I have a 03 grand marquis with the digital thermostat. When i turn on the car the air Only blows out the defrost and floor but if i wait it eventually blows out my vents. How do i fix this problem?

Asked by May 08, 2015 at 09:21 PM about the 2003 Mercury Grand Marquis LS Ultimate

Question type: Maintenance & Repair

Its not  the vacuum line, i have already
checked it.

1 Answer

63,215

Check the vacuum module,sound,s like it may be sticking,may have to replace it.

Your Answer

Add photo

Related Questions

  • Why does my 2005 Marquis blow high heat no matter what setting I have it on? 23 answers

    My 2005 Mercury Grand Marquis had a clicking sound with the heater blowing and then it quit but now I only get really hot air blowing out. Even when I put it on A/C, Max A/C, Vent, etc. Also, changi...

    2005 Mercury Grand Marquis

    -

    Maintenance & Repair

  • a/c blower vents not switching 8 answers

    I AM HAVING A PROBLEM WITH THE A/C BLOWER NOT BLOWING OUT THE FRONT VENTS. IT IS STUCK ON DEFROST.THIS HAPPENED WHEN IT WAS STILL UNDER WARRENTY ABOUT FIVE YEARS AGO .I WAS DRIVING ALONG AND THE RADI...

    Mercury Grand Marquis

    -

    Maintenance & Repair

  • Heater in a 1997 Grand Mercury marquis 5 answers

    I have a 1997 grand marquis, when i turn my heater on it gets cooler instead of hot. I wanted to say it was the blower motor but it still blows, what could it be?

    1997 Mercury Grand Marquis 4 Dr LS Sedan

    -

    Maintenance & Repair

  • 2005 Merc Grand Marquis w no a/c air flow from vents on front of dash 5 answers

    My '05 Grand Marquis has 140K miles. Recently the front a/c vents quit blowing cold air. For the next 2 weeks we drove it with cold air coming out of the vents on top of the dash only. After 2 week...

    2005 Mercury Grand Marquis GS

    -

    Maintenance & Repair

  • Heat blows from vents but won't blow from floor when put on floor mode 2 answers

    heat won't transfer from vent to floor when put on floor heat blows from defrost

    2006 Dodge Ram 1500

    -

    Maintenance & Repair

Search Mercury Grand Marquis Questions

Mercury Grand Marquis Experts

#1 Tracy Hooks
Tracy Hooks
Reputation 5,340
#2 kbro
kbro
Reputation 2,050
#3 Js08016
Js08016
Reputation 1,710
View All

Related Models For Sale

Used Ford Crown Victoria
10 Great Deals out of 1,044 listings starting at $2,995
Used Lincoln Town Car
29 Great Deals out of 1,841 listings starting at $600
Used Chevrolet Impala
502 Great Deals out of 29,131 listings starting at $1,100
Used Mercury Marauder
26 listings starting at $9,367
Used Lincoln Continental
4,155 listings starting at $42,000
Used Cadillac DeVille
8 Great Deals out of 1,589 listings starting at $1,499
Used Ford Mustang
371 Great Deals out of 46,997 listings starting at $1,500
Used Ford F-150
2,242 Great Deals out of 209,413 listings starting at $1,499
Used Ford Taurus
203 Great Deals out of 20,166 listings starting at $1,510
Used Chevrolet Tahoe
557 Great Deals out of 27,477 listings starting at $999
Used Honda Accord
710 Great Deals out of 87,133 listings starting at $699

Used Cars For Sale

2011 Mercury Grand Marquis For Sale
3 Great Deals out of 32 listings starting at $5,495
2010 Mercury Grand Marquis For Sale
87 listings starting at $2,495
2009 Mercury Grand Marquis For Sale
5 Great Deals out of 108 listings starting at $4,000
2008 Mercury Grand Marquis For Sale
3 Great Deals out of 142 listings starting at $2,250
2007 Mercury Grand Marquis For Sale
7 Great Deals out of 148 listings starting at $1,600