[DML] Re: Steering column vibration when braking
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[DML] Re: Steering column vibration when braking

An update to this problem:

Replacing the steering column bushing dampened, but did not eliminate the steering column vibration during braking.

While replacing the bushing, I observed that the steering column U-joints are in great shape, with no slop or play. The steering rack on the other hand, has too much play.

I suspect the problem is a combination of needing to re-bleed the brakes so that the calipers grab each rotor equally, and replace the steering rack. I think that there may be unequal pressure in the lines.

I have a spare rack that I bought years ago as an intended replacement. I need to unwrap it and re-inspect it. If it's tight and in good condition, I'll install it. If not, I'll buy a new one. Then we'll see what's what.

Rich A.

--- In dmcnews@xxxxxxxxxxxxxxx, "Richard" <racuti1@...> wrote:
> Sorry for the delay in responding.
> My bad for omitting that I have indeed, replaced the swaybar bushings. 
> Someone mentioned replacing the rotors. I did that.
> All replaced parts are NOS, provided by DMCH.
> I do NOT feel the pulsing in the brake pedal. It's only in the steering.
> I already have the Delrin steering column bushing, I just need to install it. I will also check for slop in the lower U-joint, and check the rotor-to-hub interface.
> Thanks for the suggestions.
> --- In dmcnews@xxxxxxxxxxxxxxx, "daveswingle2" <swingle_dmc@> wrote:
> >
> > The obvious omission to me is the bushings at the end of the sway bar. But I'll bet replacing the steering bushing will do wonders. Also check the u-joints in the lower steering column for slop. I've seen that in some surprisingly low-mile cars. 
> > 
> > It's also possible that new rotors are not cut straight. Stranger things have happened. 
> > 
> > Dave S
> > 
> > --- In dmcnews@xxxxxxxxxxxxxxx, "Richard" <racuti1@> wrote:
> > >
> > > I'm still getting a rythmic pulsation in the steering wheel/column when braking, especially when only braking moderately. It gets a little better when braking hard.
> > > 
> > > Please read the following carefully, so as not to recommend an action that I've already taken. I HAVE:
> > > 
> > > Brake calipers completely replaced
> > > Brake discs replaced
> > > Rubber brake lines replaced
> > > Brake master cylinder replaced
> > > Upper AND lower control arm bushings replaced
> > > Lower control arms boxed in
> > > Tie rod ends replaced about 5-6 years ago, but not a whole lot of miles on them.
> > > 
> > > I have NOT YET:
> > > 
> > > Replaced the steering column bushing (and it is gone)
> > > Replaced the steering rack
> > > 
> > > I'm at the point where I'm thinking this is a combination of the worn away column bushing and slop in the steering rack.
> > > 
> > > What say you?
> > >
> >


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