I pressure tested my car and found a vacum line not attached to anything. It ts off of a black-yellow vacum line that comes off the manifold. The t-d off part runs for about 10 inches then was just left hanging back there. Its all factory ive never touched anythign there. The only place I can think it possibly may go it theres a sensor underneath the intake pipe and the throttle body. It kind of looks like it flares out to where a vacum line would connect there but theres no way to attach it. IF anyone can help me out that would be great

 

look under your hood... it might be for the f/p regulator... but there is a diag, under the hood..

 

I looked under the hood briefly at that diagram and didnt see it on there.

 

Actually just found where it goes. There was a sensor practially underneath the side of the manifold