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Re: Um..... Posted by Saana88 [Email] ![]() ![]() ![]() In Reply to: 88 900s bad master cylinder, derek900, Mon, 10 Dec 2007 22:15:03 Members do not see ads below this line. - Help Keep This Site Online - Signup |
It's only got one piston.
I think you have multiple problems here.
First and foremost, you have a brake fluid leak somewhere. Find it and refill and bleed the brake system. Since it sounds like you've had a lot of air introduced in the system, you just might want to bleed the whole system.
After that's done, if you hold the pedal (sic) down and it still sinks slowly but can be pumped back up with no fluid loss, then the master cylinder is toast, as described next.
If you pushed the brake pedal (sic) down to the floor and it hasn't been there recently, it is possible you could have chewed up the master cylinder seals. Even if you get a new emcee yourself, it should be about $50 for a decent aftermarket one. Two bolts, two line fittings, and the clutch supply line and you can swap it out in your sleep. Bleed it again.
If your brakes have been dragging on for thousands of miles, then it's time to rebuild or replace your front caliper(s), whichever ones are sticking. If you touch the brake rotors after driving for half an hour or so and any of them are so hot you burn your fingers, the piston or sliding surfaces are hanging up or (in the rear) the parking brake cables are stuck. If the sliding surfaces are dry, clean them up and lubricate them. If the parking brake cables don't move, replace them. If the pistons can't be pressed back into the calipers with the right tools, then it's time to look at calipers. You (or any shop) can get decent-quality rebuilt calipers for around $50 each.
Figure out what's wrong with the car and fix it if you have the knowledge, skills, and abilities. And if I ever catch you driving around one of my Saabs with only the rear brakes working, I'm calling the cops.
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