Help me identify this disconnected vacuum tube

[mjharris89]

Hello fellow Ford enthusiasts. I'm a frequent visitor making a first time post to see if anyone can help me identify this line that I found disconnected between the engine and the firewall. (Images attached, circled in red.) It seems to diverge from a second line that I couldn't quite follow all the way back.

This is a '94 Ranger, 4.0L V6. On another note, does anyone know A) what the outlets are that are circled in yellow and B) what the OEM part number is for a proper plug replacement?

 

[BlackBII]

It's hard to tell from these pictures, but it appears the yellow circled vacuum ports have just been looped with a piece of hose? If that's the case then they are essentially just capped off, and not necessary.

There are two hard lines that run behind the intake plenum on that 4.0; one goes to the fuel pressure regulator and the other connects to the check valve which then splits to the vacuum canister, the air cleaner box and the hvac.

The plastic line you are holding is likely one of those two and you can just connect it to an empty port on that vacuum port tree.

 

[mjharris89]

BlackBII - Thanks for your insight. I was thinking it should be connected to the vacuum port assembly, but it's a very thin (and somewhat stiff) line compared to the other hoses that are connected to it. Could it be that the boot just fell off?

 

[BlackBII]

Yes, those plastic lines should have a rubber boot on the end that slides over a vacuum port just like any other vacuum line.