reason i ask is because on the top of my intake manifold there are 2 vacume hoses right next to the throttle body, but there is a third hole that has nothing going to it. i have searched but cant find a good pic of the spot im trying to explain. here is a pic of my head when it was off my car. i have circled the spot im explaining.

my question is, is there supposed to be something coming out of this hole?

 

funny, i was just looking at my car yesterday and saw the same thing. there's only two vacuum lines in that area. don't know what the third one was or is for but yea only two.

 

here is my mspaint skills

 

thats normal but if you want i can send you a service manual with that part only and you can see how everything is routed, just pm me your e mail address

 

yea i figured it was normal, but im just making sure. this is all steming from my damn P0171 code. im jsut making sure all vacume hoses are acounted for before i go buying a damn $254 o2 sensor. damn u mitsubishi.