1997 was the first year of the Mercury Mountaineer and the only engine
available was the 5 liter over head valve ( OHV ) design with ( 2 ) valves per
engine cylinder
Passenger ===================================================== Actually , bank 2 is the drivers side of the engine in a Mercury Mountaineer
Bank 1 is the passenger side of the engine and bank 2 is the drivers side of the engine on your 1997 Mercury Mountaineer 5.0 liter V8 engine
In a 1997 Mercury Mountaineer : In the Power Distribution Box ( which is " live " ) located in the drivers side of the engine compartment ( relay # 2 is the horn relay )
On a 1997 Mercury Mountaineer ( V6 and V8 ) Bank 2 is the drivers side of the engine
Bank 2 is the drivers side of the engine in a Mercury Mountaineer Sensor 2 is in the exhaust after the catalytic converter ( downstream )
Bank 2 is the drivers side of the engine in your Mercury Mountaineer Sensor 2 is in the exhaust after the catalytic converter
FIREWALL 4 - 8 3 - 7 2 - 6 1 - 5 FRONT
How to take the door panel off a 2002 mercury mountaineer?
There are a total of ( 4 oxygen sensors ) according to the engine wiring schematic for the 1997 Mercury Mountaineer in my Haynes repair manual ( 2 oxygen sensors are " upstream " sensors used by the PCM to adjust the air / fuel ratio of the engine ) ( 2 oxygen sensors are " downstream " sensors / catalyst monitors )
( 2 ) There is a fuse panel in the end of the dash on the drivers side ( the plastic fuse panel cover is visible with the drivers door open ) and the Power Distribution Box in the engine compartment on the 1997 to 2001 Mercury Mountaineer
Bank 2 is the drivers side of the engine in a 2002 Mercury Mountaineer Sensor 2 is after the catalytic converter ( downstream )
V6 firewall 3 - 6 2 - 5 1 - 4 front of Mercury Mountaineer ============================= V8 firewall 4 - 8 3 - 7 2 - 6 1 - 5 front of Mercury Mountaineer