The oxygen sensor is located in the exhaust manifold near the firewall. It is easier to get to the sensor from under the vehicle.
they are located in the exhaust system Where ? how many 02 sensors on a 2003 Pontiac Montana
Under the steering wheel
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.
In a 2003 Pontiac Montana, the oxygen sensors are located in two main areas: the upstream (pre-cat) sensor is situated in the exhaust manifold or just before the catalytic converter, while the downstream (post-cat) sensor is located after the catalytic converter in the exhaust system. These sensors monitor the oxygen levels in the exhaust gases to help optimize engine performance and emissions. Accessing them may require lifting the vehicle for easier reach.
In exhaust pipe before catalytic converter unscrew to replace
On a 2001 Pontiac Montana, Bank 1 Sensor 1 refers to the upstream oxygen sensor located on the driver's side of the vehicle, before the catalytic converter. It is typically positioned on the exhaust manifold or the first section of the exhaust pipe. To access it, you may need to lift the vehicle for better visibility and reach.
The 1991 Pontiac Grand Prix oxygen sensor is located on the outside of the air filter housing. You will find the sensor on the back side of the air filter housing.
To answer this i will need to know whatsize engine you have.
Screwed into the exhaust pipe
Oxygen sensors are located in the exhaust manifolds & in the exhaust pipes on most vehicles
Yes
There are two oxygen sensors, there is one located in the exhaust system before the catalytic converter and one after the catalytic converter.