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Sensor, Knock: Removal: 4.0L

Fig 1: Identifying EGR Tube, PCV & Power Brake Booster Vacuum Hoses
GC0127935Courtesy of CHRYSLER LLC
  1. Perform the fuel system pressure relief procedure. Refer to FUEL DELIVERY, GAS [EKG, EGS], STANDARD PROCEDURE .
  2. Disconnect and isolate the negative battery cable.
  3. Drain the cooling system. Refer to DRAINING COOLING SYSTEM .
  4. Remove the upper intake manifold including EGR tube, PCV, purge and power brake booster vacuum hoses. Refer to MANIFOLD, INTAKE, REMOVAL .
    Fig 2: Fuel Rail & Lower Intake Manifold
    GC0095476Courtesy of CHRYSLER LLC
  5. Remove fuel rail and lower intake manifold. Refer to LOWER INTAKE MANIFOLD .
    Fig 3: Knock Sensor
    GC0081687Courtesy of CHRYSLER LLC
  6. Remove sensor mounting bolt. Note foam strip on bolt threads. This foam is used only to retain the bolt to sensor for plant assembly. It is not used as a sealant. Do not apply any adhesive, sealant or thread locking compound to this bolt.
  7. Remove knock sensor (3) from engine.
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