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Is it worth cleaning an O2 sensor?While some people choose to remove them and use a wire brush or an aerosol cleaner to remove deposits, we do not recommend trying to clean O2 sensors. We feel their function is too critical to risk damaging the sensors and possibly (and erroneously) altering the air-fuel mixture.
Are Bank 1 and Bank 2 O2 sensors the same?Q: Are bank 1 and bank 2 sensors the same? Bank 1 and bank 2 have similar sensors. However, bank 1 has two sensors, of which sensor 1 is located near the engine before the catalytic converter, an upstream sensor called pre CAT, and sensor 2 is located after the catalytic converter called post CAT, a downstream sensor.
How do you test if an 02 sensor is bad?Signs That Your Oxygen Sensor Is Bad. A Glowing Check Engine Light. The bright orange Check Engine light in your dashboard will usually glow if you have a bad oxygen sensor. ... . Bad Gas Mileage. ... . An Engine That Sounds Rough. ... . An Emissions Test Failure. ... . An Older Vehicle.. Is O2 sensor bank 1 sensor 1 upstream or downstream?Sensor 1 is the upstream oxygen sensor. It is the sensor that measures the oxygen content in the exhaust, providing an input to the computer, which determines how to adjust the air/fuel ratio. Sensor 1 is the sensor closest to the engine. Sensor 2 is the downstream oxygen sensor.
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