No warning brake failure on 92

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Old 31 Jul 2003, 03:03 pm   #1 (permalink)
Marc
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Default No warning brake failure on 92

The right front bake line burst at the wheel on my mother's 92. I found out
from the dealer today that the brake warning light will only indicate a
problem with the booster? if the level is low in itself and not the
reservoir or something to that effect. Of course it also indicates that the
emergency brake is on. This is a frightening thought. I had thought that
there were two separate systems and if one went out, braking with two wheels
would still be available.

In addition the emergency brake did seem to pull up fine when parked, but
the mechanic told me today that the drums weren't in contact and he couldn't
stop the car until he threw it into neutral.

This problem started somewhat suddenly at a light the day before total
failure. I found that the pedal was sinking too low. Things did not seem to
get worse until the next day when they suddenly got so bad the car hardly
slowed down at all. After filling the almost empty reservoir it poured out
under the wheel well.

I was told today that this problem happened because my mother doesn't put
enough mileage on the car and water gets into the fluid and causes
corrosion. I don't remember if he specified highway trips or stop and go but
I'm thinking that stop and go would help more. I have a 93 and don't put too
much mileage on it right now because I work very close to my home. I wonder
if I'm likely to have a problem too. I also wonder if she should have the
fluid changed once a year or so. I think she puts on 3 to 4 thousand miles a
year.

Any comments on the above?

Thanks,

Marc

I


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Old 31 Jul 2003, 05:26 pm   #2 (permalink)
Philip®
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Default Re: No warning brake failure on 92

Marc wrote:
> The right front bake line burst at the wheel on my mother's 92. I
> found out from the dealer today that the brake warning light will
> only indicate a problem with the booster? if the level is low in
> itself and not the reservoir or something to that effect. Of course
> it also indicates that the emergency brake is on. This is a
> frightening thought. I had thought that there were two separate
> systems and if one went out, braking with two wheels would still be
> available.


While it is not written in the long term scheduled maintenance to replace
hydraulic brake hoses, it is pretty well known in the industry that 5 yrs
is the maximum those flexible hoses should be allowed to stay in service.

The Brake light can be triggered by (a) the parking brake being applied
(b) the brake fluid level being low (c) anything there is a pressure
difference during brake application between the front and rear hydraulic
systems (d) in some cases, a sensor wire in one of each pair of brake
pads making contact (ground) with the rotor (worn out pads).

> In addition the emergency brake did seem to pull up fine when parked,
> but the mechanic told me today that the drums weren't in contact and
> he couldn't stop the car until he threw it into neutral.


> This problem started somewhat suddenly at a light the day before total
> failure. I found that the pedal was sinking too low. Things did not
> seem to get worse until the next day when they suddenly got so bad
> the car hardly slowed down at all. After filling the almost empty
> reservoir it poured out under the wheel well.


And was it after this discovery that you continued to drive the car? I
sure hope not!

>
> I was told today that this problem happened because my mother doesn't
> put enough mileage on the car and water gets into the fluid and causes
> corrosion.


Time passage and weather kills off these hoses. Rubber does not corrode.

> I don't remember if he specified highway trips or stop and
> go but I'm thinking that stop and go would help more. I have a 93 and
> don't put too much mileage on it right now because I work very close
> to my home. I wonder if I'm likely to have a problem too. I also
> wonder if she should have the fluid changed once a year or so. I
> think she puts on 3 to 4 thousand miles a year.
>
> Any comments on the above?
>
> Thanks,
>
> Marc


The rule of thumbe seems to be fluid flush at all four wheels every 24
months ... unless you operate in an area known for prolonged high
humidity. Then, change every 18 months or less.
--

~~Philip

cantankerous | kan-TANG-kruss | adjective: difficult or irritating to
deal with.

Example: Philip was always cantankerous in the morning, given to snapping
and snarling until he'd had his first cup of coffee and a soothing hot
shower.


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Old 31 Jul 2003, 09:25 pm   #3 (permalink)
MDT Tech®
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Default Re: No warning brake failure on 92

Marc wrote:
> The right front bake line burst at the wheel on my mother's 92. I found out
> from the dealer today that the brake warning light will only indicate a
> problem with the booster? if the level is low in itself and not the
> reservoir or something to that effect. Of course it also indicates that the
> emergency brake is on. This is a frightening thought. I had thought that
> there were two separate systems and if one went out, braking with two wheels
> would still be available.
>


Ah, there is 2 systems, your park and regular brakes.


> In addition the emergency brake did seem to pull up fine when parked, but
> the mechanic told me today that the drums weren't in contact and he couldn't
> stop the car until he threw it into neutral.



Ah, so you never used the park brake (common on automatic cars) and this
is what sets up the park brake.

>
> This problem started somewhat suddenly at a light the day before total
> failure. I found that the pedal was sinking too low. Things did not seem to
> get worse until the next day when they suddenly got so bad the car hardly
> slowed down at all. After filling the almost empty reservoir it poured out
> under the wheel well.


Well, the system is seperated into 2 systems, front and rear on this
model, the pedal will go lower if one fails, you will still have the
other system, though, reduced.

>
> I was told today that this problem happened because my mother doesn't put
> enough mileage on the car and water gets into the fluid and causes
> corrosion. I don't remember if he specified highway trips or stop and go but
> I'm thinking that stop and go would help more. I have a 93 and don't put too
> much mileage on it right now because I work very close to my home. I wonder
> if I'm likely to have a problem too. I also wonder if she should have the
> fluid changed once a year or so. I think she puts on 3 to 4 thousand miles a
> year.


Mileage has nothing to do with water in the fluid, brake fluid is
hydroscopic by design and it can only hold soo much moinsture, moms was
saturated. A brake fluid flush would of prevented this.


--





Hey, do you smell that? Smells like something died?
Is it dogshit on the bottom of your feet?
Nope, its just Uday and Qusay!
I slept better last night knowing they have assumed
room temperature!
Looking forward to seeing these rotting corpse of these thugs
on TV!

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