i have a2007 mercury grand marquis and when I drive the a/c blows out the defroster instead of the vents

Asked by Jul 20, 2011 at 08:06 PM about the 2007 Mercury Grand Marquis LS Premium

Question type: Maintenance & Repair

2 Answers

1,565

if your selector switch is in the correct position for vent/dash divert and it blows out the windshield only then its a electrical diverter door or switch control that is not working, if it blows out the vent/dash but then switches to the windshield when your driving its a vacuum leak to one of your hoses under the dash which are extremely hard to locate not recommended for a novice, seek a mechanic for this preferably your Ford dealer.

4 out of 4 people think this is helpful.
450

The EATC module is at fault. These can be repaired or replaced on eBay pretty cheap. The guy who did mine was eatc-man on ebay. He has a store Ford EATC and more on eBay as well. He offers both repair and replacement. Here is the link http://stores.ebay.com/Ford-EATC-and-more.

3 out of 3 people think this is helpful.

Your Answer

Add photo

Related Questions

  • 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

  • air only blows defrost 1 answer

    air will not change from defrost to vent

    2008 Mercury Grand Marquis LS

    -

    Maintenance & Repair

  • Why does my 2005 Marquis blow high heat no matter what setting I have it on? 27 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

  • a/c not blowing out the main vent 4 answers

    a/c works great, just not blowing out of main vent. defrost and floor work fine

    2000 Mercury Grand Marquis LS

    -

    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
15 Great Deals out of 1,061 listings starting at $2,225
Used Lincoln Town Car
33 Great Deals out of 1,839 listings starting at $600
Used Chevrolet Impala
533 Great Deals out of 29,802 listings starting at $799
Used Dodge Charger
282 Great Deals out of 27,244 listings starting at $2,250
Used Chrysler 300
347 Great Deals out of 20,478 listings starting at $1,000
Used Ford Mustang
390 Great Deals out of 47,148 listings starting at $1,999
Used Ford Taurus
238 Great Deals out of 20,401 listings starting at $1,100
Used Ford F-150
2,252 Great Deals out of 209,017 listings starting at $1,499
Used Chevrolet Tahoe
575 Great Deals out of 27,578 listings starting at $1,500
Used Honda Accord
781 Great Deals out of 87,947 listings starting at $1,150
Used Cadillac DTS
50 Great Deals out of 1,632 listings starting at $2,250

Used Cars For Sale

2007 Mercury Grand Marquis LS Premium For Sale
4 Great Deals out of 103 listings starting at $1,600