Front end Bushings

After reading a few post, I thought I would ask about front end bushing.  My 2002 XJ8VD has 96,000 miles on it.  I had the front end checked at a local tire store which said things were fine.  When I run over bumps though I do hear a funny noise. Can the bushing be bad, yet test good?
 
I noticed that air suspension was mentioned.  Do I have that on my vehicle?
 
Thanks in advance!

Shocks maybe need replacing...Or struts..whatever that car is set up with...take it to a JAG specialist.

As Dennis said, the people at the tire store wont really know what they are
looking at.
The bushings can split. No real test. If they are split we replace them.
the shocks can make noise. Look at the upper chock mounts. There should be
a nice round orange bushing in the black plate on top of wheel well. If that is gone
could be causing your noise. They crumble.
I advise again doing front shocks yourself due the high tension of the spring.

hi
its usually the bottom shocker bushes that cause the knocking over bumps

Also the stabiliser bar bushings being misalingned or outward movement of them on the bar can cause knocking noises over bumps etc
 
Mark in Ga

My input 10 days later...I had noisy sloppy front end when I took possession of car.  Jag Service found bushings or lack of them. Car is much tighter now but I still have a rear noise to tend to. Getting there slowly...
 
Tom 

My 2001 XJ8L is doing the same thing at 66,000. Seems like little bumps cause a thud or pop in the front more than big ones do. If I go slow and move the steering wheel from side to side it thud-thud-thuds to. Sounds like something rolling around in the trunk sort of. I'm guessing by the posts I have read here and others its the sway bar bushings? My friend is an accomplished mechanic, just not a Jag mechanic. Is this something he could do?

thanks,

ray

Hey Ray,
You should ask your buddy to look at your car. The bushings weren't very expensive even at the dealer when I had my replaced, so if he could fix it for you then it would be that much more inexpensive. It made a big difference in noise reduction on my car. It doesn't sound so "ghetto" any more.
 
Tom 

Front swaybar bushings misaligned/worn is one possiblity of noise in "front" of car as well as the above already mentioned
Also lower steering column shaft is another possiblity of noise over bumps and during slow speed braking as in a parking lot

agree with ibjags.. the front swaybar bushings.. make a hollow sounds in the floor.. and there easy to replace and there only like $9 each fro the dealer and take 5 min to replace..  i wud throw those in.