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Old 09-21-2015, 03:49 PM
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Old 08-21-2015, 10:57 AM
  #50866  
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Originally Posted by KY_Bob
I have a 2000 4.0 L XJ with auto transmission. A few years ago I had the air conditioning condenser behind the dash and the compressor replaced and the system recharged. It ran cold air like a champ. This summer it is not as cool and I can hear a gurgling sound when I turn it on. Sometimes it is colder than others but it never blows hot air.

Do I need just a recharge or does this indicate something else?
Anyone?
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Old 08-21-2015, 11:14 AM
  #50867  
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Originally Posted by KY_Bob
Anyone?
A gurgling sound makes me wonder if it could be a vacuum issue. Do your vents work, or just your defrost?

If you do need a recharge, it means you have a leak somewhere. A dye test would answer that question
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Old 08-22-2015, 10:49 AM
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Okay so I did some looking but couldn't find what I was looking for. I have a 2000 xj. Just noticed yesterday I got a knock in my engine and it don't sound to healthy. I know there's a few things it could be. But is there anything in these 4.0s that are known to go bad that I should look at first before I rip and tear into it??
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Old 08-22-2015, 11:02 AM
  #50869  
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Originally Posted by Rcaggiano
Okay so I did some looking but couldn't find what I was looking for. I have a 2000 xj. Just noticed yesterday I got a knock in my engine and it don't sound to healthy. I know there's a few things it could be. But is there anything in these 4.0s that are known to go bad that I should look at first before I rip and tear into it??
Look into the 0331 heads on 2000-2001 engines.
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Old 08-22-2015, 11:46 AM
  #50870  
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Originally Posted by XJwonders
Look into the 0331 heads on 2000-2001 engines.
Dang it wonders you beat me to it! I was making breakfast and coffee first, then I was gunna sit down and write those exact words lol! Oh well.
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Old 08-22-2015, 11:53 AM
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Originally Posted by StuckBuck
Dang it wonders you beat me to it! I was making breakfast and coffee first, then I was gunna sit down and write those exact words lol! Oh well.
Real men don't eat food.
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Old 08-22-2015, 12:02 PM
  #50872  
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Originally Posted by XJwonders
Real men don't eat food.
LOL! But they do drink coffee!
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Old 08-22-2015, 12:41 PM
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Originally Posted by StuckBuck
LOL! But they do drink coffee!
I don't. I drink liquid Mercury
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Old 08-22-2015, 12:41 PM
  #50874  
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Originally Posted by NewKindOfClown
A gurgling sound makes me wonder if it could be a vacuum issue. Do your vents work, or just your defrost?

If you do need a recharge, it means you have a leak somewhere. A dye test would answer that question
I recently went through the vacume lines and all the vents are working. I guess I'll take it somewhere and have the pressure tested.
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Old 08-22-2015, 04:12 PM
  #50875  
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I have a '92 XJ 4x4 with an AW4 transmission that is pretty much toast ; it's attached to a NP231 transfer case that seems okay. My question is: Would an AW4 from a later model XJ ('93-'01) fit and function with no trouble? Also, would I be able to swap the NP231 transfer case for the NP242 with no trouble?

Any knowledge or insight is appreciated, thank you.
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Old 08-22-2015, 05:06 PM
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Originally Posted by Alttrav
I have a '92 XJ 4x4 with an AW4 transmission that is pretty much toast ; it's attached to a NP231 transfer case that seems okay. My question is: Would an AW4 from a later model XJ ('93-'01) fit and function with no trouble? Also, would I be able to swap the NP231 transfer case for the NP242 with no trouble?

Any knowledge or insight is appreciated, thank you.
U can use aw4 transmissions up to '96. Newer aw4 would require modifications to make it work.

I know somebody who swapped a '99 aw4 into a 95 drivetrain. He swapped the extension tailhousing with wiring on it along with a collar that sits on the tailshaft.
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Old 08-22-2015, 06:17 PM
  #50877  
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Originally Posted by XJwonders
I don't. I drink liquid Mercury
Fine you win
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Old 08-22-2015, 06:25 PM
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Originally Posted by XJwonders
I don't. I drink liquid Mercury
Well that answers alot of my questions about your sanity...
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Old 08-22-2015, 06:44 PM
  #50879  
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Originally Posted by DucMan
Often the Cat. breaks up plugging muffler and making a "HotSpot" that burns out into a leak take your fist and beat on muffler and Cat. with the heel of your hand.... listen for rattles... possible bad Cat. The plugging will drop power... happens occasionally after hard run
So this wound up being my problem. The CAT was fried. I replaced the CAT with a Flowmaster high flow CAT and the Muffler with a Flowmaster Super 44. I also installed a new O2 sensor. I knew the second I started the jeep that the problem had been resolved. It is performing better in every way. Thnx for the solid advice.
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Old 08-22-2015, 08:01 PM
  #50880  
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Originally Posted by drhoward1988
Well that answers alot of my questions about your sanity...
well u should ask anyway, it's not good to assume
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