Okay-

so, I'm assuming that this is related to a vacuum hose being old or
something in the likes, but I would like a little more input before I go out
and replace everything related to the vacuum system in the Vanagon.

engine idle sometimes shoots up to 2200+ RPMs when sitting at idle after the
engine is completely warmed up. sometimes, like after long road trips, the
idle will remain at the normal 900-1100 rpm spot that I'm so fond of it
staying at.

before I start replacing the whole vacuum system, are there any other things
that I might want to look at while I'm taking the time "under the hood?"

thanks

Myles
'86 weekender