01 expedition intake manifold question

[evelknebel]

I bought the replacement dorman intake manifold and it doesn't have the vacuum port on the back of the plenum like the original manifold on the motor. Did they send me the wrong manifold? Is that vacuum line necessary or can I do without it. Any help or a link to a thread that explains this would be greatly appreciated. I have the 5.4L.

 

[FordandPolaris]

If I am thinking of the right port, it is the one for the PCV valve. If that is missing, you will have a rough idle and a check engine light. Can't say for sure if they sent you the wrong one, but it might be worth a call to the manufacturer of the intake.