It looks like there is a sensor slightly above the knock sensor...located on the passenger side cylinder head between cylinders 4 and 6....what is this sensor and does the wire that connects to it bundle with the knock sensor wire? do the connectors look the same?...its a single black wire with a pin looking connector that slides into a small tube like female end....anyone know...87 LB9

 

electric fan switch, the connector looks the same as the knock sensor and the wire should be dark green or black