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Unread 08-23-2010, 01:38 PM   #1
scott_jeep
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1996 XJ Cherokee 
 
Join Date: Jul 2009
Location: Boston, MA
Posts: 448
Vibration/shaking/rubbing under drivers seat?

For a couple months I've had a squeaking noise coming from the front wheels that would occur only when turning left/right and speed up/slow down as I did. It also only happened when driving forward and never when it was raining out. Well that turned into a sort of grinding last week so I figured it was time to replace my front axel u-joints.

However yesterday I started getting a weird vibration/rattling/thumping that I can actually feel through the floor boards. Its not down by the pedals but rather up where my none driving foot sits, roughly in line with the shifter/e-brake area. It occurs more often when going up hills and I can feel and hear it bounce around when I hit bumps in the roads. It reminds me of a fiberglass boat rubbing noise. When standing still with the transmission in park it makes no noise but as soon as I shift to park (still standing still) the noise and vibrations start. I can also feel it vibrating with the sound of my exhaust when I first pull away from stop signs or stop lights.

Is this all from the u-joints or could it be something else? I checked the track bar and everything seems to be tight. Not sure if its related but my front inner axel seals have been leaking pretty bad for awhile but I've been waiting to replace them with the u-joints.

BTW its a stock 96 XJ.

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Unread 08-23-2010, 02:04 PM   #2
CJ7-Tim
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2000 XJ Cherokee 
 
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Location: out in the garage - Minneapolis, Minnesota
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Inspect the control arm bushings and motor mounts.
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Unread 08-23-2010, 03:32 PM   #3
scott_jeep
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1996 XJ Cherokee 
 
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Location: Boston, MA
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Quote:
Originally Posted by CJ7-Tim View Post
Inspect the control arm bushings and motor mounts.
Just took a peek at the motor mounts and the ends of both sides of each mount look like below. I'm assuming the rubber is supposed to be a full circle rather than the cones I have on each side? Could that be causing my issue?

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Unread 08-24-2010, 08:34 AM   #4
scott_jeep
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1996 XJ Cherokee 
 
Join Date: Jul 2009
Location: Boston, MA
Posts: 448
What transmission mount should I go with? Just a stock OEM replacement like this one from 4wd hardware?

Transmission Mount by Crown Automotive and Other Jeep Parts and Jeep Accessories by 4 Wheel Drive Hardware-RH1
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