Where is oxygen sensor on 1993 Oldsmobile 88 royale?

The oxygen sensor on a 1993 Oldsmobile 88 Royale is typically located in the exhaust system, either in the exhaust manifold or just downstream in the exhaust pipe. For this model, you may find it near the engine, close to where the exhaust exits the manifold. It is usually a cylindrical component screwed into the exhaust system, with a wiring harness connected to it. If you're having trouble locating it, consulting a repair manual specific to the vehicle can provide additional guidance.