Mercury 3L3Z-12B579-BA Sensor Assembly

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To remove the air intake duct, disconnect the electrical connector from the MAF/Intake Manifold Temperature Sensor located on the air filter housing cover. Then, remove the MAF/Intake Manifold Temperature Sensor mounting fasteners and take out the sensor from the air filter housing. To reinstall, follow the reverse steps of removal.

To replace the Engine Coolant Temperature (ECT) sensor, drain the cooling system on 2011 models, wrap the new sensor's threads with Teflon sealing tape, unplug the electrical connector, and remove the sensor near the thermostat housing. For 2001 and later 2.3L models, a Cylinder Head Temperature (CHT) sensor is used; disconnect the battery, expose the electrical connector, unscrew and replace the CHT sensor. Oxygen sensor replacement involves disconnecting the battery, raising the vehicle, and removing the sensor using the appropriate tool, applying anti-seize compound to new threads, and securing the installation. Throttle Position Sensor (TPS) replacement requires disconnecting the battery, removing the throttle body cover, unfastening the TPS, and ensuring proper alignment during installation. Mass Airflow Sensor (MAF) replacement involves disconnecting the battery, detaching the electrical connector, removing the MAF sensor, and reinstalling it with a new gasket for 2011 models. Air conditioning clutch control involves PCM control of the clutch relay and checking fuses for malfunctions. Vehicle Speed Sensor (VSS) replacement, applicable to 1997 and earlier models, entails disconnecting the electrical connector, removing the retaining bolt, and reversing the procedure. Intake Manifold Temperature Sensor replacement includes disconnecting the battery, unplugging the sensor connector, and removing the sensor from the intake manifold. Idle Air Control (IAC) valve replacement requires disconnecting the battery, removing the IAC valve cover, disconnecting the electrical connector, and unfastening the screws. Power steering pressure switch inspection involves checking fuses and circuits for issues affecting idle quality. Camshaft Position (CMP) sensor replacement varies by model, involving disconnecting the battery, detaching the electrical connector, removing the sensor, and aligning the new one correctly. Crankshaft Position (CKP) sensor replacement includes disconnecting the battery, removing components like the accessory drive belt or alternator, unscrewing the sensor, and installing a new one with specific alignment procedures for different models. Brake Light Switch or Brake Pedal Position (BPP) Sensor information states its role in indicating brake application and its location on the brake pedal assembly.

Remove the air intake duct. Disconnect the electrical connector from the MAF/Intake Manifold Temperature Sensor. Remove the MAF/Intake Manifold Temperature Sensor mounting fasteners and remove the sensor from the air filter housing. Installation is the reverse of removal.

To remove the air intake duct, disconnect the electrical connector from the MAF/Intake Manifold Temperature Sensor located on the air filter housing cover. Then, remove the MAF/Intake Manifold Temperature Sensor mounting fasteners and take out the sensor from the air filter housing. To reinstall, follow the reverse steps of removal.