Quote:
Originally Posted by Astrok
It just pulls out. The ridges on plast hold it in rubber gromit
|
Thanks! Hate pulling on (especially plastic) parts that have not aged so gracefully. Finding big chunks of the engine partition in the bay was kind of a big letdown, but that didn't stop me...
I ended up getting a used booster off of ebay based on many other threads/experiences and dissected the inside of my old one - it was in very bad shape compared to the 'new' one.
The one I purchased was from 2011, same part number and fits perfect, however, the brake pedal doesn't want to firm up and there's a different kind of air noise than before.
Here is the story so far:
1. Watching LTFT's started noticing a change ~3.5 ish numbers on the negative side; bank 1 slightly higher (vacuum pump tie - in?). Started trying to find some sort of vacuum leak or unmetered air or something to explain this anomaly. Found nothing, but a tiny oil leak from one of the driver's side sensors - not sure if it's the seal or just not tight enough (yet to resolve)
2. Started hearing a strange whooshing sound (like when you blow up a balloon the old fashion way). Tracked it down to the booster.
3. Went ahead and picked up a used one, just in case - kept trying to research...
4. Changed booster - problem went away, inside of old one looked horrible compared to 'new' one.
5. Bled brakes with air/vacuum - did NOT use any software.
6. Brake pedal won't hold firmness, brakes do work fine, just at the very bottom of the pedal. No fluid leaks that I can find anywhere, none existed before.
7. I pulled the booster back out, smoke tested it - smoke came out the air filter section - the part that extends to the pedal and covered by shield with a dust cover (?), which extends from the diaphragm plate. Hope that explains it. <-- Not sure if this is normal or not since this is where the booster gets atmospheric pressure.
8. Next steps, use ISTA to activate ABS when bleeding...?
Not sure what may be the actual issue here, looking for thoughts/advice/experience. Also, the booster I bought does have a 6 month warranty, so no worries there if it's actually bad.