Revolutionize Engine Efficiency with Oxygen Sensor Bank 1

Nifeida 13474 Oxygen Sensor OE Fitment O2 Sensor 1 Sensor 2 Upstream Downstream Auto Parts Fit 234-4018 AFS106 Replacement For Buick, Cadillac, Ponti. Sensor 1 is actually right after the exhaust manifold. Sensor 2 is after the flex pipe, behind the cat. Trust me. Already changed mine. Right: 1 is before the ... When I open the hood and look straight down I see a sensor in the exhaust right behind the radiator. Is this the oxygen sensor (bank 2)? Is ... It is a Downstream sensor that measures the efficiency of the catalyst, it is only there for the emission tests. Here you can find a picture of the location. Usually O2 sensors are refered to as Bank 1 and Bank 2. Bank 1 would be the front sensor before the cat and Bank 2 would be the sensor after the cat. PLEASE HELP.. My MPG has gone down to 13MPG, I get a 2002 code and a bad reading on Bank 1 sensor 3. I cleaned the EGR and the MAP ... On the way there my CEL came on. Since I was spending $1000 on tires they read the code for me and said it was an oxygen sensor. They asked if I ... Sensor one in front of cat converter switches between 250 mv and 700 mv about 40 tines a second as each cylinder fires at 600 RPM idle. Buy Oxygen (O2) Sensor - NGK 21555 online from NAPA Auto Parts Stores. Get deals on automotive parts, truck parts and more. ... O2 sensors relative to the bank and sensor number. Note: As ... 1 upstream O2 sensor and 1 down stream O2 sensor. In this case they ...