Came out from work, started it up, noticed it was idling kind of funny. Didn't think much of it, often does that when it is cold. stopped at a red light and it started lurching and shuttering like it was having an epileptic siezure. Put it in nuetral, give it some gas and it revs up just fine, nice and smooth, light turns green, off i go, no prob. I pull into a gas station and go to check the oil. Notice there is an open hole (in my block) where there previously was not, and a piece of hose that just stops directly over top of it. I am assuming this is where some kind of sensor goes, but how can it just be gone? (insert a paragraph of expletives here)