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Unread 05-20-2014, 07:21 AM   #1
GreggM
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Join Date: May 2014
Location: Chesterfield, Mi
Posts: 2
New to the Forum and An Odd noise in the Back

Purchased a 2005 Liberty for my wife a few weeks ago. Overall we are happy with the car. It has under 60K on it. Liberty has the 3.7 4wd and is in good shape. When braking and coming to a full stop there appears to be a thud in the back. It's nothing i've heard before. Any clues will help.

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Unread 05-20-2014, 09:50 AM   #2
Tombo_ontario
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2002 KJ Liberty 
 
Join Date: May 2014
Location: Windsor, Ontario
Posts: 14
I think from I've come across is that it's either loose bushings in the rear lower control arms, the a-arm, or perhaps a worn u-joint. Further, it could just be that the slip yoke needs to be greased up, though you would also probably feel a thud or or something upon acceleration...
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Unread 05-20-2014, 10:17 AM   #3
brendanc
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2002 KJ Liberty 
 
Join Date: Jul 2009
Location: Alexandria, VA
Posts: 238
Quote:
Originally Posted by GreggM View Post
Purchased a 2005 Liberty for my wife a few weeks ago. Overall we are happy with the car. It has under 60K on it. Liberty has the 3.7 4wd and is in good shape. When braking and coming to a full stop there appears to be a thud in the back. It's nothing i've heard before. Any clues will help.
With the car in neutral on a flat surface, get someone to rock the car forward and back, while you watch the rear suspension. If there is a lot of play in the rear tri-link (rear upper control arm, big boomerang thing with a ball joint... attaches to the rear diff), then you need to replace it. It could also be the lower control arm bushings (two for each arm).

It could be the U-joint too, but you would likely have vibrations and other noises on acceleration.
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Unread 05-20-2014, 10:55 AM   #4
remmons
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2002 KJ Liberty 
 
Join Date: Mar 2010
Location: Vernal, Utah
Posts: 1,658
Quote:
Originally Posted by brendanc View Post
With the car in neutral on a flat surface, get someone to rock the car forward and back, while you watch the rear suspension. If there is a lot of play in the rear tri-link (rear upper control arm, big boomerang thing with a ball joint... attaches to the rear diff), then you need to replace it. It could also be the lower control arm bushings (two for each arm).

It could be the U-joint too, but you would likely have vibrations and other noises on acceleration.
X2.

Mine currently is the worn Ball Joint on the upper link. I just haven't gotten around to replacing it yet.
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Unread 05-20-2014, 11:18 AM   #5
GreggM
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Join Date: May 2014
Location: Chesterfield, Mi
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Thanks for the hints. I'll check it out when there is no threat of rain... LOL said to wife "my 91 renegade doesn't make those noises" :-)
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