2
they have 2 o2 sensors on the muffler ELIA
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Okay basically no idea hope that helped LOL
the vehicle in question has 2 oxygen sensors one in the manifold and one by the converter.
Where are the vacuum hose located at on '97 Pontiac grand am? Where are the vacuum hose located at on '97 Pontiac grand am?
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No.
Yes
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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 )