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The sensor is located in the rear exhaust manifold.
Where is the crank sensor on a 95 chevy lumina car ?
On the muffler
where is the oxygen sensor located on a 1997 Chevrolet lumina
were is knock sensor on 3.1 cutlass supreme
Behind the harmonic balancer.
behind the engine
On a 95 Lumina, it is on the back side of the motor, left side when you are looking at it. to the right and lower than the alternator.
The 95 Lumina with a 3.1 engine does not have a temperature sending unit. Instead, the dash temp gauge is controlled by the engine coolant temp sensor. This sensor is located on the driver's side, top of the engine.
The oxygen sensor is screwed into the exhaust, behind the engine.
Remove the oxygen sensor vacuum to. Remove the oxygen sensor screws. Reverse the process to install the new oxygen sensor.
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.