Oxygen Sensor
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
If everything else fells there always heat. Heat them up and they will come right off.
Sometimes it will take 15 minutes or take a few hours it depends on your luck…
The bank 1 oxygen sensor for a 2005 Ford F-150 is located on the driver's side of the engine, upstream of the catalytic converter. It is typically situated in the exhaust manifold or the exhaust pipe just after the manifold. This sensor monitors the oxygen levels in the exhaust gases to help optimize fuel efficiency and emissions.
Disconnect the battery. On the side of the throttle body, disconnect the wiring from the position sensor. Remove the bolts from the sensor, and lift the sensor off, reverse the procedure to install the new one.
On your Ford F-150 : Bank 1 is the passenger side of the engine Sensor 1 is somewhere in the exhaust close to the engine before the exhaust enters the catalytic converter ( upstream )
Bank 1 is the passenger side of your engine , sensor 1 is before the catalytic converter ( upstream ) on your Ford F-150
it is located on the passanger sideand its the one befor the cat converter ----------------------------------------------------------------------------------- actually , bank 2 is the drivers side of the engine
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