On a 1991 Dodge Ram pickup with a 318 engine, the crankshaft position sensor (CKP sensor) is located on the
passenger side (right side) of the engine block, near the front of the engine, usually mounted on the bellhousing. It's often fairly close to where the transmission bolts to the engine.
However, it's *crucial* to consult a repair manual specific to your 1991 Dodge Ram 318. The exact location can vary slightly depending on specific engine configuration and modifications. A repair manual will have diagrams and photos showing the precise location and making identification easy.
