Sensor 1 would be UPSTREAM before the exhaust enters the catalytic
converter
The upstream sensor is screwed into the rear exhaust manifold. The downstream is screwed into the catalytic converter.The upstream sensor is screwed into the rear exhaust manifold. The downstream is screwed into the catalytic converter.
both. upstream is under the hood, and the downstream is by the catalytic converter.
It should be equipped with both.
Right behind the Cat. toward the back of the car.
The upstream oxygen sensor is mounted in the exhaust manifold The downstream oxygen sensor is mountedin the exhaust pipe after catalytic converter
The upstream O2 sensor is mounted in the ehxaust manifold The downstream O2 sensor is mounted in the exhaust pipe after the catalytic converter
the upstream o2 sensor is mounted in the exhaust before the catalytic converter and the downstream sensor is after the cat. conver.
The upstream O2 sensor is mounted in the ehxaust manifold The downstream O2 sensor is mounted in the exhaust pipe after the catalytic converter
The upstream heated oxygen sensor is located ahead of the catalytic converter The downstream heated oxygen sensor is located behind the converter
No. Upstream and downstream O2 sensors are different for a 2000, 1500, Chevrolet Suburban with the 5.3 engine.
The upstream heated oxygen sensor is located ahead of the catalytic converter The downstream heated oxygen sensor is located behind the converter
It is located on the muffler by the moter and looks like a sparkplug with wire attached at the end. To be specific, my 2000 Durango has 1 upstream oxygen sensor and 1 downstream oxygen sensor. Both are located on the exhaust pipe. The upstream is between the engine and catalytic converter. The downstream is located between the catalytic converter and muffler. - Mick