Where is the oxygon sensor on a 1989 olds 88?

On a 1989 Oldsmobile 88, the oxygen sensor is typically located in the exhaust system, specifically on the exhaust manifold or the exhaust pipe just downstream from the manifold. It is often found near the front of the vehicle, close to the engine. If you're having trouble locating it, consult the vehicle's service manual for specific details related to your model.