Originally Posted by griddellcakes

For education's sake (there doesn't seem to be much coverage on this part of the vacuum system), I will post my findings.

The vacuum reservoir would not hold any vacuum, so I removed the fender liner and sure enough, the grommet at the top of the res was completely disintegrated. With the line plugged at the "Y", the car still seems to retain full functionality and shuts off immediately..which makes me wonder what the purpose of the reservoir is?

Regardless, a couple of pictures for the "visual", and I will be on the hunt for a new grommet.

Thanks again for the help!

(for some reason photos aren't working at the moment...)