So I've been playing with this 1997 Audi A4 Quattro 2.8L. Getting absolutely no spark and can't get it started at all. I replaced the ICM and nothing. I was having difficulties finding where crankshaft position sensor was located. Well I finally found where it's located,I think, I am confused now because about maybe a foot or less behind it I see a slot where it looks like a crank sensor would go into with a single bolt hole. But can't seem to find a where the pigtail would plug in if something does go there. Can someone help me??