Yes, the broken bushing causes the whole knuckle to move back and forth during normal stop and go. The control arm also clunks up and down while riding over bumps and potholes. The movement will cause the wheel to be out of balance and will cause excessive tire wear of not addressed immediately.
Check control arm bushings and other suspension parts specifically front swaybar bushings- these were a known problem for Chrysler- your dealer stocks them
Strut mounts okay? Control arm bushings? Sway bar bushings? Sway bar links? Penetrating oil is a mans best friend. Spray one part at a time drive around a few days if the noise goes away then you found your problem.
Loose rear lug-nuts, bad wheel bearings, worn suspension bushings/struts, bent control arm, loose/damaged brakes.
you may have a transmission problem. See the axles will break to save the transmission from damage. Or you might need to change the bushings on the suspension.
I would suspect wheel balance is the problem but the steering and suspension system such as tie rod ends, pitman arm, idler arm, steering box, ball joints and control arm bushings if applicable should be checked also.
Front end is out of alignment and critical parts such as tie rod ends or bushings may be loose or close to failure, also bad wheel bearings can cause it. Often that kind of problem is caused by loose ball joints or worn suspension component bushings.
have you had your wheels balanced? Most XK8's have a common problem with the suspension bushings. The rubber they are made of is only good for about 5 years or 60,000 miles. After that the bushings get soft. The worst culprit is the upper shock bushing on the front suspension. Right now my car needs new upper bushings, but they are $150 to $250 each and the labor will run you twice that much. A couple of companies make kits to rebuild the bushing assemblies. That saves a little money, but it is still labor intensive.
were the struts put together right? squeek- possible control arm bushings clunk- spring pads "struts", control arm bushings, swaybar links or sway bar bushings, loose steering parts depending at what speed
depends on what the car is doin in order to narrow youre search. i would check for loosnes in the ball joints,inner and outer tierods,wheelbearings,sway bar bushings and links,control arm bushings and last but not least the struts them selves If you have air ride you need to check the air lines, compressor, dryer, solenoids, all of these will affect the air system. Go to Strutmasters.com and talk to one of their technicians. They can probably diagnose your problem and help with a solution :)
Your problem is the rear control arm bushings. This is a common problem with all 97-03 Pathfinders. There are 2 control arms per side in the rear. They all wear, however the lower control arm, which is right along the outer edges of the vehicle is the most prevalent problem. I'll bet you've also started to notice alot of side to side rear sway at highway speeds. These bushings get soft and worn and this leaves room for the metal components to move side to side or back to front as in your case. If you're a DIY'er, you can either replace the bushings for about $40 total in parts and 3 hours or so of labor, mostly removing the old bushings, or you can replace the whole control arm for about $100 per side and less than an hour of labor. If you bring it in, be prepared to shell out anywhere from $400 - $800 depending on where you live.
I had the same problem with my 1996 Pathfinder. I, like you chased after the sway by replacing the front struts, the rear shocks and having a four wheel alignment performed. I called my dealer to ask if they have seen similar 'sway' issues in other Pathfinders. From their response I gathered that this is a common problem with the Pathfinders. The fix for me was to replace 8 bushings in the rear suspension. Because these trucks have coil springs in the rear, they use upper and lower trailing arms (one upper and one lower on each side of the truck) to hold the rear axle under the truck. There is also a panhard bar, but I didn't replace the bushings in it. To have the dealer replace the bushings is a bit salty to say the least. The dealer will not replace the bushings. They will replace the entire control arm, 4 in all. I can't remember the exact price, but I think that the upper arms were around $130 each and the lower arms were something like $170 each plus the labor to install them. I opted to buy the 8 bushings and install them myself. Each bushing was less than $20. I will warn you that changing the bushings, although not complicated, is not an easy task. The bushings are a press fit into the control arm. A shop press of at least 20 tons is required to remove and install each bushing. I have access to a full machine shop so I was able to fabricate custom punches and holders for the control arms. Had I not had these holders and punches I would have likely bent the control arms and or destroyed the new bushings during their installation. I suspect that the dealer replaces the entire arm because it can be quite difficult and time consuming to remove the bushings and install new ones. I hope that this was helpful. This is just an update: (Oct 2008) Nissan (in Marietta GA) estimated $1300 to replace the 4 control arms. I bought the 8 bushings for $268 from the Nissan Parts dept. and Pep boys said they would replace each bushing for $50 each
If you fix the problem with your air suspension