Grand Cherokee 2WD Limited V8-4.7L (2002)
Fig.23 Knock Sensor Elec. Connector - 4.7L H.O.
1. Disconnect knock sensor dual pigtail harness connector from engine wiring harness connector. This connection is made near the right/rear of
intake manifold.
2. Remove intake manifold. Refer to Engine section.
3. Remove sensor mounting bolts. 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.
4. Remove sensors from engine.
INSTALLATION
1. Thoroughly clean knock sensor mounting holes.
2. Install sensors into cylinder block.
NOTE:
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Over or under tightening the sensor mounting bolts will affect knock sensor performance, possibly causing improper spark control. Always use
the specified torque when installing the knock sensors. The torque for the knock senor bolt is relatively light for an 8 mm bolt.
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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.
3. Install and tighten mounting bolts. Bolt torque is critical. Refer to torque specification.
4. Install intake manifold. Refer to Engine section
5. Connect knock sensor pigtail wiring harness to engine wiring harness near right I rear of intake manifold.
