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5.7L V8 Two sensors (1) are used. Each sensor is bolted into 1. Raise vehicle. 2. Disconnect knock sensor electrical connector (5). 3. Remove sensor mounting bolt (2). Note foam strip on bolt threads. This foam is used only to retain the 4. Remove sensor from engine. INSTALLATION 3.7L V-6 / 4.7L V-8 NOTE: The left sensor is identified by an identification tag (LEFT). It is also identified by a larger bolt head. 1. Thoroughly clean knock sensor mounting holes. 2. Install sensors into cylinder block. NOTE: Over or under tightening the sensor mounting bolts will affect knock sensor performance, possibly NOTE: Note foam strip on bolt threads. This foam is used only to retain the bolts to sensors for plant 3. Install and tighten mounting bolts. Refer to torque specification. 4. Install intake manifold. Refer to Engine section. 5. Connect knock sensor wiring harness to engine harness at rear of intake manifold. 5.7L V-8 1. Thoroughly clean knock sensor mounting hole. 2. Install sensor into cylinder block. NOTE: Over or under tightening the sensor mounting bolts will affect knock sensor performance, possibly HB IGNITION SYSTEM - SERVICE INFORMATION 8I - 23 |