To be certain, you'll need to:
1. Consult a repair manual: A Haynes or Chilton repair manual specific to your 1992 Oldsmobile Cutlass Supreme will have diagrams showing the exact location. This is the most reliable method.
2. Use an online parts diagram: Many auto parts websites (like AutoZone, Advance Auto Parts, etc.) allow you to enter your vehicle's information and view diagrams of its components. Find the engine diagram and look for the crankshaft position sensor.
3. Visually inspect the engine: Once you've gotten a general idea from a manual or diagram, carefully examine the engine bay, looking for a sensor near the crankshaft pulley on the passenger side. It's usually a small sensor with a single or two-wire connector. Be cautious when inspecting, as the engine bay is hot when the engine is running.
Remember to never work on a car with the engine running. Always disconnect the negative battery terminal before starting any repairs.