Ubetit

Mine has been doing this for 2 years. I've had 4 sets of wheels, new pumpkin, new cv joint, and new rotors and pads. Up next is to balance the driveshaft. My vibration oscillates as well.

therealciviczc

At least I'm not alone!

I've noticed that on some highways it doesn't seem as bad... which almost makes me wonder if something is tracking wrong or.. shoot... I don't know. I'm glad you mentioned that because I didn't really think about it, but you're right. Mine does do it at least a little on all highways.

therealciviczc

[QUOTE=Ubetit,Aug 29 2006, 09:46 AM] Mine has been doing this for 2 years.

K-Lo

wow i'm intrigued by your problem. Honestly i don't have an answer for you. keep us updated!

xviper

I can't seem to see anywhere in your posts what year of car you have. These little details are important and I wish people wouldn't neglect this sort of thing.

The oscillation can be attributed to wheel bearing. That's why I made mention of it and the hub nut torque. I have a reason for posting stuff like this. I don't do it just to entertain you. A bad wheel bearing may or may not produce a noticeable whine. It all depends on how it wore itself in (or out). I also wanted to know the year because only the later models came with the revised rear hubnut torque. Having it too loose may cause abnormal bearing movement and hence, abnormal bearing wear. Upping the torque may reveal some interesting findings and should be done anyway, so you're not wasting any time doing this. If the oscillating vibration goes away or alters significantly, you may have just narrowed down what part you need to address.

One more thing to check .................... Have a good look at the little bolts that secure the propshaft to the rear diff. Are they on tight and are they all there?

therealciviczc

It never fails. You think you cover everything when describing the problem and you miss the obvious...

The car is a 2002 with 19,000 miles. The wheels are stock. The tires are potenzas in the factory size. The only aftermarket part on the car is a header, which doesn't apply here of course.

Thanks for the suggestions. I at least have some hope now. I suppose every problem is fixable. I just need to keep remembering that.

SpitfireS

There is something I can not find in your posts: For how long has the car been doing this?

therealciviczc

I'm not sure. I bought the car about 2 weeks ago and didn't notice until I first took it on a long trip. This is sort of stupid on my part I realize, but the area where I test drove the car had sort of rough highways, so I didn't even give the shaking a second thought. It felt like it was just the rough road. It wasn't until I drove it back to Columbus 3 days later that I first noticed. I figured it was just a tire balance issue, so I didn't worry too much until I got the tires balanced and it kept doing it.

The car was purchased from a used dealer. I'm thinking of calling and bitching, but I don't think I'll get anywhere since its been a full 2 weeks.

Ubetit

In my case all the little bolts on the propshaft/diff have been replaced when I upgraded to the 4.57 and then again with the 4.57r.


I haven't checked my wheel bearings yet but they display none of the traditional noise, grinding or play that wheel bearings typically exhibit when bad. My axles never clicked but were re-torqued last summer. I recently put my car in the air and re-torqued just about everything I could. It still happens. I'll check my wheel bearings and rotate my drive shaft 180 degrees next.

SpitfireS

It could be that IF the previous owner drove around with unbalanced tires for too long they worn out "unbalanced".
Rebalancing would not make it any better.

New ones may be your only solution.
Are there any other S2000 owners around?
(Maybe post a request in a local forum)
They may let you drive on their wheels to try if the shaking stops.
And they may find their car starts to shake on your wheels & tires.
Worth a try (and cheap too)
Yeah.. I'm Dutch

(don't forget to swap tires again afterwards... )