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Posted on Nov 06, 2017
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My 2002 Avalon has a problem with the AC/Heater. Initially it will blow warm air, but after a period of time, it begins to blow only cool air. After shutting off the AC for a long period of time, it may or may not start heating properly when I turn it back on. Since this is an intermittant problem, the dealership has been no help.

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5 Related Answers

Anonymous

  • 1861 Answers
  • Posted on Oct 02, 2008

SOURCE: Air Conditioner in 03 Toyota Echo

apology in advance, still waiting for the details from your repair bill.

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roniecon

Ronny Bennett Sr.

  • 6988 Answers
  • Posted on Jul 04, 2009

SOURCE: 1996 Avalon AC stops working on long trips

over heating of the condenser(fans not working) or a blockage in the system maybe expansion valve

Anonymous

  • 1 Answer
  • Posted on Nov 05, 2009

SOURCE: Heater not working, had thermostat replaced no

My 87 Celica had the same problem and it was the solder connections on the back of the heater control panel.

motor1258

Mike Butler

  • 6674 Answers
  • Posted on Dec 22, 2009

SOURCE: I have a problem with the heat in my 99 4 runner.

When was last flush and thermostat replaced? Also, it may sound crazy but, when I have a partially clogged heater core, which I suspect you do, I usually will disconnect the hose at the heater core, and connect a drill operated pump from hardware store (about $10) to the heater core, and circulate C.L.R through it before putting it all back together. I usually set it up to pump through the core and back into a pail or similar, and then reverse the hoses to allow flow opposite way as well, then I plug lower inlet to core, and fill with C.L.R, and let it sit overnight if I have time, just to clean out as much calcium clogged up in there as I can. Saved me replacing 2 or 3 heater cores so far, that had little or no heat at idle, prior to cleaning, but had good heat after.

Anonymous

  • 714 Answers
  • Posted on Jan 31, 2010

SOURCE: Heater doesn't put out heat.

could be your temp control actuator which is under the dash

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Related Questions:

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1answer

I have a 2007 Saturn, Aura. Heater does not blow hot, slow coolant leak, & it also over heats. Please help! I'm freezing when I'm in my car!!!
You need to fix the coolant leak, then refill and bleed cooling system, then you will get heat and cure overheating problem too
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Dec 16, 2015 • Cars & Trucks
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My heater does not blow in floor in a dodgeram 1500
the heater vacuum motor and lines needs to be checked.Also get the blend door checked.

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:----

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

------------

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

-----------

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

--------------

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

---------

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

-------------

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

-----------

AC not blowing through Vents on 2007 Chevy Trailblazer?

http://schematicsdiagram.blogspot.in/2012/04/ac-not-blowing-through-vents-on-2007.html

----------

Passenger side temperature is warm air out of dash vents?

http://schematicsdiagram.blogspot.in/2012/04/passenger-side-temperature-is-warm-air.html

----------


These will help.

Thanks.

Read full answer
Nov 28, 2012 • Cars & Trucks
0helpful
1answer

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

------------

No heat on Oldsmobile Silhouette?


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

------------

Heater blows cold?

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

-----------

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

--------------

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

-----------

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

--------------


No heat, blower blows only cold?

http://technoanswers.blogspot.in/2012/02/no-heatblower-blows-only-cold.html
----------

Ford F150 Ac only blows through defrost vents?

http://technoanswers.blogspot.com/2012/01/forf-f150-ac-only-blows-through-defrost.html

----------

Dodge A/C come out of defrost vents only?

http://technoanswers.blogspot.com/2012/01/dodge-ac-come-out-of-defrost-vents-only.html

---------

Ac vacuum line on dodge cummins?

http://technoanswers.blogspot.com/2012/01/ac-vacuum-line-on-dodge-cummins.html

---------

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

----------

2005 Chrysler PT Cruiser: A/C Blows Warm?

http://whoisbyme.blogspot.in/2012/06/2005-chrysler-p8t-cruiser-ac-blows-warm.html


-------------

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

-----------

AC not blowing through Vents on 2007 Chevy Trailblazer?

http://schematicsdiagram.blogspot.in/2012/04/ac-not-blowing-through-vents-on-2007.html

----------

Passenger side temperature is warm air out of dash vents?

http://schematicsdiagram.blogspot.in/2012/04/passenger-side-temperature-is-warm-air.html

----------


These will help.

Thanks.

Read full answer
Nov 28, 2012 • 2006 Ford Taurus
1helpful
1answer

My A/C stops cooling and blows warm air when vehicle is idiling for an extended period of time such as sitting in traffic. Is there any other solution other than adding an auxiliary fan in front of the...
It appears you know why your ac starts to blow warm air...not enough airflow thru the condenser. A aux fan would definatly fix this but two things you can try. Take compressed air and blow out the condenser but not from the front side... blow from the engine side. Small dust particles will collect inside the condenser over the years and pack in restricting airflow. Hopefully this takes care of it.
The other thing is to have your fan clutch checked it may be acting up on you which will also not pull enough airflow thru the condenser. If all else fails say hello to a electric cooling fan. Good luck!
Read full answer
Feb 08, 2011 • 2002 GMC Yukon Denali
0helpful
2answers

Heater not working, had thermostat replaced no changed. Heater blowing cool air and warms after 1 hour. 2001 Toyota (6 C )Avalon Fred
Have you checked the fuse box under the bonet poper there is a heater fuse......try that
Read full answer
Sep 20, 2009 • 2001 Toyota Avalon
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My ac only works part of the time
u have a temp door accuator motor shorting out
Read full answer
Jun 30, 2009 • 2002 Chrysler Sebring
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2002 bmw 3 series intermittent ac
Sounds like a compressor problem.
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Jun 05, 2009 • 2001 BMW 325
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2002 explorer ac is not cooling very much after having system seviced. Seems like the air coming out starts to cool then the system sounds like it is still blowing but not much air comes out and it is...
where does the air blow out at? ie floor, vent , defrost. do you hear any unusual noise when changing from hot to cold? ie a clicking noise
Read full answer
Apr 24, 2009 • 2002 Ford Explorer
1helpful
1answer

Heater issues
you need to begin by changing the thermostat. if you dont know how go to an autozone and they will assist you.

if that doesnt solve the problem you need to change the heater/ac blower relay.
Read full answer
Jan 27, 2009 • 2002 Dodge Stratus
0helpful
1answer

Heater and AC Occasionaly Does't blow.
Fan switch could be faulty. If you can look close at the back of the switch, see if it looks like it has been overheated.
Squido
Read full answer
Dec 15, 2008 • 2001 Pontiac Grand Am SE
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