Vacuum Line Question W/ Illustrations

[Slammed0]

So I was searching around my engine for my irratic and irregular idle. I came across this. On the throttle body there is a few what I would call sensors built into it on the backside. One of them has a hose coming from the EGR valve area. Well, it has 3 areas for vacuum lines to plug in to. I was missing one. I can't remember what was ever there. So I just plugged it using some stuff I found around the garage(the blue plug in the pic). Does anybody know what is missing here? And is something where it would go? Thanks! 96 2.0 420a

http://img45.imageshack.us/img45/5544/eclipsemte9wy.jpg
http://img358.imageshack.us/img358/7854/eclipsemte29xc.jpg
http://img358.imageshack.us/img358/4678/eclipsemte35pe.jpg

 

[Slammed0]

Those vacuum ports are on the intake manifold, not the throttle body. The middle port is supposed to be plugged, it is not used for anything. I have the same thing; I suppose it's just something Chrysler engineers included for fun...

!! Sorry, thats what I meant, intake manifold. Thanks though! Thats what I needed to know!

 

[DSMcrazy3]

That port is for cars equipped with cruise control.