? Constant wobble sound, shake at high speed

Hi there,

I have a 99 Windstar that up til now I haven't had many problems with.

About a week ago, I began to hear a wobble type sound. It sounded like it was coming from the front passenger side.
Figured it was the tires, as they were old anyway... Replaced them. A belt in my passenger rear tire had gone.. figured it solved it.
Problem remains.

The main issue is at lower speeds (50-70km/hr) I can hear the wobble more than feel it. Slight pull to the right, but not substantial. (Tires were balanced when installed) At highway speeds the wobble is much louder, and I can feel a shaking across the front & in the steering wheel.

It was suggested it may be a bearing... If so how do I know for sure, and how do I fix that without spending a bundle on it.

Thanks for any advice you can offer!

How many total miles on car? Were all four tires replaced?

It's got 77,000 miles on it..
All four tires were replaced.
Thanks

It may be bearings, .... but my first guess would be brake rotors.

Really? Wouldn't I feel that more in the brakes then? I do feel a slight vibration in the brake when slowing down from high speeds.. but not a lot.

If thats the case, thats an easy fix...
Thanks

Really? Wouldn't I feel that more in the brakes then? I do feel a slight vibration in the brake when slowing down from high speeds.. but not a lot.

If thats the case, thats an easy fix...
Thanks

I agree with 12ounce. I had warped rotors on my 1996 Windstar and the hotter they got the more the front end would wobble. After awhile it would wobble whether I was using the brakes or not. Changing the rotors fixed the problem for me. I also was told when my brakes were being replaced that I need outer tie rod ends but I haven't replaced them yet because the wobble hasn't returned.

Warped rotors usually show up when you apply the brakes, another possibility would be a caliper sticking and slightly warped rotors this could cause it to pull to one side also

Warped rotors usually show up when you apply the brakes, another possibility would be a caliper sticking and slightly warped rotors this could cause it to pull to one side also

What could/would cause brand new calipers to stick?

(There does not appear to be any obvious damage to the various suspension parts - boots all look fine, nothing bent, etc.) There is maybe 1/8" "play" at the tie rod end, when the tire is rocked left/right. I am stumped!

[QUOTE=Karmana]What could/would cause brand new calipers to stick?

I've been wondering the same thing. Two thoughts:
-I have never changed a master cylinder but could one possibly fail or wear internally so that it does not allow proper return fluid after brake application?

-Have you thoroughly flushed your brake fluid, or had it done? I am wondering what high heat may have done to the fluid. Many of us have done a self flush using a mitivac hand vacuum pump. I have pumped some really ugly fluid out of my brake system, especially from the rear cylinders. If your fluid, is almost all old you might think about that. I realize to change the calipers you had to bleed them which should have flushed at least the front lines.

Best regards.