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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 )
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The emergency flashers for the 1997 Mercury Cougar are on top of the steering column behind the wheel.
i heard it is inside the catlitic converter i am just repeting what i heard do not know for sure.
Passenger ===================================================== Actually , bank 2 is the drivers side of the engine in a Mercury Mountaineer
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On a 1997 Mercury Cougar : The engine oil dipstick is on the drivers side of the engine ( for the 3.8 liter V6 and the 4.6 liter V8 )
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I wasn't aware that there was a middle oxygen sensor. I have a 1997 Villager that was vandalized and the catalytic converter and O2 sensors were stolen. From what my mechanic tells me and Auto Zone there are only 2 sensors, one in front of the catalytic converter and one behind it.
The 1997 Mercury Cougar gas tank holds ( 18 U.S. gallons )
The fuse layout for a 1997 Mercury Cougar can be found in the service manual or on the back of the fuse panel door. It details what each fuse connects to and its rating.