Oxygen Sensor (Ford Expedition, Ford F-150, Navigator)
There are actually (4) O2 sensors on your truck. If you look inside the wheel wells behind the fender liner, right about where the frame is one O2 sensor, the other is underneath the truck about half way back in relation to the transmission. If you see where the exhaust joints together, you went about 6" too far.
When you start looking at the O2 sensors, they are normally numbered something like "Bank 1 Sensor 1" Bank 1 is on the passenger side; Bank 2 is on the driver's side. Sensor 1 is the upstream sensor (near the frame, between the block and the cat) and Sensor 2 is near the Y-pipe (downstream of the cat).
Normally it is the upstream sensors (sensor 1) that go first. They see the harshest conditions.
You will need;
Oxygen Sensor Socket
Anti-Seized
Penetrating Oil
I have even used a small plumbers propane tank and heat it up and it help get them free.
Sometimes it will take 15 minutes or take a few hours it depends on your luck…
Bank 1 refers to the location of the bank of cylinders that contain the #1 cylinder. Sensor 2 refers to the Oxygen sensor after the catalytic converter. Bank 1 is the left side of the engine, in this case against the firewall, and Sensor 2 is past the catalytic converter on that bank.
bank 2 is opposite #1 cylinder and sensor 1 is front.
bank 1 = passenger side bank 2 = driver side sensor 1 = pre-cat sensor 2 = post-cat
bank 1 means cylinder 1-3 side, sensor 2 means the sensor after the catalytic converter.
Bank 1 is the driver's side, bank 2 is the passenger side. Then you will have sensor 1 and sensor 2. Sensor 1 is before the catalytic converter (closest to the engine), and sensor 2 is after the catalytic converter. So Bank 1, Sensor 2 is: the driver's side , after the catalytic converter.
where is the oxygen sensor location on a 1998 explorer bank 2 sensor
Bank one is the side of the engine with cylinder #1. Sensor two is after the catalytic converter.
Bank #1 is the passenger side of the engine , and sensor # 2 is in the exhaust after the catalytic converter ( downstream )
That is the sensor in the catalytic converter.
Bank 1 sensor 1 is upstream bank 1 sensor 2 is downstream
The oxygen sensor location for a Hyundai Santa Fe bank 1 sensor 2 the radiator and A/C line-Ox sensor body. The replacement sensors is available at most auto parts stores.
bank 1 is the side with # 1 spark plug on the same side sensor 1 is the sensor first (before cat converter) sensor 2 would be after the converter