rotor warpage(?), '88 5kcstq

Richard J. Andrews tech at
Sun Feb 20 08:03:38 EST 2000

I would vote for flat spots...
btdt... it sucks...
no real repair... just replace tires or live with em..

At 07:39 PM 1/3/01 -0700, you wrote:
>Hi Kneale and everyone,
>Actually, the vibration doesn't even change much during braking.  I
>don't feel it in the pedal.  It feels too pronounced to be flat spots.
>It's more of a harder type of a shimmy.  I think I know what it might
>Right now, I'm thinking I shifted the motor and messed up the
>motor mount(s).  I will do a more thorough check later, I've parked it
>for the meantime.
>When looking at the oil pan underneath, it seems like the flat
>bottom of it is not parallel with the ground.  I think it's lower on the
>passenger side.  I'm aware of the whole inter-relationship of the
>right side mount, heat shield and air hose, and consequences to
>the EM.
>On 3 Jan 2001, at 18:33, Kneale Brownson wrote:
> >
> > warped rotors would only cause a vibration while braking.  Do you get a
> > vibration all the time?  Could be the flat-spot you mentioned
> >
> > At 12:35 PM 01/03/2001 -0700, Ken Keith wrote:
> >
> > >While visiting friends, I put the car "through its paces".  This
> > >included slamming on the brakes from about 60 or 80 mph to test
> > >them out.  I ended up locking it up and sliding.  It took me a while
> > >to let off the brakes, because it caught me by surprise that it
> > >locked up.  It slid in a straight line for a while.  After that, I had a
> > >new problem.  The car now has a vibration, a bit of a shake of
> > >sorts.  It's either flat spots on the tires, or warped rotors, I think.  I
> > >suppose it could be a wheel bearing going out, but I'm not sure how
> > >to relate that to my brake check.

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