Quote:
Originally Posted by BART
It has nothing to do with recording heat, it measures oxygen content in the exhaust and all cars that are OBD2 have them both before and after the cat. I will also agree with all those above that having the cat that far back will not let it work efficiently. Being a 92 it will most likely only have one o2 sensor.
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Very true, how ever a vehicle with more then one bank such as a v6 may use two oxygen sensors after each maniflold. But even most v6 have a Y pipe connecting both maniflod with one sensor after the Y. But some with dual exhaust would of had two PRE cat o2 sensors.