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1987-1991 Parley with regards to your 1987 to 1991 Bonneville, Olds 88 or Buick Le Sabre Please use General Chat for non-mechanical issues, and Performance and Brainstorming for improvements.

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Old 02-22-2007, 05:00 PM   #11
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Quote:
Originally Posted by DarkShadow
Quote:
Originally Posted by Merlin 91/97
With everything working right the brakes on my 91 feel as good as the brakes on my 97.
They can't be compared to a brand new car... but they definitely aren't "spongy" (when properly maintained).
there is a big difference beteween your car and simon'*, you dont have the teves abs system being a 91, you have the delco abs which uses a completeley different setup
I agree.. I have driven several of the 89-90 Bonnevilles with the Bosch system... The brakes are good and function just as they should.. The feedback is a little numb at times... Stoped at a light its easy to run the brake pedal down too.... lol...

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Old 02-22-2007, 05:06 PM   #12
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Quote:
Originally Posted by DarkShadow
Quote:
Originally Posted by Merlin 91/97
With everything working right the brakes on my 91 feel as good as the brakes on my 97.
They can't be compared to a brand new car... but they definitely aren't "spongy" (when properly maintained).
there is a big difference beteween your car and simon'*, you dont have the teves abs system being a 91, you have the delco abs which uses a completeley different setup
I did not know that...... it'* something new every day.
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Old 02-23-2007, 12:22 AM   #13
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Default Re: Spongy brakes

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Originally Posted by Saturn Simon
Hi guys, I have a 1988 SSE.

The brakes on it feel very spongy and not very reassuring. The front pads and discs AND the rear drums and shoes have all been recently replaced and bedded in. The brakes have also been bled and the brake fluid changed twice - once by myself and a friend, then again by a professional garage as we weren't convinced our attempt had worked.

Any ideas why the brakes are still so spongy?

Thanks!
I own a SSE1988 since 1990 and the 'spongy" feeling exist since day one with the "TEVES" system.
The only thing I found to improve this condition was to adjust the pedal height
by running in reverse (in a safe condition) then slamming the brake pedal to re-adjust the rear brake mechanisim.
The pedal even being spongy never failed me.
I still have the original master cylinder with now ~220K KM'* (~130k miles) since new.
I had also some concerns regarding this spongy feeling condition and after having verified in several occasions it was deemed OK.
Now I don't even think about it, it brakes that all it count for me now but it has nothing to compare with my 2005 Impala SS that brakes on a dime.
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Old 02-23-2007, 12:41 AM   #14
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Where'* a link to learn more aobut the TEVES sytem? I'm just not seeing how any properly functioning ABS system causes spongey-ness.
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Old 02-23-2007, 12:50 PM   #15
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A properly functioning Teves ABS does Not produce spongyness. I wish you guys could try my car out.
Are you sure your abs computer isn't malfunctioning?
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Old 02-23-2007, 01:13 PM   #16
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I wish I could try all your cars out! I don't have much of a point of referrence... Not many Teves-equipped cars around here.
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Old 02-23-2007, 03:11 PM   #17
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there is alot of information on the teves system at reatta.net for everyone that wants to read up on it.
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Old 02-23-2007, 04:30 PM   #18
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I like the TEVES system, Works pretty cool.

Flushed fluid recently?
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Old 02-24-2007, 03:27 AM   #19
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Quote:
Originally Posted by Damemorder
Flushed fluid recently?
Quote:
Originally Posted by Saturn Simon
The brakes have also been bled and the brake fluid changed twice - once by myself and a friend, then again by a professional garage as we weren't convinced our attempt had worked.


i wonder if there was a glich in the teves system that causes sponginess that some get and others dont, maybe like something that should've been a recall...

has anyone that has a firm pedal ever installed anything new on the brake system other than normal maintenance items? i.e. pads rotors etc.
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Old 02-25-2007, 07:46 PM   #20
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I have two TEVES cars.. guess i'm lucky eh? Both of which have very spongy pedals. One has questionable rear brakes, the other has great brakes all around. Fluid bled in one, flushed in the other, all using the ign on for rear, ign off for front. The bonnie has 4good brakes, flushed, and rear brakes adjusted for a very high pedal. But, I still have a spongy pedal. That car will stop on a dime, but the pedal doesn't feel that way. Cadillac has bad rear brakes, adjusted okay... not best. All 4 wheels bled, and still spongy pedal. I'm sure new, the teves system had a nice high pedal, and i'm sure a few are still good today; but at the same time, I think some cars with age just don't have that good pedal anymore.

IMO, if your car stops as good as you need it to, you should just leave it alone.
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