I need location of oxygen senser where it locate at? I need a schamatic of all of the sensers.

find the plug unplug it use a O2 socket turn ounter clockwise to remove should be located in the exhaust manifold or infront of the cat teh one behind the cat is the downstreme

For 1997 Mercury Grand Marquis 4.6L SFI 8cyl the Oxygen Sensor is located under vehicle, passenger side, below seating area, mounted in exhaust pipe in rear of catalytic converter.

Doesn't have one it does have a mass airflow senser and it's in the air intake hose on top of the air filter box. If the hose to the throttle body leaks in any kind of way ( attached hoses off or leaking cracked hose your gat Map codes the the airflow senser isn't getting full flow and theirs a problem that needs corrected check everything before changing the senser though as it's expensive and the senser is'nt returnable if your wrong.

they will be on both side of the engine block and they thread in clockwise.

If the oxygen sensor indicates lean, the engine is lean, its not a problem with the oxygen sensor. Have a repair shop check it out and stay away from auto zone.

The oxygen sensor is located in the flow of exhaust and there will be two. the first is at the exit of the exhaust manifold where the head pipe attaches before the converter and the other is just after the cat converter.












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the blower resistor is under the hood at the firewall on pass side... there are no screws just tabs holding it in place... the pigtail is usually needed when the resistor goes bad it melts the harness

The only thing that comes out of the exhaust with a wire coming from it, is the oxygen senser. It is right behind the manafold.

HI
IT WAS LOCATE BEHIND THE ENGINE ....

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