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
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.
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
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.
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