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Unread 08-10-2007, 07:08 PM   #1
Allstar
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1992 YJ Wrangler 
 
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Driveline Vibration

I have a 92 with 185000+ miles on it. I bought it 2nd, 3rd hand, who knows and it has a serious vibration when under a load (you feel it accelerating and decelerating.) I changed both ujoints on the rear shaft but this has not helped. I found that when I serviced it for the first time the the transfer case was nearly empty due to a bad seal at the output shaft. I would like to know where I should look next. It has a 5 speed, could this be in the clutch? Thanks in advance.....

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Unread 08-10-2007, 07:18 PM   #2
rustywrangler
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Since you already serviced the tcase and took care of the ujoints, how about the motor mounts????

Also, PLEASE, fill out your rig specs in your profile so we know what you have. Is it lifted etc. Motor & trans at least.....
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Unread 08-10-2007, 08:02 PM   #3
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Thanks for the reply, it's updated. I want to fix this old jeep up for a daily driver. Gonna let my kid drive it in a couple of years.
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Unread 08-10-2007, 08:20 PM   #4
rustywrangler
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I would still look into the motor mounts and tranny mounts.
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Congenital Heart Disease is a reality for me, BOTH of my children have it. Please read up and become aware for future generations

Lydia Ann-Acquired 08/05/05 Open Heart surgery 08/10/05
Jacob Patrick-Acquired 01/17/08 Open Heart surgery 02/15/08
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Unread 08-10-2007, 08:22 PM   #5
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What would be the best way to check these?
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Unread 08-10-2007, 08:29 PM   #6
rustywrangler
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Well for me it was visual. The motor mounts should look solid, no cracks, and they should not be sitting lower into there mounts than the metal hoop over them. Youll see what I mean.

The tranny mount, is usally cracked or chewed up. Also you can grab the tranny or tcase and see if you can move back and forth. (this is obviously not a good way to do it because of the weight of what your trying to move) but it worked for me.

While you are looking at it, check your drive shaft again for any play at all. Check your ujoints again even though you replaced them.
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Congenital Heart Disease is a reality for me, BOTH of my children have it. Please read up and become aware for future generations

Lydia Ann-Acquired 08/05/05 Open Heart surgery 08/10/05
Jacob Patrick-Acquired 01/17/08 Open Heart surgery 02/15/08
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Unread 08-10-2007, 08:48 PM   #7
Allstar
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Thanks again, I'll check it tomorrow
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