Question about 2003 Toyota Corolla

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2003 Toyota corolla air conditioning air is blowing hot air out and not cold air. Checked our air filter it was not clogged as this has happened in the past and after a day it began to blow cold air again but, this time it has been over 3 days and it is still blowing hot air. What should I do?

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Is the compressor turning? If not, replace the AC clutch relay. $11 at rockauto.com

Posted on Aug 10, 2010

  • cheap repair Sep 21, 2010

    It is located under the hood, marked M/G CLT

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Check fuses

Posted on Sep 23, 2009

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SOURCE: 2003 Toyota corolla airconditioning not coming on.

If it blows, but not cold, Either you have a leak in the system, the condenser fan isn't running (although it would cool on the highway forcing air through the condenser.. It needs a partial charge with UV dye so any leaks can be traced...

Posted on Sep 12, 2009

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1 Answer

Toyota corolla 2003 air conditioning green light blinking and cold air not blowing


You've figured out by now the blinking light means the system has a problem. You'll need to find out if the system is low on freon or if a relay or electrical part is failing. The cooling fan could also be failing to come on, which would make the high side pressure exceed the limit and shut down the system.

Jun 24, 2012 | 2003 Toyota Corolla

1 Answer

My toyota corollas (2004 LE) a/c blows out cold air for 10 min and then starts blowing out warm/hot air. Filled up freon but it did not work.


Sounds like your HAVC pressure switch is going out cutting off prematurely or the system is overcharged and shutting off to prevent damage.

Apr 03, 2012 | 2004 Toyota Corolla

1 Answer

I have a 2003 toyota corolla. My AC would blow cold air for a min or two then when the compressor shut off it would no longer blow cold air or come back on. A new compressor was put in it but it did not...


the ac clutch relay is the problem. It is located in the under hood fuse box. It is a $10 part. The relay will make a clicking sound when activated but the contacts inside are burnt causing no electrical flow to the ac compressor. Simply unplug and replace. The relay is labeled M/G CLT .

replace or blow out the cabin air filter as well. It is located behind the glove box. Instructions are in your owners manual.

Oct 31, 2010 | 2003 Toyota Corolla

1 Answer

2003 Toyota corolla airconditioning not coming on. It was running fine and then all of the sudden the air was blowing hot air out and not cold air. Checked our air filter it was not clogged as this has...


If it blows, but not cold, Either you have a leak in the system, the condenser fan isn't running (although it would cool on the highway forcing air through the condenser.. It needs a partial charge with UV dye so any leaks can be traced...

Sep 12, 2009 | 2003 Toyota Corolla

1 Answer

Air Condition Hot Air


there is a updated ac relay for that, go to your toyota dealer and buy a new mgt relay its located in the fuse box in the engine bay on the drivers side.

Aug 18, 2009 | 2003 Toyota Camry

2 Answers

03 corolla air conditioning problems


If you were low on freon before, It's possible you have a leak in your system. If you take it back, have them check for the leak before they let you drive off with another freon loss.
Good luck...

Jun 11, 2009 | 2003 Toyota Corolla

1 Answer

2003 corolla heater temperature varies


check your in cabin air filter located behing the glove compartment. see your owner's manual for directions.
When this filter gets clogged air flow is restricted. You can blow the filter out with compressed air or replace. make sure you put in right side up.

Mar 14, 2009 | 2003 Toyota Corolla

2 Answers

Heater only blows out cold air


Check the valve that controls coolant flow to the cabin

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1 Answer

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find out if ur a/c system has an expansion valve if so then one of them is clogged

Jun 26, 2008 | 2003 Toyota 4Runner

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