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2005 mercury grand marquis heater vent problem

Heat comes up thru defroster comes thru vents some times

Posted by Anonymous on

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Posted on Jan 02, 2017

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rteemon
  • 578 Answers

SOURCE: 2005 Merc. Grand Marquis a/c full blower does not

it not a motor its a module and you have look behind the radio in the dash and find it the dirrection section is not working for the area you dont get air

Posted on Sep 12, 2009

Testimonial: "The help was moderately helpful. However, we wanted more technical info. Like do we have to take the radio out? Can we access module from outside?"

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  • 5 Answers

SOURCE: 2004 mecury grand marquis heater or ac will not

check the doors in the heater ductin and make sure all the door motors r workin properly

Posted on Dec 21, 2009

toneman2121
  • 775 Answers

SOURCE: 2000 mercury grand marquis HVAC air distribution

there is a vacuum motor that controls direction for air flow. when there is a vacuum leak, the control door defaults to the defrost vent. the motor, vacuum lines and directional control knob must be inspected. most of the time i have found that there is a vacuum line broken. purchasing a repair manual will help locate and discribe the system.

Posted on May 24, 2010

ZJLimited
  • 17970 Answers

SOURCE: NO AIR IS COMING OUT

Its the blend door; the motor shaft and the door have seperated there is an easy fix look up blend door fix for 98 Mercury Mountaineer it just needs a small finishing nail and done.

Try it and tell us news.

Posted on Nov 03, 2010

  • 34 Answers

SOURCE: THERE IS NO AIR COMING

If all air is coming out the defroster reguardless of the position of the selector, you have a vacuum leak or a vacuum line is disconnected.

Posted on Nov 04, 2010

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1 Answer

2007 merc grand marquis heater air comes out all of the vents and very little out of the defrost vents


Check to make sure the engine vacuum is getting to the heater/ac control. Bad vacuum hose or leak. Many vehicles use engine vacuum to move heater doors and controls. When the vacuum is absent, it usually defaults to air blowing out the AC vents.

Feb 01, 2014 | 2007 Mercury Grand Marquis GS Sedan

1 Answer

My heater does not blow in floor in a dodgeram 1500


the heater vacuum motor and lines needs to be checked.Also get the blend door checked.

NO HEAT ON FLOOR VENTS

---------

As per your problem mentioned. There are few solved help links to troubleshoot these problems. Go through the list and Click the link below:----

2000 Toyota Avalon: No heat on Passenger Side?

http://whatisbyme.blogspot.in/2012/05/2000-toyota-avalon-no-heat-on-passenger.html


------------

No heat on Oldsmobile Silhouette?


http://technoanswers.blogspot.in/2012/02/no-heat-on-oldsmobile-silhouette.html

------------

Heater blows cold?

http://schematicsdiagram.blogspot.in/2012/02/heater-blows-cold.html

-----------

Heat blows cold on drivers side and hot on passenger side?

http://schematicsdiagram.blogspot.com/2011/12/heat-blows-cold-on-drivers-side-and-hot.html

----------

Hot air on the driver's side vents only?

http://repairhelpcenter.blogspot.com/2012/01/hot-air-on-drivers-side-vents-only.html

--------------

Temperature gauge does not move and no heat when heater is ON?

http://technoanswers.blogspot.com/2012/01/temperature-gauge-does-not-move-and-no.html

-----------

1992 Toyota Camry: A/C Control light Flashing and A/C not Blowing Cold?

http://technoanswers.blogspot.in/2012/04/1992-toyota-camry-ac-control-light.html

--------------

No heat, blower blows only cold?

http://technoanswers.blogspot.in/2012/02/no-heatblower-blows-only-cold.html

----------

Ford F150 Ac only blows through defrost vents?

http://technoanswers.blogspot.com/2012/01/forf-f150-ac-only-blows-through-defrost.html

----------

Dodge A/C come out of defrost vents only?

http://technoanswers.blogspot.com/2012/01/dodge-ac-come-out-of-defrost-vents-only.html

---------

Ac vacuum line on dodge cummins?

http://technoanswers.blogspot.com/2012/01/ac-vacuum-line-on-dodge-cummins.html

---------

Ford ranger AC blows cold through defrost vents instead on cabin vents?

http://technoanswers.blogspot.com/2012/01/ford-ranger-ac-blows-cold-through.html

----------

2005 Chrysler PT Cruiser: A/C Blows Warm?

http://whoisbyme.blogspot.in/2012/06/2005-chrysler-p8t-cruiser-ac-blows-warm.html

-------------

2009 Mercury Grand Marquis: A/C blows Cold From Defrost Vent Only?

http://whoisbyme.blogspot.in/2012/06/2009-mercury-grand-marquis-ac-blows.html

-----------

AC not blowing through Vents on 2007 Chevy Trailblazer?

http://schematicsdiagram.blogspot.in/2012/04/ac-not-blowing-through-vents-on-2007.html

----------

Passenger side temperature is warm air out of dash vents?

http://schematicsdiagram.blogspot.in/2012/04/passenger-side-temperature-is-warm-air.html

----------


These will help.

Thanks.

