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…
Trouble code P0171 means: Fuel System Too Lean (Cylinder Bank 1)
Bank 2 is the drivers side of your 4.2 liter V6 engine in a 1998 Ford F-150
6 quarts ( 5.7 liters ) with filter change for the 4.2 L V6 engine
2000 F150 v6 4.2L has 205HP
On a 2002 Ford E-150 , 4.2 liter V6 engine : Bank 1 is the PASSENGER SIDE of the engine
yes it is
Bank 2 is the drivers side of your 4.2 liter V6 engine in a 2005 Ford F-150
EVAP Purge Solenoid Stuck Open or Closed
there should be 4 two are pre cat and two are post cat
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On a V6 or V8 engine, the passenger side cylinders are bank one, so the catalytic converter on the passenger side will be bank one. The driver's side is bank two.