Question about 2001 Mitsubishi Montero Sport 4WD

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AC coolant refill?

Hey, I heard you can simply refill the coolant and your ac is good as new... It is just blowing out cool air when set to ac, as opposed to freezing. Where is the coolant stored and how can I get to it?

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  • bmirna Aug 16, 2008

    the AC on my 2004 montero finally stopped working altogether . it worked only occasionally before .. and same story with the radio.

    so both are out of commission now

    when i push the ac button i can hear something ( compressor ?) starting, air blowing all works but no cooling at all.



    i had the battery removed over the winter , bit since then the ac worked ..



    i read posts about certain codes that have to be reset for the radio .

    but not sure what to make of all this



    any help is appreciated

  • mmperez17 Sep 29, 2008

    have the same problem with the radio (ONLY in winter). Anything under like 20 degrees of if I hit a bump my radio will shut off. I have to wiggle it or put a piece a paper under it to stabalize and it will power back on. However, have to enter the code everytime it goes off.



    In the summer no radio problems. It started after the battery was replaced and had to take it to the dealership to get the radio code with the VIN number. Cost me around $75 - $100 bucks for the code and reset of radio.

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You have to add freon to the ac to make it blow colder.you can tale it to any parts store and they can show you what you need to do

Posted on Nov 13, 2008

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My AC some times blows cool air with good pressure but most of the time blows air with low pressure. I have checked the AC pipe also. Its cool.


I'm wondering if it's NOT the AC but the blower fan, how does the heat side blow? if it's good on all blower settings then, it's more than likely your blender door is not opening and closing all the way. When the blender door stays open a little bit it'll let warmer outside air mix with the cold AC air causing it not to be as cold as it should.

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Check your coolant level.

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Are you saying the air coming out of the vents is not cold unless you are moving ? Or there is no air unless you are moving ?
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There is a valve that stops hot coolant from entering the heater box. It is probably stuck open. murf427

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If your AC cools the air at all, then it is probably not a serious problem ... you most likely need to have your AC system recharged. You can take it in to a mechanic to have it refilled (shouldn't be expensive or take a long time) or you can go to an auto parts store and do it yourself. When you are at the store, make sure you are getting the correct type of AC coolant (a lot of times it is still Freon ... but some auto-makers stopped using freon in the 90's ... the clerk at the auto-parts store should be able to tell you what type you need). If you are unsure how to fill the AC coolant, the clerks at the auto-parts store might be able to help, but if they can't grab a Haynes manual -- it has step-by-step directions and pictures to help you get the job done right.

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When I turn on the AC warm air blows through and never changes unless it's cold outside. Do I need to fiil or replace something?


Most probably just needs to have the AC serviced and refilled with coolant. Since the car is a '95. I had to bring in my to get the coolant refilled just a few weeks back and it is a 2004. We used to just call it a freon refill, but they don't use normal freon anymore, they use a coolant/refrigerant that is safer for the environment, but this doesn't matter for you. Just bring it in to your mechanic or to your dealer and have the AC serviced.

They should probably put in a dye as well to see if there is a coolant leak, If so, it is usually a very slow leak and repairing the whole AC unit wouldn't be worth it. Either way, it needs a fill.

Good luck!

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the car need to be recovered, vacuumed (checked for leaks), refilled after purging the refrigerant tank of air.

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When they refilled the refrigerant did they put die in it to check for leaks, it sounds like there may be a leak.

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