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Old 02-12-2006, 08:42 PM   #1
GSX4
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Join Date: Jul 2005
Location: Woodbury, Minnesota
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93 Lumina 3.1 with ABS. Brake problem

While filling up at the gas station the other day, I noticed something wet trickling down the drivers side rear wheel rim. Thinking it was water at first I ignored it. Then I had a bad feeling, but decided to check it.... and it was Brake fluid. I limped the car home and checked tha master cylinder and it was low. So luckily for me and anyone else on the road no accident happened. It could have been much worse. Anyway, took the rim off and the caliper was leaking. Incidentally, this was replaced last summer when I did full brake job and replaced ALL four rotors caliopers etc. Anyway, I put the new one in today, and had to bleed the system as per the Haynes manual, and cannot get a hard brake pedal anymore. Incidentally, my wife drove the car a few times before and said the pedal was acting funny, but seemed alright.
I am using a MOTIVE power bleeder and following all directions to bleed the ABS system correctly. THere is no air in the system, and I am certain of that.

That said, I am now suspecting the master cylinder is shot. Unfortunately, the maser cylinder in this model has the ABS controller attached. I have not even begun to check into what they run for as I am not really thrilled about having to spend a ton of dough for it. Does anyone know what this would typically run for? Is it something I should let a shop do due to the ABS system? Personally, I have the skills to do this, but not to seperate the ABS unit and master cylinder. I have to believe there are rebuilt units out there, but need some advise on whether this is the correct course to take? Any ideas would be appreciated.
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