Re: HELP: 93 Toyota Corolla vibration problem!

On 4/21/08 9:32 PM, in article
iaednQy4Q-kD0pDVnZ2dnUVZ_umdnZ2d@[EMAIL PROTECTED]
"Ray O" <rokigawaATtristarassociatesDOTcom> wrote:

> 
> <jonb55198@[EMAIL PROTECTED]
> wrote in message
> news:1e46810a-a0b3-4eb7-b098-31265f803d00@[EMAIL PROTECTED]
>>> Replace both front brake hoses, replace the brake fluid, and bleed the
>>> brakes.
>> 
>> Ray, I had them do this.  The problem still persists.  Could it be a
>> brake booster problem?
> 
> I read through most of the posts before responding.
> 
> It is very unlikely that a master cylinder is causing the problem, and
it is
> unlikely that a misadjusted push rod is causing the problem unless
someone
> messed with the master cylinder or pushrod.
> 
> It is possible, but not likely that a bad wheel bearing is causing the
> problem.  Wheel bearings generally make a lot of noise before getting
bad
> enough to actually cause a problem.
> 
> A wheel or tire that is out of round either laterally or radially will
cause
> a vibration, but not likely that the vibration will come and go and it
will
> not make the wheel hot to the touch or bind the brakes so that is not
high
> on my list.
> 
> A bad CV joint will make noise, cause pulling, or fling grease all over
the
> undercarriage before it causes an intermittent vibration and will not
make
> the wheel hot to the touch or bind the brakes.
> 
> If replacing the calipers did not change the problem, I would have
guessed a
> bad brake hose.
> 
> I read that you are replacing the front calipers, make sure that the
slides
> are free and coated with disc brake grease or anti-seize.
> 
> Where are you located?

I will add one additional possibility that I personally experienced on an
Acura TL.  A bad upper ball joint caused ALL the symptoms re****ted here on
that car - hot wheel, apparent warping of the rotor, chattering brakes,
all
of it.