Hose from engine to radiator gets hot. Two smaller diameter hoses at the passenger side that are at the fire wall are hot. Switch for ac or heat ok, vaccuum door moves. Ok air ...

    2008 Mercury Grand Marquis GS

    -

    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
    5,140
  • #3
    Bob Beaman
    Reputation
    3,880
View All

Find great deals from top-rated dealers

Search

Related Models For Sale

Used Ford Crown Victoria
5 listings starting at $8,000
Used Lincoln Town Car
7 listings starting at $9,995
Used Ford F-150
321 Great Deals out of 14,968 listings starting at $1,712
Used Honda Accord
40 Great Deals out of 910 listings starting at $1,599
Used Chevrolet Impala
9 Great Deals out of 107 listings starting at $4,632
Used Chevrolet Tahoe
24 Great Deals out of 911 listings starting at $11,900
Used Chevrolet Corvette
29 Great Deals out of 1,060 listings starting at $15,871
Used Toyota Camry
52 Great Deals out of 985 listings starting at $2,212
Used Chevrolet Silverado 1500
202 Great Deals out of 5,975 listings starting at $2,975
Used Dodge Charger
38 Great Deals out of 645 listings starting at $4,888
Used Ford Mustang
65 Great Deals out of 1,259 listings starting at $4,995

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.