Where does this go - vacuum valve

[78F350]

Bill, take a look at these two posts and see if you can sort it out:

Originally Posted by 78F350

In regard to the vacuum connections, here's that diagram, created with actual parts from a scrapped 2001 2.7L.

Notes:
-This picture shows what connections have to be made, the actual order of connections to the Y fittings (I) and (G) are not critical.
-The Tiptronic cars will have a 4-way connection at (I) or (G) with a line running to a changeover valve on the transmission.

It looks like a mess of tubes and parts, but in function it is fairly simple.
This shows 3 vacuum powered components: SAI, Resonance Flapper, and Fuel Pressure Regulator. Brake booster vacuum system is not shown.
SAI: Vacuum source -> electric change-over valve (E) -> change-over valve (D).
Resonance Flapper: Vacuum source -> electric change-over valve (J) -> vacuum unit (K).
Fuel Pressure Regulator: Vacuum source (B) -> Pressure regulator (C) -> injector valves (A).

Rubber sleeves (L) and (B) are the source of vacuum from the intake. (H) is a check valve. (F) is the vacuum reservoir.

Note that (L) in the above diagram is placed on the junction to the right of the throttle body.

Originally Posted by jsceash

On a 2003, Driver side intake manifold has a vacuum switch between cylinder 4 and 5 intake risers. A line comes off the bottom of that switch and goes to the Y connector near the vacuum tank the other end goes to a connection on the underside of the passenger side plenum collar. The same switch has a second tube that goes to the diaphragm you pictured. I have an engine apart now and can probably get you a couple pictures

Hope that solves it for you.