All O2 sensors are mounted on the exhaust system. Crawl under the car and count them.
It is screwed into the forward side of the catalytic converter.It is screwed into the forward side of the catalytic converter.
Not sure which sensor u are talking about but 1999 Aurora's have 4 O2 sensors, one on each header and one before and 1 after the catalytic converter.
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Post is the O2 sensor located behind the converter and Pre is the sensor located in front of the converter. Sometimes also referred to as upstream and downstream.
The upstream heated oxygen sensor is located ahead of the catalytic converter The downstream heated oxygen sensor is located behind the converter
The upstream heated oxygen sensor is located ahead of the catalytic converter The downstream heated oxygen sensor is located behind the converter
The upstream heated oxygen sensor is located ahead of the catalytic converter The downstream heated oxygen sensor is located behind the converter
The upstream heated oxygen sensor is located ahead of the catalytic converter The downstream heated oxygen sensor is located behind the converter
The upstream heated oxygen sensor is located ahead of the catalytic converter The downstream heated oxygen sensor is located behind the converter
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.