I went out and looked and I do see what I believe to be at least one bolt holding what I believe to be the crank sensor. It is all so caked up with oil residue that it is very hard to see and it appears to have 3 wires coming out from it in a sleeve that run over by the oil filter to a plug in. Is that the only crank sensor or does this car possibly have the other one on the back side of the motor too because I climbed under there and I couldn't find it if it is. Before I change the one by the pulley though, what is the best cleaner to use to get all the grime off that wont hurt the wiring so I can inspect it better and have a clean area to mount the new one?