I'm a fairly new CRD owner and last month I had a problem with my power mirrors,and after placing a posting on this site about it,several of you lead me in the right direction and I was able to resolve the issue. Just yesterday,on my return home from a long trip,my crd began vibrating at around 50mph,on decelaration,which had me very concerned.Well when I got home I came back to this site and searched "vibration" and guess what? I stumbled on a few posts where the complaints were exactly the same of what I was experiencing- a rumble strip noise,along with a bad vibration, all the way down from 50mph to a stop,and the "diagnosis" was a bad rear U-joint! Guess what,i was able to sleep much better last night,and this morning, I stopped by my mechanic and told him" Rob ,I have a noise and vibration coming from the drivetrain and the guys in the Liberty CRD forum said that it is a bad rear U-joint.I got a call later in the day from him saying"yep! you had a frozen joint in the rear.$84 later,I was driving the CRD out of the shop,trouble free.
Thanks guys!what a wealth of technical information...

While I only offer a small fraction of help, You welcome and enjoy that Jeep

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2006 LTD Bright Silver loaded with all the needed mods, CCV intact.
Proudly supporting CRD vendors, and their development of quality parts and accessories.
Equipped with HDS thermostat, plenty of heat, faster warm-ups, increased fuel mileage.