1979-1993 & 94 Conv [Subscribe to Daily Digest] |
OK. It sounds like you maybe did need a new accumulator.
Let me clarify -- when I was talking about the brake fluid level going down, its not actually "loss" -- its what its supposed to do. In VERY layman's terms, here's what I mean:
When the car is cold, the system depressurizes and the fluid level in the reservoir increases.
This is based on the fact that the accumulator is a metal sphere with a rubber diaphram inside of it.... behind that diaphram (sp?) is nitrogen gas. Which is compressible. (PS -- When an accumulator goes bad, that nitrogen gas leaks out/ the diaphram ruptures...and since it won't compress, you get that "hard pedal". And the ABS and brake fluid lights.)
So... when you start the car on a cold/depressurized system, the pump is triggered to come on by a pressure switch which senses low pressure... pump runs... ABS/Brake lights are on for a bit... then as system pressurizes the lights go out and the accumulator is filled with brake fluid.
This fluid travels from the reservoir, through the pump, through the valves/etc and into the accumulator where that compressed gas wants to expand... and thus, thats where the brake boost comes from. When you look at the fluid reservoir, when a perfectly operating system is started up, the level will drop (you can see it happen) -- this is normal and what is supposed to happen. That's what I was saying you should look for.
Send me an email / note and I'll forward you the way to read the fault codes, its saved as a jpeg on my computer and is a Saab service bulletin from 1990. it sounds like you may have another problem in your system...
posted by 67.32.22...
, Tue, 6 Jan 2009 18:40:11
No Site Registration is Required to Post - Site Membership is optional (Member Features List), but helps to keep the site online
for all Saabers. If the site helps you, please consider helping the site by becoming a member.
 |
 |
 |
 |
 |
