Brake Groan

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Old 26 Oct 2003, 11:22 pm   #1 (permalink)
Allan
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Default Brake Groan

Could someone please bring me up to date on the 99 Camry "brake groan"
problem. In the past, I've seen complaints posted to the group re a
groaning or grinding problem when applying the brakes, but happily ignored
them thinking it was something to do with the anti-lock brakes (which I
don't have) or some problem I lucked out on and didn't have.

My brakes have been and still are very smooth under light application, but
lately I have been doing more highway driving and notice applying the
brakes at highway speed, or on long steep downgrades where moderate pedal
force is required, causes a groaning noise that increases with increased
pedal force. Thinking back, this did happen a few times when the car was
almost new and I put it down to road surface noise, which I now realize it
was not.

Was any cause and solution offered by Toyota?

Thnx for any info

Allan
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Old 27 Oct 2003, 07:23 am   #2 (permalink)
Daniel M. Dreifus
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Default Re: Brake Groan

crazy@axion.net (Allan) wrote in message news:<crazy-2610032122060001@204.244.233.112>...
> Could someone please bring me up to date on the 99 Camry "brake groan"
> problem.

Could be brake pads "glazing" - hard shiny surface covering the
friction material.
Sometimes applying the brakes firmly from a higher speed a couple of
times can remove this glaze.
Light use of brakes, especially over a longer braking distance can
cause this condition develop.
Make sure you're using Toyota brake pads. They have put much effort
into designing the composition for the most effective normal use.
If the rotors are glazed the surface may need to be "roughened up"
slightly.
Also check that the anti squeal shims and anti squeal compound were
applied between them and the back of the brake pads.
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Old 17 Nov 2003, 10:22 pm   #3 (permalink)
spamlapper
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Default Re: Brake Groan

brake noise came from the front brake pads. they're made of very hard,
rock like material. In 1999 or thereabouts toyota came out with
"black" pads to lessen the noise but the tradeoff is that they don't
last as long. In my case there was a tremendous groaning sound when i
got the dealers bill for a "checkup". good luck.











ospampls2002@yahoo.com (Daniel M. Dreifus) wrote in message news:<c5ef7dc0.0310270523.36000365@posting.google. com>...
> crazy@axion.net (Allan) wrote in message news:<crazy-2610032122060001@204.244.233.112>...
> > Could someone please bring me up to date on the 99 Camry "brake groan"
> > problem.

> Could be brake pads "glazing" - hard shiny surface covering the
> friction material.
> Sometimes applying the brakes firmly from a higher speed a couple of
> times can remove this glaze.
> Light use of brakes, especially over a longer braking distance can
> cause this condition develop.
> Make sure you're using Toyota brake pads. They have put much effort
> into designing the composition for the most effective normal use.
> If the rotors are glazed the surface may need to be "roughened up"
> slightly.
> Also check that the anti squeal shims and anti squeal compound were
> applied between them and the back of the brake pads.

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