air conditioning Problem?!?!

Clint Reynolds · **Joined:** Mon Jun 16, 2008 12:46 am **Posts:** 41

Hi yall. I have been noticing a problem with my ac in my 04 kj. For maybe a year i will be running the ac and it will be cold and then all of a sudden it will stop. I turn on the heat and it seems like it thaws out. I turn back on the ac and works fine. Only does that on long road trips. Well this weekend, the ac was working fine on the way to our destination. 3 hours away. well on the way home it was working but stop blowing cold. turned it off and ran windows down. Checked out yesterday i turned it on the engine made a loud roaring noise. after 10-15 seconds it would stop. I noticed some brownish like specs on the alternator, the fan cover and on various parts on the engine. I was not oil. I would not rub off and the oil level was fine. Have not checked it yet, but I beleve that the pulley on the compressor is not rotataing and the belt is just running across it and creating friction. I believe that the substace found on the engine could be fragments form the bet.
**Not sure. But just my take on it.. I could really some feedback as to what this could be. Thanks so much.

mtn_goat · **Posted:** Mon Apr 11, 2011 11:34 am

If your compressor pulley did seize up, it would burn the belt up. You would have a lot of smoke coming from the engine bay!! It could be going out though. You can take the belt off and turn the compressor by hand to feel if it turns hard or has any rough/grinding spots. It should turn easily if there are no issues. I know several people have had their's go out.

Clint Reynolds · **Joined:** Mon Jun 16, 2008 12:46 am **Posts:** 41

Yea i was planning on doing that tonight. How much for replacing it if that is what it is? I know not cheap. Just maybe a ruff estimate of what you think. Thanks a ton. Ill keep u updated.

mtn_goat · **Posted:** Mon Apr 11, 2011 11:52 am

I haven't had mine go out personally, but alot of people end up replacing the clutch on the compressor. I looked up a clutch on www.wholesalemopar.com and they have a clutch for $211.75 (2004 with 3.7L). I'm sure you might find a better deal if you shop around. If it's the whole compressor than it runs $433.18 (same site). Hope this helps.

mtn_goat · **Posted:** Mon Apr 11, 2011 12:06 pm

Here are two previous posts about AC problems:

viewtopic.php?f=3&t=51534&hilit=air+conditioner
viewtopic.php?f=1&t=56143&hilit=air+conditioner

Clint Reynolds · **Joined:** Mon Jun 16, 2008 12:46 am **Posts:** 41

Thanks. Ill check these out. I also found some on ebay that are listed a new and have some that are listed as rebuilt. A new oone on there is listed at like $200. Not sure about them. here one of them.
http://cgi.ebay.com/ebaymotors/67576-NEW-AC-A-C-Compressor-FREE-Shipping-_W0QQcmdZViewItemQQfitsZYearQ3a2004Q7cMakeQ3aJeepQ7cModelQ3aLibertyQQhashZitem43a44532d0QQitemZ290518807248QQptZMotorsQ5fCarQ5fTruckQ5fPartsQ5fAccessories
think i did that right...

Anyways how much does a chop usually charge for installation of one. Thanks

mtn_goat · **Posted:** Mon Apr 11, 2011 12:31 pm

Computer security won't let me open the link. :roll:

Not sure what a shop would charge. They all have different hourly rates. :juggle:

It would also depend on weather or not the shop would have to recharge the AC system. They shouldn't have to recharge the system if it's just the clutch. I would guess that it would be 1-2 hrs of labor. :2cents:

Clint Reynolds · **Joined:** Mon Jun 16, 2008 12:46 am **Posts:** 41

ok thanks. I just pray that it is just the clutch.

mtn_goat · **Posted:** Mon Apr 11, 2011 12:37 pm

No problem. Good luck and let us know what it ends up being. :JEEPIN:

Clint Reynolds · **Joined:** Mon Jun 16, 2008 12:46 am **Posts:** 41

Well took it up the family mechanic and he said it is the compressor. Well if it aint 1 thing its another. He will not just replace the compressor, he does it all the way. New everything. He said he can do new everything compressor, condesor, hoses, I mean every new part and installation out the door for $905.83. Not bad for all that. I guess.

Clint Reynolds · **Joined:** Mon Jun 16, 2008 12:46 am **Posts:** 41

Well, I have a guy that works with me and is going to change it for me for a very awesome price.
Anywas, does the orifice tube come out any way or do we have to replace the whole line??

tjkj2002 · **Posted:** Thu Apr 14, 2011 11:12 am

Clint Reynolds wrote:

Well, I have a guy that works with me and is going to change it for me for a very awesome price.
Anywas, does the orifice tube come out any way or do we have to replace the whole line??

On a KJ you must replce the whole line to change the orifice tube.

And yes if replacing the compressor you must replace the reciever/dryer,orifice tube,and condensor(if built after 1991) to keep the warranty on the new compressor.

Clint Reynolds · **Joined:** Mon Jun 16, 2008 12:46 am **Posts:** 41

ok thanks i looked at it last night and looked like i would have to replace it as well. Well thanks so much.

Clint Reynolds · **Joined:** Mon Jun 16, 2008 12:46 am **Posts:** 41

Another question. what is the capacity of refirgerate used? thanks

WolverineFW · **Posted:** Thu Apr 14, 2011 10:21 pm

Clint Reynolds wrote:

Another question. what is the capacity of refirgerate used? thanks

There is a sticker under your hood that lists that information.

tjkj2002 · **Posted:** Thu Apr 14, 2011 10:29 pm

Clint Reynolds wrote:

Another question. what is the capacity of refirgerate used? thanks

Hope this is not a shade tree mechanic doing the work in his/your garage unless they have the required tools to do AC work.You can not "vent" R134A,must be recovered properly by a machine since it has been found it's a destructive as R12 is to the ozone layer.

Clint Reynolds · **Joined:** Mon Jun 16, 2008 12:46 am **Posts:** 41

Thanks. Na this guy knows what he is doing. He went to nascar school and was a motor mechanic for a NHRA dragracing team. Granted they dont have ac's in either. haha. He has all the required tools and has done several ac's before. Thanks though.

air conditioning Problem?!?!

Who is online