Where is the oxygen sensor on a 1985 Chevrolet El Camino?

On a 1985 Chevrolet El Camino, the oxygen sensor is typically located in the exhaust system, specifically in the exhaust manifold or just downstream of it in the exhaust pipe. It may be mounted before or after the catalytic converter, depending on the engine configuration. To locate it, look for a cylindrical component screwed into the exhaust system, often near the engine.