Nov 28, 2012 | Cars & Trucks

1 Answer

No heat from vents


As per your problem mentioned. There are few solved help links to troubleshoot these problems. Go through the list and Click the link below:----

2000 Toyota Avalon: No heat on Passenger Side?

http://whatisbyme.blogspot.in/2012/05/2000-toyota-avalon-no-heat-on-passenger.html

------------

No heat on Oldsmobile Silhouette?


http://technoanswers.blogspot.in/2012/02/no-heat-on-oldsmobile-silhouette.html

------------

Heater blows cold?

http://schematicsdiagram.blogspot.in/2012/02/heater-blows-cold.html

-----------

Heat blows cold on drivers side and hot on passenger side?

http://schematicsdiagram.blogspot.com/2011/12/heat-blows-cold-on-drivers-side-and-hot.html

----------

Hot air on the driver's side vents only?

http://repairhelpcenter.blogspot.com/2012/01/hot-air-on-drivers-side-vents-only.html

--------------

Temperature gauge does not move and no heat when heater is ON?

http://technoanswers.blogspot.com/2012/01/temperature-gauge-does-not-move-and-no.html

-----------

1992 Toyota Camry: A/C Control light Flashing and A/C not Blowing Cold?

http://technoanswers.blogspot.in/2012/04/1992-toyota-camry-ac-control-light.html

--------------


No heat, blower blows only cold?

http://technoanswers.blogspot.in/2012/02/no-heatblower-blows-only-cold.html
----------

Ford F150 Ac only blows through defrost vents?

http://technoanswers.blogspot.com/2012/01/forf-f150-ac-only-blows-through-defrost.html

----------

Dodge A/C come out of defrost vents only?

http://technoanswers.blogspot.com/2012/01/dodge-ac-come-out-of-defrost-vents-only.html

---------

Ac vacuum line on dodge cummins?

http://technoanswers.blogspot.com/2012/01/ac-vacuum-line-on-dodge-cummins.html

---------

Ford ranger AC blows cold through defrost vents instead on cabin vents?

http://technoanswers.blogspot.com/2012/01/ford-ranger-ac-blows-cold-through.html

----------

2005 Chrysler PT Cruiser: A/C Blows Warm?

http://whoisbyme.blogspot.in/2012/06/2005-chrysler-p8t-cruiser-ac-blows-warm.html


-------------

2009 Mercury Grand Marquis: A/C blows Cold From Defrost Vent Only?

http://whoisbyme.blogspot.in/2012/06/2009-mercury-grand-marquis-ac-blows.html

-----------

AC not blowing through Vents on 2007 Chevy Trailblazer?

http://schematicsdiagram.blogspot.in/2012/04/ac-not-blowing-through-vents-on-2007.html

----------

Passenger side temperature is warm air out of dash vents?

http://schematicsdiagram.blogspot.in/2012/04/passenger-side-temperature-is-warm-air.html

----------


These will help.

Thanks.

Nov 28, 2012 | 2006 Ford Taurus

2 Answers

Air Con on my 2009 Mercury grand marquis is giving me problems. Cold air blows out the defrost vents but will not blow out the main vents. Please advise


the blend door in the lwr air vents is stuck it should be down by the squerrl cage also it could be electronically controlled

Jul 14, 2012 | Cars & Trucks

1 Answer

Air only comes out thru defrost but when you let let go of the accelator it starts to come out thru the vents 2003 mercury grand marquis


It sounds like a vacumn problem. When the heater controls loose vacumn it defaults to the defrost position. When your car decels your engine vacumn is at its highest. Check your vacumn lines for damage. Check the control panel for a vacumn leak. If you take out the controls and hear a suction noise than the control switch is leaking.

Jan 11, 2011 | 2003 Mercury Grand Marquis

1 Answer

THERE IS NO AIR COMING OUT OF THE VENTS FOR THE AIR CONDITIONING OR HEATER ON MY 1999 MERCURY GRAND MARQUIS LS


If all air is coming out the defroster reguardless of the position of the selector, you have a vacuum leak or a vacuum line is disconnected.

Nov 03, 2010 | 1999 Mercury Grand Marquis

1 Answer

2000 mercury grand marquis HVAC air distribution problem. Air comes out defrost vents regardless of control settings.


there is a vacuum motor that controls direction for air flow. when there is a vacuum leak, the control door defaults to the defrost vent. the motor, vacuum lines and directional control knob must be inspected. most of the time i have found that there is a vacuum line broken. purchasing a repair manual will help locate and discribe the system.

May 24, 2010 | 2000 Mercury Grand Marquis

1 Answer

The vent function no longer works, i.e. won't blow


manual or electronic heater/A/C controls?

Could be loose vacuum harness on back of control head. Need to put 10" tie straps on to hold it tight to control head.

May 09, 2010 | 2004 Mercury Grand Marquis

1 Answer

2004 mecury grand marquis heater or ac will not blow out air thru the vents, it will defrost but little air comes out


check the doors in the heater ductin and make sure all the door motors r workin properly

Dec 21, 2009 | 2004 Mercury Grand Marquis

1 Answer

2005 Merc. Grand Marquis a/c full blower does not work. a/c goes through defrost vents and/or floor vents. Direct a/c vents go on, but kick off and switch to defrost vents, etc. Someone said it was the...


it not a motor its a module and you have look behind the radio in the dash and find it the dirrection section is not working for the area you dont get air

Sep 11, 2009 | 2005 Mercury Grand Marquis

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