Clunking sound - JeepForum.com
Search  
Sign Up   Today's Posts
User: Pass: Remember?
Advertise Here
Jeep Home Jeep Forum Jeep Classifieds Jeep Registry JeepSpace Jeep Reviews Jeep Gallery Jeep Clubs Jeep Groups Jeep Videos Jeep Events Jeep Articles
Go Back JeepForum.com > Models > Jeep Liberty Forums > KJ Liberty Forum > Clunking sound

End of Summer Sale, 20% OFF!2007 - 2011 Jeep JK Long Arm Lift KitsIntroducing MONSTALINER™ UV Permanent DIY Roll On Bed Line

Reply
Unread 05-02-2012, 10:57 AM   #1
gcotterl
Registered User
2004 KJ Liberty 
 
Join Date: Aug 2006
Location: riverside ca
Posts: 53
Clunking sound

Ever since my 2004 Jeep Liberty was new, a "clunking" or "bottoming-out" sound has come from the rear end when I drive over speed bumps (or humps); through parking lots with uneven surfaces; over railroad tracks, etc. It seems more noticeable at slow speeds (less than 10 MPH) than higher speeds.

In December 2011, I had installed:
4 new Michelin tires
front and rear shocks & struts
Old Man Emu coil springs on the front

What might be the cause of the noise?

gcotterl is offline   Reply With Quote
Unread 05-02-2012, 10:56 PM   #2
brittee
Registered User
 
Join Date: May 2012
Posts: 3
You may have a broken motor mount
brittee is offline   Reply With Quote
Unread 05-03-2012, 11:37 AM   #3
gcotterl
Registered User
2004 KJ Liberty 
 
Join Date: Aug 2006
Location: riverside ca
Posts: 53
Last time I looked, the motor and the motor mounts were under the hood (at the front of my Liberty) not at the rear where the "clunking" sound is coming from.
gcotterl is offline   Reply With Quote
Unread 05-03-2012, 01:51 PM   #4
chachums
Registered User
2004 KJ Liberty 
 
Join Date: Nov 2011
Location: Churchville, Pennsylvania
Posts: 107
check the strut, i had a strut make the sound like that and i found out it was improperly manufactured, my mechanic took it apart reassembled it and it was good to go.
__________________
'04 Jeep Liberty
K&N Intake, Flowmaster Super 88 muffler.
OME NS131 Front Struts, OME927 H/D front Springs, Strut Top Plates; Rear OME948 H/D springs, OME132L Rear Long Travel Shocks and pair of rear extended bump stops.
chachums is offline   Reply With Quote
Unread 05-03-2012, 02:50 PM   #5
jeepkj617
Registered User
2002 KJ Liberty 
 
Join Date: Aug 2010
Location: Quincy, Mass
Posts: 246
It is going up that you hear it or coming back down? aka it is as soon as the rear axle hits the speedbump or when it comes off it
__________________
"What do you mean it don't work? Just hit it with a bigger hammer!"

Thinking about buying a Cobra® 29-LTD 2-Way 40-Channel CB Radio. Anyone have install/antenna suggestions?
jeepkj617 is offline   Reply With Quote
Unread 05-03-2012, 02:53 PM   #6
gcotterl
Registered User
2004 KJ Liberty 
 
Join Date: Aug 2006
Location: riverside ca
Posts: 53
According to WIKIBOOKS, the Jeep Liberty has:
STRUTS in the FRONT
SHOCKS in the REAR.

The "clunking" noise is coming from the rear.

As I mentioned in my original post, in December 2011, I had:
new struts and coil springs installed in the front
new shocks installed in the rear.
gcotterl is offline   Reply With Quote
Unread 05-03-2012, 03:36 PM   #7
tjkj2002
Registered User
2002 KJ Liberty 
 
Join Date: Dec 2009
Location: Colorado
Posts: 8,094
Quote:
Originally Posted by gcotterl View Post
According to WIKIBOOKS, the Jeep Liberty has:
STRUTS in the FRONT
SHOCKS in the REAR.

The "clunking" noise is coming from the rear.

