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Old 07-27-2009, 09:51 AM   #1
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wheres the cold air???

The a/c on my 2000 TJ is blowing hot air no matter what setting I have it on.... anyone else experience this problem or have any suggestions on what the issue could be/a fix?

Thanks!

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Old 07-27-2009, 10:36 AM   #2
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When you turn on the AC can you hear the AC compressor kick on? If so it sounds like it might be low on freon.

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Old 07-27-2009, 12:31 PM   #3
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Or they blend door may not be switching. That can be either a vacuum issue or something is physically broken.
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Old 07-27-2009, 02:59 PM   #4
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The cheapest and easiest thing would be to try to refill the freon. Do you know how to do that?
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Old 07-27-2009, 03:13 PM   #5
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^^^ havent tried it but Its worth a shot...
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Old 07-27-2009, 05:36 PM   #6
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Yeah go to walmart or autozone or something and get a cheap can for less than $10. It will get cold within seconds if that's the problem. If freon is the problem, that means you have a leak. You can either refill it once or twice each summer or go buy a new AC. If you put freon in and it doesn't get cold, then you must have a different problem.
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Old 07-28-2009, 12:18 AM   #7
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The parts stores sell a recharge kit that has a seal conditioner/leak stop product in it. If you have a small leak or seals that are leaking it may fix that. The kit even comes with a DVD showing you how to do the entire charging process.
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Old 07-28-2009, 09:45 AM   #8
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Havent popped the hood yet since starting this thread but is it easy to locate where to add more freon?
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Old 07-28-2009, 10:05 AM   #9
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if the system has not lost the charge then you will do harm by adding more! Turn the system on , let it run for several minutes and check that the clutch is turning and the hoses going thru the firewall should be different temps.
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Old 07-28-2009, 12:56 PM   #10
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sry to highjack but why ac will blow cold for like 10 or 15 minutes and then blow hot ?
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Old 07-28-2009, 04:27 PM   #11
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AB - before doing anything or replacing anything - turn the AC on, let it run a few minutes - feel under the hood - one of the hoses and the drier should feel very cold.
If yes, look at the blend door, if not, see it ALL the front of the compressor is turning. If the clutch doesn't engage - low freon etc, you need a recharge.
Don't just arbitrarily add freon - you can ruin do damage - even hurt yourself.

Loic - blowing cold then hot could mean the freon's low. Check it before adding any.
Could also mean it's icing up - inside or externally.
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Old 07-28-2009, 05:28 PM   #12
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i've got a 98 tj, bought it used, and the ac didn't work. the freon pressure was fine. turned out to be the clutch coil (not sure if that is the correct tech. name) on the compressor. it didn't energize, thus it didn't engage the clutch. i think it cost me around $200 for the coil, only the dealer carried it. i spent a couple of hours to replace it, and it works like new. a buddy of mine had a 97 tj with the same problem, and we went ahead and fixed his.
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Old 07-28-2009, 08:37 PM   #13
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Thanks for all the suggestions... is there a diagram anywhere out there of the blend door, compressor, and clutch??.. The jeeps new to me just want to make sure I know what I am looking into!

Thanks!
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Old 07-29-2009, 08:35 PM   #14
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Its been pouring all day so no chance to pop the hood... One thing I noticed playing with the A/C today is that if I have it on the coldest setting it is just blowing air, not hot, not cold but just about a standard temp... however if I turn the temperature to the red the air coming out gets hot... So the temperature of the air is changing when I go from cold to hot however the cold setting just is not cold at all... Does anyone know if this sheds any light??....

Also where in the engine is the a/c compressor located??
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Old 08-10-2009, 11:55 PM   #15
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Quote:
Originally Posted by chewy View Post
i've got a 98 tj, bought it used, and the ac didn't work. the freon pressure was fine. turned out to be the clutch coil (not sure if that is the correct tech. name) on the compressor. it didn't energize, thus it didn't engage the clutch. i think it cost me around $200 for the coil, only the dealer carried it. i spent a couple of hours to replace it, and it works like new. a buddy of mine had a 97 tj with the same problem, and we went ahead and fixed his.


just came back for a 500+ miles round trip, and I find out that when I turn on the a/c , the clutch doesn't engage but if I tap a little on it it just start spinning. how can I fix that ? ( also it seems the jeep loose power when the a/c is on...)

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