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Borah M
grand am? my chk engine light came on in my car and thats the code autozone picked up off their machine. just wondering how important it is for my car so i can prioritize accordingly
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Iceplayr
A Oxygen Sensor is used to detect the chemicals in exhaust and based on the concentrations adjusts the computers control of the ignition, timing and fuel. With a bad O2 sensor you car can waste fuel, bad performance and the exhaust puts more chemicals into the atmosphere.
With a bad O2 sensor you will not pass a smog inspection. Dont buy a sensor from Auto Zone, it may be cheaper, but the quality is not there. An original part from your dealership is designed to last 150k + miles. I know of Bosch O2 sensors from Pep Boys, Auto Zone etc, failing in as little as 20k miles.
With a bad O2 sensor you will not pass a smog inspection. Dont buy a sensor from Auto Zone, it may be cheaper, but the quality is not there. An original part from your dealership is designed to last 150k + miles. I know of Bosch O2 sensors from Pep Boys, Auto Zone etc, failing in as little as 20k miles.
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Don B
The oxygen (O2) sensor is the primary measurement device for fuel control computations in your car to know if the engine is too rich or too lean. The O2 sensor is active anytime it is hot enough, but the computer only uses this information in the closed loop mode. Closed loop is the mode where all engine control sensors including the O2 sensor are used to get best fuel economy, lowest emissions, and good power.
An O2sensor is a chemical generator. It is constantly making a comparison between the oxygen inside the exhaust manifold and air outside the engine. If this comparison shows little or no oxygen in the exhaust manifold, a voltage is generated. The output of the sensor is usually between 0 and 1.1 volts. All spark combustion engines need the proper air fuel ratio to operate correctly. For gasoline this is 14.7 parts of air to one part of fuel. When the engine has more fuel than needed, all available oxygen is consumed in the cylinder and gasses leaving through the exhaust contain almost no oxygen. This sends out a voltage greater than 0.45 volts. If the engine is running lean, all fuel is burned, and the extra oxygen leaves the cylinder and flows into the exhaust. In this case, the sensor voltage goes lower than 0.45 volts. Usually the output range seen seen is 0.2 to 0.7 volts.
An O2sensor is a chemical generator. It is constantly making a comparison between the oxygen inside the exhaust manifold and air outside the engine. If this comparison shows little or no oxygen in the exhaust manifold, a voltage is generated. The output of the sensor is usually between 0 and 1.1 volts. All spark combustion engines need the proper air fuel ratio to operate correctly. For gasoline this is 14.7 parts of air to one part of fuel. When the engine has more fuel than needed, all available oxygen is consumed in the cylinder and gasses leaving through the exhaust contain almost no oxygen. This sends out a voltage greater than 0.45 volts. If the engine is running lean, all fuel is burned, and the extra oxygen leaves the cylinder and flows into the exhaust. In this case, the sensor voltage goes lower than 0.45 volts. Usually the output range seen seen is 0.2 to 0.7 volts.
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toby
its best to replace both of them if u have money