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Kim Underwood
Kim Underwood Posted on Mar 05, 2013
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Defrost not working in 2000 chrysler 300

The heat works great but, it will only blow out of the front vents. The defrost wont work at all. What could the problem be?

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Stephen

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  • Chrysler Master 21,873 Answers
  • Posted on Mar 06, 2013
Stephen
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Usually a sign of a faulty blend door under the dash.
The blend doors direct air thru the heater core and the desired vents.

5 Related Answers

Anonymous

  • 1 Answer
  • Posted on Jan 03, 2009

SOURCE: Front defrost not working 2004 Pacifica

I did not have defroster or venting to the feet. All I had was vent. I brought it to the shop they replaced the mode door actuator which flips the doors inside to make it flow to the defrost or vent etc; This cost me $210.00. They had to take the dash apart plus disengage the air bag under the steering wheel to get to the actuator.

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robert wales

  • 4977 Answers
  • Posted on Mar 17, 2011

SOURCE: 2006 chrysler pacifica air blinder

the blower relay switch controls the blower motor,this sounds more like an air blend switch on the heater control head on the dash,not making the switch over in that switch.it could be the air blend door motor on the heater duct under the dash on the passenger side.this can be checked with a scan tool that has the capability to communicate with the bcm computer on this car.

simidrm45844

  • 159 Answers
  • Posted on Dec 25, 2008

SOURCE: front vents will not work

If they are stuck on defrost,then the problem is a little vaccum line that comes through the firewall as all the climate controls are vaccum controlled,so look for a small green or black plastic line unhooked.

Danniboi

Dan Doherty

  • 1099 Answers
  • Posted on Jan 16, 2010

SOURCE: The heated seats for the front driver and passenger don't work

yes maybe a fuse, also look under the seat and ensure the wire is connected they sometimes get caught when moving the seat back and forward and split against the metal seat base.

Anonymous

  • 10 Answers
  • Posted on Feb 14, 2010

SOURCE: my 98 concorde wont blow heat on defrost, only on the vents

haha

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This video will show you haw to replace the blend door motor.
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Jan 27, 2016 • 2000 Chrysler 300M
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My front defroster does not work but the back heater works.. if the van is running it will heat up but when you start driving the gage goes back to cold it blows cold but defroster wont work at all
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Dec 02, 2015 • Cars & Trucks
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Why my heat works on my 2004 Chrysler Sebring but it only blows out from my front dash only and not the floor or Front dash defrost?
More than likely a bad vacuum or electric actuator, or bad vacuum line. Actuators control the mode doors to change from floor, vent, and defrost.
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Nov 08, 2014 • 2004 Chrysler Sebring
1helpful
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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

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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

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Ford F150 Ac only blows through defrost vents?

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

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Dodge A/C come out of defrost vents only?

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

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Ac vacuum line on dodge cummins?

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

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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

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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

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AC not blowing through Vents on 2007 Chevy Trailblazer?

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

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Passenger side temperature is warm air out of dash vents?

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

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These will help.

Thanks.

Read full answer
Nov 28, 2012 • Cars & Trucks
0helpful
1answer

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.

Read full answer
Nov 28, 2012 • 2006 Ford Taurus
0helpful
1answer

2000 Oldsmobile Bravada only blows out air from the front vents
mabey a bad mode door acuator,stuck. partally plugged heater core. thees systems can be tricky when they have auto climate control
Read full answer
Nov 29, 2011 • 2000 Oldsmobile Bravada
0helpful
2answers

My 98 concorde wont blow heat on defrost, only on the vents
haha
Read full answer
Jan 09, 2010 • 1998 Chrysler Concorde
0helpful
1answer

Front vents will not work
If they are stuck on defrost,then the problem is a little vaccum line that comes through the firewall as all the climate controls are vaccum controlled,so look for a small green or black plastic line unhooked.
Read full answer
Dec 25, 2008 • 2005 Chrysler Town & Country
0helpful
1answer

Defroster
sounds like the vent mechanism is not working. not sure if it operates on vacuum or mechanical.

Robert
Read full answer
Dec 16, 2008 • 1987 Chrysler New Yorker
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