Safety Warning
DIY auto repair can cause serious injury, fire, or vehicle damage. These guides are for informational purposes only. Always follow OEM torque specs, wear PPE, and consult a certified mechanic if you are unsure. You are solely responsible for your safety.
Sensor, Knock: Removal: 3.6L
- Perform the fuel pressure release procedure. Refer to FUEL SYSTEM PRESSURE RELEASE .
- Disconnect and isolate the negative battery cable.
- Drain the cooling system. Refer to DRAINING .
- Remove the air cleaner housing assembly, upper and lower intake manifolds and the oil filter housing. Refer to HOUSING, OIL FILTER, REMOVAL
.NOTE:
The forward knock sensor (1) is known to the Powertrain Control Module (PCM) as knock sensor 1. The rear knock sensor (3) is known to the PCM as knock sensor 2.
- Remove the wire harness connector (4).NOTE:
There may be a foam strip on the bolt threads. This foam is used only to retain the bolts to the sensors for plant assembly. It is not used as a sealant. Do not apply any adhesive, sealant or thread locking compound to these bolts.
- Remove the mounting bolt (2) and knock sensor 1 (1) or knock sensor 2 (3).
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When to See a Mechanic
Stop DIY work and contact a certified mechanic immediately if any of the following apply:
- • You smell fuel, burning insulation, or see smoke.
- • Brakes feel soft, pull hard to one side, or make grinding noises.
- • The engine overheats, stalls repeatedly, or misfires under load.
- • You are missing required tools, torque specs, or safe lifting equipment.
- • You are not confident in the next step or safety outcome.
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