As I mentioned in my original post, in December 2011, I had:
new struts and coil springs installed in the front
new shocks installed in the rear.
The KJ uses coilover assemblies in the front,so yes it has front and rear shocks.Struts have no upper control arm and the KJ has a upper control arm.Plus a strut requires a top rotating plate as a strut is a structural part of the suspension,the KJ's front coilovers have no such rotating plate.

For the clunk in the rear check the upper rear shock bolts,they need to be very tight.


On a side note why only lift coils on teh front and not add the matching rear OME coils
__________________
'02 Liberty sitting on 35" tires,HP44,RockJock60,and AtlasII t-case
tjkj2002 is online now   Reply With Quote
Unread 05-03-2012, 04:02 PM   #8
gcotterl
Registered User
2004 KJ Liberty 
 
Join Date: Aug 2006
Location: riverside ca
Posts: 53
I will check the upper rear shock bolts.

Re: Last December, I replaced all 4 factory-installed Goodyear Wrangler SR-A tires with 4 new Michelin LTX M/S2 tires -- same size, same inflation, mounted on the same rims -- but when I turned the steering wheel all the way to the left or right, the Michelins rubbed on the inside liner of the front wheel wells.

Assuming that the OEM shocks and struts had sagged over the 7 years, I had Monroe Sensa-Trac 71577 struts installed on the front and Monroe Sensa-Trac 37203 shocks installed on the rear. But the Michelins still rubbed on the front wheel wells so I then had the OME coil springs installed on the front.
gcotterl is offline   Reply With Quote
Unread 05-03-2012, 08:11 PM   #9
cooltoolguy
Registered User
2001 TJ Wrangler 
 
Join Date: Feb 2008
Location: New Jersey
Posts: 40
this may be a far reach but... you said since new this has made that sound. soo probably could rule out suspension? try looking up inside the driver rear fender where fuel filler is, i believe there is a large plastic vent type canister up there hooked to the evap system, maybe its loose? knocking the inner fender liner or body? maybe the jack is loose under rear seat? just tossing ideas .....
__________________
2001 tj sahara, 2002 liberty renegade
1995 yj soon to get LT-1
1988 YJ laredo with 4.0 swap and western plow
2003 GMC CC D/A Dually (daily driver) , 2003 Kawasaki ZX12R
cooltoolguy is offline   Reply With Quote
Unread 06-12-2012, 09:29 AM   #10
gcotterl
Registered User
2004 KJ Liberty 
 
Join Date: Aug 2006
Location: riverside ca
Posts: 53
Clunking sound

On May 3, 2012, jeepkj617 asked if I hear the "clunking sound" when the rear axle hits the speedbump or when it comes off it"?

The clunking sound occurs when the rear axle comes off (comes down from) the speedbump.
gcotterl is offline   Reply With Quote
Unread 06-12-2012, 11:24 AM   #11
tommudd
Registered User
2004 KJ Liberty 
 
Join Date: Aug 2008
Location: Central OH/ Moshi Tanzania, Ohio/Tanzania
Posts: 4,196
Quote:
Originally Posted by gcotterl View Post
According to WIKIBOOKS, the Jeep Liberty has:
STRUTS in the FRONT
SHOCKS in the REAR.

The "clunking" noise is coming from the rear.

As I mentioned in my original post, in December 2011, I had:
new struts and coil springs installed in the front
new shocks installed in the rear.
And you trust what is on WIKI? Its only as good as the information that is put on it, which at times is not worth anything
__________________
04 Liberty, Kilimanjaro Edition, Rock Lizard RockRails/Roof Rack/Front-Rear bumper,32 inch Goodyear Duratracs,Moabs,4.10s/ 4.25 inch JBA Coilover lift /other goodies
tommudd is online now   Reply With Quote
Reply
Thread Tools


Suggested Threads





Jeep, Wrangler, Cherokee, Grand Cherokee, and other models are copyrighted and trademarked to Jeep/Chrysler Corporation. JeepForum.com is not in any way associated with Jeep or the Chrysler Corp.