]So i was working on my 96 DOHC taurus lx and i had to take off some vacuum hoses to get to the coolant tempature sensor. The hard plastic green and red lines broke because they were so old and brittle. I've repaired them as best as i could but theres another vacuum hose that i can't figure out where it goes. its covered in black rubber, and at the end of it the green line protrudes about an inch and theres a rubber boot at the end of it.My engines idle is even worse than it was before please if anyone could give me an answer quickly i would greatly appreciate it! i'll upload a picture of the line in question.