4.7L High-Output Engine Only

The 2 knock sensors are bolted into the cylinder block under the intake manifold (Fig 1 ).

Fig 1: Knock Sensor Location - 4.7L H.O.

Courtesy of DAIMLERCHRYSLER CORP.

NOTE: The left sensor is identified by an identification tag (LEFT). It is also identified by a larger bolt head. The Powertrain Control Module (PCM) must have and know the correct sensor left/right positions. Do not mix the sensor locations.

Disconnect knock sensor dual pigtail harness connector from engine wiring harness connector. This connection is made near the right/rear of intake manifold (Fig 2 ).

Fig 2: Knock Sensor Electrical Connector - 4.7L H.O.
Courtesy of DAIMLERCHRYSLER CORP.
Remove intake manifold. Refer to appropriate ENGINE article.
Remove sensor mounting bolts (Fig 1 ). Note foam strip on bolt threads. This foam is used only to retain the bolts to sensors for plant assembly. It is not used as a sealant. Do not apply any adhesive, sealant or thread locking compound to these bolts.
Remove sensors from engine.