Quote:
Originally Posted by rfuerst911sc
What does fluid relatively changed and ok mean ? If that means recently bled any chance air was introduced ?
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Good question. Brake fluid not recently changed- but overall maintained. I think I did it about 2-3 years ago, but I didn't muck it up (and I am good at that!
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The last change didn't correspond with the issues. The issues are newer.
It's currently full and could stand a refresh, but not horrific in color.
At this point I'm thinking testing voltage to the unit, new MC, potentially talking to xemodex about the ABS unit.
My biggest concern is being able to purge the ABS unit of air if I replace the MC or the ABS unit. I think I remember some horror story here about someone who got air in the ABS unit and couldn't get a good bleed on it. Something about driving down a dirt road to shake out the bubbles or something.
There's good access to both components, so that's not an issue, just the purging. I did notice tonight, a rat has been gnawing at the brake fluid reservoir, so I'm going to inspect wiring tomorrow for damage, although I did not see any the last time I looked (when I replaced the head earlier this summer).
This thread has already helped in that it gives me confidence the MC could be at fault, not a brake booster vacuum issue. I've been working on a strategy for this for a while now. Time to go do something.