You have two.Sensor one is located in the exhaust manifold.Sensor two is located in the exhaust pipe downstream of the catalytic convert.Check related links below for removal of sensor one.
The speed sensor on a 1999 Saturn SL1 is under the transmission. It is below the fittings for the transmission cooler lines.
How many oxygen sensor on your 1999 3.5 rl?
The oxygen sensor on a Saturn can be found in the exhaust manifold at the front of the engine. It simply unscrews and unplugs. 5 minute fix!
The oxygen sensor that typically fails is attached to the exhaust manifold, just above the headpipe. It looks a little like a sparkplug, and has an electrical connection. The OTHER oxygen sensor is behind the catalytic converter.
The orange engine light means that your Saturn LS300 has a sensor that is signaling for a service. This could be an oxygen sensor, an oil sensor, or even a tire sensor.
behind the catalytic converter
Oxygen sensor number two would be screwed into the exhaust either after or in the side of the catalytic converter.
All oxygen sensors are located in the exhaust either before or after the catalytic converter.
It is in the exhaust after the converter.
on the right side of the engine
The upstream heated oxygen sensor is located ahead of the catalytic converter The downstream heated oxygen sensor is located behind the converter
The oxygen sensor on a 1999 Honda Civic is located on top of the catalytic converter. The catalytic converter is under the car.