Question about 2001 Jeep Grand Cherokee

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No heat comes out only cold air. It started with one side going out then the other. What do you think it could be?

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Definitely a blend door problem. go to ebay and search blen dor store. this guy has a product that will help! good luck.

Posted on Dec 03, 2008

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If you have automatic temp control, the blend door accuator could be bad. If you have normal temp controls, the heater control valve could be bad.

Posted on Nov 22, 2008

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I have a 2003 Tahoe and when I put the heater on only the driver side get warm passenger side blow cold air


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Jan 21, 2016 | Cars & Trucks

1 Answer

Dodge journey has heat on drivers side and cold on passenger and rear. clicking noise from dash on paasenger side


I have taken my 2010 Dodge journey in 3 times. Actuator replace system flushed out and still no one knows the answer. It's getting cold here so I think the answer is sell it.

Jan 22, 2013 | 2009 Dodge Journey

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

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No heat on Oldsmobile Silhouette?


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

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Heater blows cold?

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

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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

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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

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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

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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


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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.

Nov 28, 2012 | 2006 Ford Taurus

1 Answer

Heater core is working properly but car will not blow hot air only cold air i am thinking the flapper that controls hot \ cold is stuck in the cold air position


To troubleshoot this types of problem,click the link below :----http://howtobyme.blogspot.in/2012/02/heater-blows-only-from-defrost.html
--------Go through the procedure to confirm the issue.

------
Engine Overheats and heater blowing cold?

http://howtobyme.blogspot.com/2011/11/engine-overheats-and-heater-blowing.html

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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

-----------


This will help.Thanks.

Jan 25, 2012 | 2001 Buick LeSabre

1 Answer

What if the heater hose going in is hot and the heater hose coming out is cold.the heater will blow cold air


Possibly the heater core is 90% blocked. open enough to draw hot water in, (hose feels hot) but not enough volume to provide heat from very cold air, 10% hot water gets cold quick, coming from core..
Flush heater core in reverse direction - cold side in hot side out..

Just a theory..

Dec 14, 2010 | 2000 Chevrolet Silverado

1 Answer

Cold air coming out on drivers side heat coming


check to see if the vent duct has came loose

Jun 22, 2010 | 2005 Chevrolet Avalanche

1 Answer

Started out with cold air coming out the vents


I'm no 'expert' but it sounds like possibly 2 different problems. Your heat comes from warm/hot coolant circulating through the heater core, and the fan blowing air through/over it. If your thermostat is not opening the coolant won't circulate. Thermostat is a not too difficult or costly starting place. No air flow leads me to think you have a blower motor issue, perhaps start with the fuse. Hope this helps.

Dec 04, 2009 | 2001 Dodge Ram 1500 Truck 2WD

1 Answer

A/C only from center vent. Heat from side vents and floor vents.


sounds like the blend motor from hot to cold is stuck open half way allowing both temps to come into the car.

Aug 24, 2009 | 2003 Jaguar S-Type

2 Answers

2003 buick lesabre AC problem


You have to find the motor that controls the blend door and open it manually to find out which one is bad there are 3 blend doors on the HV/AC system one will be where the heater core is. The other will be between the vented air and AC? heating system then the third door will operate vents in dash and defrost condition. If you have someone operate them AC system heating system and watch the blend door motors, the one you find not moving will be the one that has the problem. They have vacuum and electrical motors, if it is a acuum motor you can move the door manually with your hand, if it's electric you will have to disconnect the rod by removing the pinch clip off of the rod.

Jul 10, 2009 | 2003 Buick LeSabre

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