Question about Nissan Quest

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My 2004 nissan quest heater blows cold air, need my heat to work, i adjusted every setting for warmth but no change, please help, thank you.

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Your thermostat is stuck opened,not letting your coolant to heat up Sandra,need to replace.

Posted on Oct 13, 2013


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Posted on Jan 02, 2017

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SOURCE: heater blowing cold air only

check the heating core or radiator for clogging or leaks

Posted on Nov 25, 2009

  • 424 Answers

SOURCE: No front heat

Are you sure the temperature door is moving ? I have seen the door break or the actuator not move. It is either the door or the actuator.

Posted on Jan 29, 2009

  • 2039 Answers

SOURCE: Heater blows cold, and fan switch only works on 4 and 5

working on 4 and 5 speed that the resistor that broken cold air you got to move the selector to see the motor that move the trap hot and cold sometime when the motor was not move to the hot side for a long time its jam the motor on the passager side under dash put to hot and gently tap the motor tanks pierre

Posted on Nov 09, 2008

  • 405 Answers

SOURCE: Front air condition does not blow cold. Rear air condition does

sounds like a damper door in the front not working properly, these are actuated by the front temp control, the door is operated by either a manual cable, and electric actuator, or vacuum. I hope this helps you zero in on your problem. Merry Christmas

Posted on Dec 22, 2008

  • 1 Answer

SOURCE: heater blowing clod air

Check your rad, could be a leak and low on fluid - check level in overflow. Low fluid with leak, no heat. replace radiator

Posted on Feb 28, 2009

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NO HEAT. A/C works fine. Air blows but no warmth. blows cold air for front defog and cold air blows when temp cranked high 1-5

warmth comes from the heater in the car
if it is climate control check the climate control module
check for heater control in the vent settings as the hot water tap may not be turning on

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Make sure that the tubing around the accumulator is getting cold.
If not, the refrigerant may not be charged up.
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Do you hear the vacuum motors working when adjusting the heat to cold selector? or changing the thermostat temperature if so equipped?

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Defrost and heat does not get hot on 2001 nissan quest, fan blows but is cold air.

It sounds like one of two things could be causing your concern. One... your coolant level is low and not circulating through the heater core which could possibly have air trapped in it. Two.. your mix door may not be operating properly. Sounds like the second one to me.

Check your overflow tank to see if it has coolant in it. This vehicle has rear air meaning coolant has to travel to the rear to heat the compartment. Air will have to be purged from the coolant system. WIth the engine cold remove the radiator cap and check the level in the radiator. If there is no coolant present there is a possibility that you have a leak somewhere in the system and it will need to be pressure checked.

Whether you have AUTO or MANUAL air the mix door has a motor mounted on it. If that motor does not work you will experience the concern that you have. Turn the knob (on manual models) from hot to cool to hot and listen for air sound change. On AUTO models change the temperature from 90 to 60 to 90 (make sure you are in manual mode so the mode doors don't change). There is a slight restriction on heat because the air has to travel through the heater core

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1 Answer

Heater blows cold air from top vents after running for 1.3 hours

Sounds like you may be able to fix it by flushing your antifreeze and back flushing the heater core. Some car owners cheep out and put stop leak into the antifreeze, others dont change there antifreeze at all. Both are mistakes.

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