Question about 2004 Kia Sedona

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The ac blows air but its not cold. freeon has been added and has been charged.

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There are many common issues with the ac there is a thermostatic switch (thermistor) that goes bad it keeps the evaporator from freezing up and will interrupt compressor relay power. there is another common probwith the triple switch located on the reciever dryer. there are other problems but them are common there is also a tsb about charge capacity.

Posted on Jun 27, 2009

  • carl Jul 02, 2009

    you can check the thermistor behind the glove box you have to use a voltmeter I believe there are three different connections it should be the one with two wires cant remember the colors. I am glad to here you checked the clutch because it is magnetic but they have a problem with the coil going out. did you check the relays. That ac system is something else I do know the triple switch (high pressure, low pressure, and medium) is about 96 dollars and stocked well at the dealer if that tells you anything, not to mention all the complaints about a humming noise from the ac wich is related to the ac bracket that they know have a new bracket for.

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It may just need a charge of refrigerant and be checked for leaking

Posted on Jun 22, 2009

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Hi Diagjunkie, I like your answers, my Sedona shows the AC is on inside but doesn't activate the compressors magnetic clutch?
When I feed a live supply from the battery to the clutch it operates fine but still dosn't chill the car (so I'm guessing the compressor is fine) so which issue do you think I have and where can I find the thermistor to check it?
Cheers

Posted on Jun 30, 2009

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Posted on Jan 02, 2017

  • 185 Answers

SOURCE: Just replaced the ac compressor and the ac was

I do not understand why you keep reposting the same question. The answer that I provided on the 2nd post is the ONLY possible answer, unless you added 2 more cans after it stopped blowing cold - then your system is definitely overcharged. To diagnose your issue, you MUST inspect the system for a leak using a UV lamp and the correct light filter glasses. There is no way around it.

Posted on May 10, 2011

  • 148 Answers

SOURCE: AIR CONDITIONER ON 2002 JEEP LIBERTY IS LEAKING

its probley leaking in the evaporator you cannot see it without removing the dash see if anyone that you know has a freon sniffer then lacated the drain tube for the evaporator case most of the time its located on the fire wall on the right lower area with a full charge use the sniffer and see if indicates a leak

Posted on Jul 18, 2009

Obertelli
  • 3006 Answers

SOURCE: the ac blows hot air already checked the freeon

There's little else you can do then as all the other possibilities require professional attention.

Most common causes are a failed a/c clutch unit or a failed pump. It might even be a failed a/c pump drivebelt, but as that usually also drives other things such as the power steering and alternator (on most vehicles) you'd have noticed other problems as well.

Getting an estimate is cheap, but the work itself usually isn't, but at least an estimate (or three, shop around) will enable you to make an informed choice as to what to do next. When I lived Stateside it was amazing how many otherwise perfectly good cars were in wrecking yards simply because a/c had failed and repairing it was more than the vehicle's value.

Posted on May 25, 2010

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Just replaced the ac compressor and the ac was blowing cold air and now a month later it is not blowing cold air. 2 cans of freeon was put in. What can it be?


I do not understand why you keep reposting the same question. The answer that I provided on the 2nd post is the ONLY possible answer, unless you added 2 more cans after it stopped blowing cold - then your system is definitely overcharged. To diagnose your issue, you MUST inspect the system for a leak using a UV lamp and the correct light filter glasses. There is no way around it.

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First make sure you pressed the button for the air to circulat internally and the blue air conditioning button is drepressed. If you still don't get cold air,open the hood and see if your ac belt is present. If it is there, make sure it is not slipping. You can mark it with a red permanent marker when the engine is off. If it is spinning make sure the ac clutch is enganging. With your engine on see if the ac clutch on the side of the ac compressor move a little showing it is engaged. It will also load your eninge and there will be a slight difference in speed which you can hear. If all of these are working you most likely need a freeon charge. However, first you will need to check that there is not a leak withing the ac system. This is done by mechanics using a dye. Once the leak is located, it is repaired and freeon is charged into the system. Thanks for using Fixya.

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Freeon is good dont know what else it could be. when its cold out the ac works fine but when its hot it doesn't blow cold? WTF


The ac will blow sold when its cold outside.It is just the air from the outside. You need to check to see if the ac clutch is turning when the ac is switch own.You may have a bad ac compressor

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AIR CONDITIONER ON 2002 JEEP LIBERTY IS LEAKING FREEON SOMEWHERE IT WILL COOL FOR FOUR DAYS AFTER CHARGING WITH FREEON AND THEN IT BLOWS HOT AIR. NO LEAK VISABLE WHEN I ADDED FREEON DYE. WHERE COULD THE...


its probley leaking in the evaporator you cannot see it without removing the dash see if anyone that you know has a freon sniffer then lacated the drain tube for the evaporator case most of the time its located on the fire wall on the right lower area with a full charge use the sniffer and see if indicates a leak

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Air conditioner blow warm air after freeon


you could have a leak in the ac system which would be why you had to add freon. take it to a repair shop and ask them to check fo rleaks because adding more freon wont fix your issue if there is a leak.

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