Question about 2004 Toyota Sequoia

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Cabin temperature problems

I have a 2004 Sequoia and am having problems with the temperature control on the heater. It runs ice cold when I turn the control to cold, but if I turn it to 69, the heater kicks in and it blows only very hot air - there is no in between and it doesn't matter what temperature I turn it to it is still blazing hot unless I set it to COLD. I have tried it with the a/c on and with the a/c off, it is still freezing or super hot. Thanks for any help!!!!

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The heater control valve on the engine's firewall may be out of adjustment. There shouldn't be a gap in the valve when the a/c is on max cold.

Posted on Aug 31, 2009

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Posted on Jan 02, 2017

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2 Answers

If my freezon would be low then why is it very cold air when I'm going on the road


because the temp difference between the hi and low side will be greater faster than a normally charged system the reason it cycles off is the keep the evap. from freezing up, but running to low on Freon can cause poor lubrication in the compressor causing damage to the compressor, yes it will blow very cold for a short period of time with a low charge

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WHERE IS THE CABIN AIR FILTER ON A 2010 SEQUOIA


I'm not too familiar with the Sequoia, but I believe the Cabin Air Filter is located behind the Glove Box. Figure out how to remove the glove box carefully and it should be behind a rectangular cover.

Check here also.
CABIN AIR FILTER ON 2010 SEQUOIA AOL Video Search Results

Good luck!

Jul 04, 2014 | 2004 Toyota Sequoia

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Diesel cabin heat assist(webasto)sometimes work and sometimes not, although the temperature is about 2 degrees.I also have a problem with the heating (passenger side blows cold air and the driver side...


I find the Diesel Cabin Heater will not operate if you have less than 100-120 miles of fuel left in the tank. Next time it doesn't work look at the miles left in the tank if if it is below this figure then top up and you will probably find it working again.

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1 Answer

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Air Temperature Control Blend Door Failure No Heat or no AC (dependes on where door sticks)

In all modern cars there is a tiny DC electric motor driven gear drive that moves a plastic door that blends heated and cooled air from the AC and the heater core, this is called (interestedly enough) the air temperature control blend door actuator. The motor that moves this door fails because the door starts sticking from warping, most common complaint is no heat but it can be no AC as well. To replace these parts (blend door and blend door actuator) you must remove the entire dash from the car. Always have this problem confirmed by a dealer or qualified repair shop as it is a very expensive repair.

Other causes of no heat in the cabin are engine thermostats that are stuck open (engine runs cold) or air bubbles in the cooling system.

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Gunnar,
Go to Alldatadiy.com. They have the best wiring Diagrams I have found anywhere. Cost is about $25 (US) for a 12-months subscription.
Let me know if this helped.

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If changing the thermostat didn't work, have the heater control valve checked, it may not be opening all the way to let the coolant circulate thru the heater core fully.

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get the heating coil and the thermostat checked.

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