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.
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.
they are located in the exhaust system Where ? how many 02 sensors on a 2003 Pontiac Montana
Oxygen sensors are located in the exhaust manifolds & in the exhaust pipes on most vehicles
where are the oxygen sensors on a 2000 Pontiac grand am and how do you change them?
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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On the 2.4 L the up stream O2 sensor is located in the exhaust manifold between the engine and the firewall. It has a single wire coming out of it. I believe it will be a purple wire. The down stream, heated O2 sesor is located under the car after the catalytic converter in the ehaust piping. It will have four wires coming from it.
It depends on which o2 sensor.
The oxygen sensors are located in the exhaust pipes.
The upstream O2 sensor is mounted in the ehxaust manifold The downstream O2 sensor is mounted in the exhaust pipe after the catalytic converter
The upstream O2 sensor is mounted in the ehxaust manifold The downstream O2 sensor is mounted in the exhaust pipe after the catalytic converter