Grand Cherokee 4WD V8-4.7L Flex Fuel (2009)
Knock Sensor: Service and Repair
Knock Sensor - Removal
4.7L
1. Remove the intake manifold See: Engine, Cooling and Exhaust/Engine/Intake Manifold/Service and Repair/Removal and Replacement/Intake
Manifold - Removal
2. Remove the knock sensor bolt.
3. Remove the knock sensor (1).
4. Disconnect the knock sensor wiring harness to the engine harness (1) at the rear of the intake manifold by pressing on lock tab (2).
5. Thoroughly clean the knock sensor mounting hole.
