Question about 2001 Toyota Sienna

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My toyota sienna 2005 is "runnng hot" and I

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  • Bonnie Jun 27, 2012

    Check your thermostat

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It could be that your thermostat is sticking and therefore not opening up to allow the antifreeze to flow through the radiator when the water warms up. You'll need to check to see if you have enough coolant in your radiator as well. I have written up a complete tutorial on how to change the thermostat and radiator on my website: John Fixes Stuff How to Replace the Thermostat on 2004 2010 Toyota Sienna John Fixes Stuff How to Replace the Radiator on 2004 2010 Toyota Sienna

Posted on Mar 20, 2015

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Check rad/coolent fluid level

Posted on Jan 03, 2011

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Posted on Jan 02, 2017

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1 Answer

Why would a 2009 toyota sienna, blows hot air?


does the hot/cold control knob feel like it is moving something or is it very hard/easy to turn ? sounds as if the hot/cold setting is stuck at hot would need to strip back heater control panel and follow the control wire/cable to the heater box where a flap opens and shuts for hot or cold air and see what is happening ,cable may have broken , flap may have come off it's hinge won't know until you get a look at it , the engine isn't over heating is it ?

May 20, 2014 | 1998 Toyota Tacoma

3 Answers

My 2005 Toyota Sienna just stopped blowing heat only cold air


do you know if the heater core hoses are hot under the hood? have you checked the coolant level? you mat also have a blend door motor problem

Feb 10, 2013 | 2006 Toyota Sienna

1 Answer

Why does the front heater only blow cold air


you must listen when changing the temperature from cold to hot to see if you can hear the heater duct opening & closing,if not could be a vacuum hose is disconnected or broken,or the vacuum motor that moves the duct door has broken you might hear a hissing sound,or a cable has broken,I don't think it's a fuse ,because it's working when you turn it on,those are good possible causes I have given you have fun & I hope you have small hands,limited space acess

Dec 29, 2012 | 2006 Toyota Sienna

1 Answer

The heater in my 1999 Land Rover Discovery Series 1 won't blow cold.


As per your problem mentioned.There are few solved help links to troubleshoot these problems.Go through the list and Click the link below:----
Air conditioner blows air but not cold air http://repairhelpcenter.blogspot.in/2012/07/air-conditioner-blows-air-but-not-cold.html

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Car overheats and Air blows hot at idle? http://howtobyme.blogspot.com/2011/11/car-overheats-and-air-blows-hot-at-idle.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---------- 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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2005 Chrysler PT Cruiser: A/C Blows Warm? http://whoisbyme.blogspot.in/2012/06/2005-chrysler-pt-cruiser-ac-blows-warm.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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These will help.
Thanks.

Nov 22, 2012 | Cars & Trucks

1 Answer

2004 sienna heating system problem. With the from heat control set to hot it sometimes blows hot and the cold air back and forth on its own with the heat set to hot?


try turning the blower down, if you have the fan on full you will feel cooler air from time to time. as the thermostat only measures the ambient tempreture inside the car when this level is met then it will turn off the heat so it will only blow the air from the car which will feel cooler.
if the car is still cold suspect the tempreture control in the car maybe faulty or the water level in the system maybe low.

Dec 02, 2009 | 2004 Toyota Sienna

1 Answer

No hot air at rear vents on 98 Toyota Sienna CE


Possible that heatcore is going or hose from heater is leaking or falling off.
You can go to www.autozone.com and see a full free online repair manual for your van

Apr 07, 2009 | 1998 Toyota Sienna

2 Answers

Heater only blows out cold air


Check the valve that controls coolant flow to the cabin

Feb 11, 2009 | 2005 Toyota Corolla

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