I have just about wrapped up my vac line issues but I ran into a little problem.

My truck (87 p/u 22r MT FED) has a vacuum part that doesn't appear to be listed in the 85 FSM.



It is mounted on the passenger wheel well, right next to the VSV and the vacuum switch. One of the lines goes to a tee and I can't figure out what is supposed to plug into that tee.


If anyone can identify what that mystery part is and more importantly what is supposed to plug into it I would appreciate it.

Here is the section out of the 85 FSM so you don't need to dig it out

Thanks for the help



-frozen