Mercury Workshop Service and Repair Manuals > Cougar/XR7 V8-4.6L VIN W (1997) > Powertrain Management | Sensors and Switches - Powertrain Management | Sensors and Switches - Computers and Control Systems | Oxygen Sensor | Component Information | Locations | Heated Oxygen Sensor, Bank 1/Sensor 1 (#11)

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Transmission View

The Heated Oxygen Sensor #4 is located at the rear of the engine, in exhaust pipe after catalytic converter.

OBD-II Heated Oxygen Sensor Numbering Convention

Mercury Workshop Service and Repair Manuals