Steering wobble

[Steveb]

Hello all,

Got a problem with my Sierra.

Started about 2 weeks ago-steering wobble at certain speed just as if the wheels were not balanced. Had a look-no weights loose-jacked it up - no play anywhere. Ok for a while then it came back. Swapped wheels front to back-ok again for a while-checked all steering suspension components again and no play evident. Again ok for a while but now back this morning. It's exactly the type of wobble through the steering wheel you get with an unbalanced wheel.

Car was mot'd in December where they changed a track rod end.



Any advice greatly appreciated.

[DodgeRover]

I remember our Sierra estate needed the wheels balanced on the vehicle to not be vibrating.
I would check that TRE first though - did they check the tracking at the same time?

[AutoshiteBoy]

I had a late Cosworth that needed the wheels balancing on the car.

[Nibblet]

Did Sierra rammel have a box or rack?

[NorfolkNWeigh]

Did Sierra rammel have a box or rack?

A rack, seem to remember they were about £30 and took half an hour to change. Those were the days…

[Hooli]

I'm sure I recall bushes in the lower arms, where the anti roll bar fits as wearing fast on Sierras. Once that's worn the arm can bounce back n forth giving interesting results.

[red5]

Check the track control arm inner bushes. Check the outer one- bear in mind they are compliance types and move a lot.

I'd also check the front dampers- basic bounce test

[Steveb]

Many thanks, changed the lower arm bushes and arms last year but will check for wear. Only thing changed within the last month was the track rod end-will put another one on.

Steve

[Hooli]

I'm sure I recall bushes in the lower arms, where the anti roll bar fits as wearing fast on Sierras. Once that's worn the arm can bounce back n forth giving interesting results.

I've just remembered when I had my Sierras that these bushes where star shaped so didn't last. You could buy a HD version that was round so lasted. My first Sierra needed them replaced at 35k when I bought it. It was only five years old at the time.

[Hooli]

Many thanks, changed the lower arm bushes and arms last year but will check for wear. Only thing changed was the track rod end-will put another one on.

Steve

In that case check the brakes. The terrible steering wobble on my XJR was seized front callipers.