Where is the o2 sensor located in a 1983 Oldsmobile delta 88?

In a 1983 Oldsmobile Delta 88, the oxygen sensor is typically located on the exhaust manifold or just downstream of it in the exhaust pipe. It may be found near the catalytic converter if the vehicle is equipped with one. If you're having trouble locating it, consulting the service manual for your specific model can provide additional guidance.