Where is the crankshaft sensor on a 1991 dodge ram charger 5.2?

The crankshaft position sensor (CKP sensor) on a 1991 Dodge Ram Charger with the 5.2L V8 engine is located on the passenger side (right side) of the engine block, near the front of the engine, behind the harmonic balancer (the pulley at the front of the crankshaft).

You'll likely need to remove or at least partially loosen the harmonic balancer to get a good look at it and access it for replacement or inspection. Be careful working around this area, as the balancer can be heavy. Always consult a repair manual specific to your vehicle for detailed instructions and safety precautions.