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How to check if the aircon looses freon - Heating & Cooling

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Get a piece of cardboard the same size as the evaporator. Move the temp sensor so the machine will not shut down. Cover the evaporator and watch the suction line. If it frosts back to the compressor then the machine does not need freon.

Posted on May 24, 2011

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The aircon of my Toyota Fortuner 2006 is not too cold even when the thermostat is at its coldest. The freon content is normal and has no leak. What do you think is the problem and can you recommend a...

Check the aircon filter located at the back of the glove compartment
you will have to remove the glove box by pressing the two ends
left and right and remove it there you will find the ac filter.
Good luck.

Aug 24, 2013 | 2006 Toyota Fortuner 3,0

1 Answer

Aircon cutout and had bad smell come out. now it is not as cold as it used to be

Check system for leaks. Freon leaks especially on evaporator core located under dash

Feb 03, 2013 | Cars & Trucks

1 Answer


Hi Marvin Mallari...

Sounds like your system may be low on freon...take it to an ac shop to have it check and filled to specs.
If your mechanically inclined you can buy a aircon freon kit from your local auto part house and add the freon to you system yourself.
Please rate me

Sep 27, 2012 | 1999 Pontiac Grand Am GT

1 Answer

There's only fan blow and there's no aircon once i turn on the aircon switch.what could be the problem??need advise

Your a/c system could have a leak causing no freon in the system. If you could, add a can or cans of freon with leak detector into the low pressure side and listen for your compressor to start cycling. If it does the good news is your compressor is good. The bad news is you have a freon leak and need to find out where it is. It could be as simple as a bad shrader valve.

May 21, 2011 | Mitsubishi Lancer Cars & Trucks

2 Answers

The air condition doesn't blow cool air when it's on. what could it be?

freon leak, check to see if compressor is kickin on, look under hood for a/c compressor. the front will move with the pulley if its working, ... if not working its low on freon or low pressure switch is bad,

Apr 02, 2011 | 1991 Lincoln Town Car

1 Answer

Just had aircon regassed on 2002 focus bowers working aircon light on but not cold at all

If freon was added because of a leak, it could have leaked down again. If freon levels are too low, the compressor will not switch on. Check to see if the center (it is connected to the compressor shaft) of the compressor pulley is turning.

Sep 02, 2009 | 2000 Ford Focus

1 Answer

Aircon is not working properly if i speed up up 100kph.

The evaporator is freezing up. Check to make sure it's not low on freon.

Feb 27, 2009 | 1990 Mitsubishi Galant

1 Answer

What freon belongs in the a/c system?

This is a great site for aircon FAQ's:
It can show you how to check what gas you are using, how to check the system and how to top it up if neccessary, there is plenty of info and video if you need it.
I found it a great help when my wife had problems with the aircon in her Pontiac.

Sep 26, 2008 | 1995 Jaguar XJ6

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