Knock Sensor - Removal

5.7L / 6.4L





Two knock sensors are used. Each sensor is bolted to the outside of cylinder block below the exhaust manifold.

1. Disconnect and isolate the negative battery cable.
2. Raise and support the vehicle.
3. Remove the heat shield (1) from knock sensor (shield snaps onto sensor).





4. Disconnect the knock sensor electrical connector (5).

NOTE: Note the foam strip on the knock sensor retaining bolt threads. This foam is only used to retain the bolts to the knock sensors for plant assembly. It is not used as a sealant. Do not apply any adhesive, sealant or thread locking compound to these bolts.

5. Remove the knock sensor retaining bolt (2).
6. Remove the knock sensor from the cylinder block.