Ok, so as some of you may know I'm also having this issue on my X358 whereby I have a slight steering wheel tremble at any / all speeds, really annoying.

To date the bulk of the suspension bushes both front and rear have been replaced / renewed.
I have new wheels bought recently too ( suffered the same issue with the old wheels )
New tyres bought and fitted.
Front hubs fitted
Front wheels balanced and all A ok, actually checked them again as recently as a few days ago even though I knew them to be fine.
4 Wheel alignment done by Prestige Jaguar, all A ok too.

What am I missing, any ideas??
Thanks
Jim

 

Check the pinch bolt that connects the steering column to the car. May not be a probable cause but worth a shot to look at. I had previously removed the steering when I removed the dash. When I bolted everything back together I had strong wheel shakes especially when braking. I tightened the hell out of the pinch bolt took care of most of the shakes.

 

learn something everyday here

 

Thanks, worth looking into
Jim

 

Looks like you checked off most of my list, though I might have attempted road force balancing. Consensus is that it can uncover variations that static or dynamic can't. I have no proof of that statement personally.


Hubs would have addressed bearings.

I would add rack and pinion mounts and inner tie rods to the check list.

 

Can you reproduce play in the steering column with the key in but engine off (so the column is unlocked)? If so that pinch bolt would be my first place to look too. It is easy to get to - just remove the upper footwell carpet and it is clearly accessible where the upper and lower steering columns meet. One time when I took my dash out (which requires the upper column to be disconnected) I thought I had torqued the bolt back up properly but it was only finger tight and the wheel trembled badly whenever the car went over a bumpy surface and could move about 5mm either side before engaging with the lower column.

 

Thanks again guys, much appreciated, all ideas / suggestions welcome....

So far we have.....
1. check steering column pinch bolt
2. Steering rack mounts, inner tie rods

Please if there are any more, keep them coming, I really need to get to the bottom of this for my sanity....lol
Jim

 

I get a rattle via the steering column when the car goes over sharp bumps. Could this be this joint too ? I notice very slight play in the steering wheel when stationary.

 

Subframe bushings, maybe?

 

Thanks again guys, much appreciated, all ideas / suggestions welcome....

So far we have.....
1. check steering column pinch bolt
2. Steering rack mounts, inner tie rods
3. Subframe bushings

Please if there are any more, keep them coming, I really need to get to the bottom of this for my sanity....lol
Jim

 

FYI It takes alot to tighten all the way.
By hand it would feel that it is tight but give it a bit more.

 

Just a quick thing to try is swap the front and back rims as you may have a bent rim

If a front rim is bent you will feel it in the steering as a wobble. Depending on the damage this may get better or worse as speed increases.

IF you swap the rims and it changes the wobble the issue is a rim.

Have the same issue atm but I know its a pair of bent rims. Had a bad morning on the track the other week. In the first session delaminated a tyre and bent 2 rims (same side) rim using the ripple strip.

Im waiting on new tyres but have sent one of the bent ones off for repair. That will at least let me get the the new tyres fitted (all of the old ones are torn up from the trackday). Ill deal with the second bent rim after that.

Cheers
34by151

 

Unlikely a bent rim as the wheels are brand new ( only 3-4 weeks old ) and it's done it since I've fitted them and before then too, but thanks for the suggestion.

 

Don't know if you have replaced them yet, but check front upper control arms. I had bad steering wheel shake and when I replaced them (knew they were bad) it went away. I know it was them since every other suspension component had been replaced and these were the last thing to do. Also, I started to get wheel shake again recently, and a clunk, turns out one of the new arms ball joint is shot again (can feel the arm move and clunk by hand). So, if not done, check them out.

 

At this point you may want to check your power steering. You could have a problem with the pump and/or rack.

 

Thanks again guys, much appreciated, all ideas / suggestions welcome....

So far we have.....
1. check steering column pinch bolt
2. Steering rack mounts, inner tie rods
3. Subframe bushings
4. Front upper control arms
5. Steering rack

Please if there are any more, keep them coming, I really need to get to the bottom of this for my sanity....lol
Jim

 

I'm now dealing with this too. Whatever is happening seems to be emanating from the left front suspension. It lets out audible groans when going over big bumps at low speed. A little wheel wobble at 50-55 mph too. Stable anywhere else speed wise. Driving me nuts. I haven't been driving it this week though. I just fixed an emissions issue on the LS, so I've been putting miles on it to make sure it's ready to pass this week.

The groan I'm getting seems to be what many complain of on worn air dampers, but it didn't go away with the coil over swap. Recently it's gotten much louder and now the shimmy is starting. I still can't seem to figure out where it's from. I may just buy the whole bushing kit and replace all of them in the front end.

 

The groan could be the hub bearings. A easy check is while driving does the noise level change when turning?
Not scientific, but if noise levels change, it deserves further attention.

 

It only does it on bumps. Both front bearings have been replaced a year ago and it clearly does it with the up and down movement of the suspension. Before replacement the bearings sounded horrendous. I'm suspecting the bushings on the upper ball joint assembly, but planning to replace all front bushings soon. The steering of the LS has some slop in it too even though it only has 56k miles. I'm planning to do the same to it and it's starting to have a front bearing go out on it. I've got front brakes, bearings, and bushings to do on it now.

 

I'm starting to suspect this pinch bolt now as its has gotten absolutely violent. I get a knock over hard bumps but sometimes it's smooth as glass. The noise sounds like it's coming from the mid to lower dash area.