I was looking in my engine the other day and much to my surprise I have a random part that is as big as a half dollar and maybe 1/4 to 1/2 inch thick. I has what looks like vacuum line connections on either side of it. Part # 171919825. Anyone have a clue as to where it might go? Car runs fine, cruise control works fine, and it has not been hooked up since I have owned the car. Rob-