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Old 03-11-2012, 11:23 PM   #1
Join Date: Feb 2012
Posts: 31
Pop's in 4wd

89 wrangler

I was climbing a sloppy hill today and stopped to engage the 4wd and when I started back up the hill I heard a loud bang and felt a jerking or skipping in the drivetrain. I slowly kept going through the sloppy part...the whole time banging and jerking. Once through it I put it back in 2wd and it was fine. I got it home and crawled under it to check for broken U-joints or any play and they all seemed to be fine to me all the way to the outer U-joints. Engaged and dis engaged and drove forward and reverse and still here the bang when in 4wd....also I forgot to mention that when I first heard it I though maybe it wasnt all the way into 4wd so I stopped and tried again and pulled the shifter right out of the boot so I had to crawl under it and put it back on. It feels like its under my feet where the t-case would be

would love some help....think it might be the t-case chain is too stretched and skipping?

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Old 03-12-2012, 12:55 AM   #2
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Location: El Cajon
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Do you have any audio clips of said happenings?


2.5L Genius of some sort.
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Old 03-12-2012, 09:46 AM   #3
Join Date: Feb 2012
Posts: 31
no I dont...not sure how I would get one
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Old 03-17-2012, 05:41 PM   #4
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Join Date: Sep 2011
Location: San Diego, CA
Posts: 12
Im having the same issue in my 99, found it the same way as well. Engaged 4wd to go up a hill, loud noise and jerking. Took it to a local shop that i trust and they got in the jeep tried to engage 4wd and same thing happened. They have a couple ideas of what it could be, as of now im going to take my jeep into them and their going to open up the T-case and check for worn out parts. Ill let you know what the shop finds...
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Old 03-17-2012, 06:03 PM   #5
Join Date: Feb 2012
Posts: 31
Please do....I'm pretty sure mine is the chain
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