Ford 2R3Z-12A699-AA Sensor - Engine Knock

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The knock sensor is located in the valley between the cylinder heads on V6 engines, and on the left side of the block on 2.3L engines, just below the intake manifold. Disconnect the cable from the negative battery terminal. On 2.3L engines, disconnect the knock sensor harness connector, then remove the sensor mounting bolt and the sensor. Note that once the knock sensor is removed, it cannot be reused and a new sensor must be installed. On V6 engines, remove the intake manifold. On early V6 engines, remove the noise shield. Disconnect the knock sensor electrical connector. The knock sensor connector location varies with the model year and date of manufacture. On some models, the knock sensor connector is located on the left end of the firewall, but on other models, the connector is located in the valley between the cylinder heads, closer to the knock sensor. Remove the knock sensor retaining bolt and remove the knock sensor. Installation is the reverse of removal, ensuring that the knock sensor retaining bolt is tightened securely.