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Old 03-16-2007, 02:02 AM   #1
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Two problems with my 1987 wrangler. HELP PLEASE!

I have a 1987 Jeep Wrangler with 4.2 and a Peugot BA/10 5-speed transmission. I don't have much more on it, shackle lift and 31x10.50x15 FG All-terrains. The first problem is that when I put it in 4wd hi or low and move much at all it will thump or shutter every ten feet or so, but I'm not sure if it is really all that consistent. The last time I did any wheeling before this problem I was in an area that I had been through a few times before. It is near the Rio Grande and had some deep sand that had never given me problems before, but this time I had more weight(another person and full tank of gas) and it had rained recently. Anyways for some reason or another I got bogged down and it started to dig in. I put it in low, and started to keep going forward, but lost traction. So I started going reverse to forward and when I got any speed going forward I went hard on it. Right before I got going again I heard and felt a pop from the drivetrain. I didn't notice anything right after I got out, but the next time I tried to put in four I had this thumping, and I'm not really sure what it Is, but I did have some thoughts on it. I would really like anyones opinion on this one.
Also after this I was on a four hour highway trip and why I got back down to surface street speed I had weird noise like a grinding whenever I am moving. I don't really have any clue what this is and really need help on it.
Any help would be greatly appretiated, I will give you any info that can help. Please keep it mature and inteligent.

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Old 03-16-2007, 06:01 AM   #2
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Pull the drain plugs in your differentials and your transfer case, check for metal chunks.
sounds like you popped a tooth on a ring gear in the front end or perhaps a gear in the transfer case.

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Old 03-16-2007, 11:09 AM   #3
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That would be my guess as well. You may want to have a look at your u-jounts too.
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Old 03-16-2007, 02:24 PM   #4
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yea i agree with skeeter, check for shavings, chunks, crap like that
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Old 03-16-2007, 05:43 PM   #5
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If I did pop a tooth how much would it cost for me to fix it? I am going to check to U-joints first cause a guy told me that he had a similar thing happen and he had over stressed the bolts in the straps or the bolts. I have changed out the u-joints once and I am hoping that is the problem, but I don't think it is a going to be the only problem.
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Old 03-16-2007, 06:34 PM   #6
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I have no idea what it would cost if you need to take it to someone to have the work done. it'll all depend on thier shop rates and waht damage has actually been done.
I hade a rear end rebuilt in Amy's old YJ about 10 years ago and it cost about $300
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Old 09-11-2011, 07:00 PM   #7
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popping

check your transfer case for metal,the np231,needs a lowering kit from quadreatec,all angles on wranglers where set up for pretty trucks,not for hard use,,,cj rules.
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Old 09-11-2011, 10:08 PM   #8
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You are replying to a post from 2007 just for an opportunity to bash YJs. That is pretty harsh OldJeepLover.
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Old 09-11-2011, 11:19 PM   #9
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Looool
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Old 09-12-2011, 03:46 AM   #10
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OMG!!!! I got an email and was trying to figure out when I had subscribed to a post on here about an 87 with 2 problems, but it seemed vaguely familiar so I looked and I see someone has brought a 4yo thread from the dead!!!! I can't believe it!

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