On a 1998 Ford Expedition :
Bank 1 is the passenger side of the engine ( 4.6 and 5.4 )
Sensor 1 would be close to the engine BEFORE the exhaust enters the catalytic converter
Sensor 2 would be AFTER the exhaust has passed through the catalytic converter ( also called a catalyst monitor )
On a 1998 Ford F-150 or Ford Expedition , 5.4 Bank 2 is the drivers side of the engine Sensor 1 would be close to the engine BEFORE the exhaust enters the catalytic converter
Bank 2 is the drivers side of the engine in a Ford Expedition
Bank 1 is the passenger side of the engine in a Ford Expedition
Where are the Bank 1 Sensor 1 oxygen sensor on a 1998 ford explorer?
where is speed sensor location 98 ford expedition 4.6 engine nocruise control
Bank 2 is the drivers side of the engine in a Ford Expedition Sensor 2 is after the catalytic converter ( downstream )
Bank 2 is the drivers side of the engine in your Ford Expedition Sensor 1 is in the exhaust BEFORE it enters the catalytic converter ( upstream )
Bank # 1 is the passenger side of the engine in a Ford Expedition Sensor # 1 would be before the catalytic converter ( upstream sensor ) Sensor # 2 would be after the catalytic converter ( downstream sensor )
Bank 1 is the passenger side of the engine in your Ford Expedition Sensor 1 is in the exhaust before it enters the catalytic converter ( upstream )
In a Ford Expedition bank 1 is the passenger side of the engine , bank 2 is the drivers side
Bank 1 is the passenger side of the engine in your Ford Expedition Sensor 1 is in the exhaust system before the exhaust enters the catalytic converter ( upstream )
Might be part of the wheel bearing.