Do you notice any water leaking from under the dash on the passenger side that causes the floor mats to get wet? The leak (if any) would not be heavy or consistent. It's easy to not even notice it, or maybe you have felt a wet spot but you explained it away as a drink spill or something? While it could be something else, but if I were you I would flush the HEATER CORE. The symptom you describe is exactly what happens when a heater core is clogged. The wet spot starts happening means the clog is progressing and at any time you could be driving on the freeway in the bliss of utter cluelessness when the heater core explodes and 10 seconds later the cab fills with blinding white smoke and you can't see your hand in front of your face. A very deadly situation to be in ar 65 MPH... If you catch the problem at any time before it explodes you can save yourself a ton of money cause replacing a heater core is timely and expensive. A flush is a cakewalk, Check out youtube and search "heater core explodes while driving" it SCARY but there is a ton of videos showing how to flush the core. good luck.
Check the engine radiator for water /dont open the radiator cap when the engine is hot
NO HEAT ON FLOOR VENTS
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As
per your problem mentioned. There are few solved help links to
troubleshoot these problems. Go through the list and Click the link below:----
http://whatisbyme.blogspot.in/2012/05/2000-toyota-avalon-no-heat-on-passenger.html
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http://schematicsdiagram.blogspot.in/2012/02/heater-blows-cold.html
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http://repairhelpcenter.blogspot.com/2012/01/hot-air-on-drivers-side-vents-only.html
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http://technoanswers.blogspot.in/2012/04/1992-toyota-camry-ac-control-light.html
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http://technoanswers.blogspot.in/2012/02/no-heatblower-blows-only-cold.html
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http://whoisbyme.blogspot.in/2012/06/2009-mercury-grand-marquis-ac-blows.html
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http://schematicsdiagram.blogspot.in/2012/04/ac-not-blowing-through-vents-on-2007.html
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http://schematicsdiagram.blogspot.in/2012/04/passenger-side-temperature-is-warm-air.html
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These
will help.
Thanks.
As
per your problem mentioned. There are few solved help links to
troubleshoot these problems. Go through the list and Click the link below:----
------------
------------
http://schematicsdiagram.blogspot.in/2012/02/heater-blows-cold.html
-----------
http://repairhelpcenter.blogspot.com/2012/01/hot-air-on-drivers-side-vents-only.html
--------------
-----------
http://technoanswers.blogspot.in/2012/04/1992-toyota-camry-ac-control-light.html
--------------
These will help.
Thanks.
When I turn on the heat in my 2004 mazda mpv the front air vents blow heat but the rear air vents are blowing cold. I have adjusted every setting is there something I am overlooking.
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