That vehicle has several O2 sensors and they are all threaded into the exhaust system at various points.
On the muffler
The sensor is located in the rear exhaust manifold.
Where is the crank sensor on a 95 chevy lumina car ?
Back side of the engine....mounted in the exhaust manifold.
Where do you find a knock sensor on 1999 Chevy lumina
on the muffler
Most oxygen sensors are either on the exaust headpipe just after the manifold or on the manifold. I don't know where it is exactly on the Lumina but that is where you should start looking.
The oxygen sensor is usually mounted in the exhaust manifold pretty close to where the exhaust pipe bolts on.
on most cars it in the front at the bottom of the by the crank pully
yes
2.2l is behind cat converter
Probably not, but it will certainly cost in fuel, performance and excessive emissions.