Oxygen sensors are located in the exhaust manifolds & in the exhaust pipes on most vehicles
In exhaust pipe before catalytic converter unscrew to replace
where are the oxygen sensors on a 2000 Pontiac grand am and how do you change them?
In a 2004 Pontiac Sunfire, there are two oxygen sensors. One would be located in the exhaust before the catalytic converter. The other is located in the exhaust after the catalytic converter.
The oxygen sensor is located in the exhaust manifold near the firewall. It is easier to get to the sensor from under the vehicle.
There are two oxygen sensors, there is one located in the exhaust system before the catalytic converter and one after the catalytic converter.
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The oxygen sensors are located in the exhaust pipes.
Under the steering wheel
I am not sure exactly where the oxygen sensor(s) would be located, but the location that is generally chosen is upstream of the catalytic converter and close enough to the firewall for shorter wires to be routed from the wiring harness.
oxygen sensors are located just forward of your engine. In front of the engine is the catalytic converter. At the top at the bottom are your oxygen sensors.