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.
2021 Jeep Renegade Islander, FWDFACTORY OEM SERVICE PROCEDURE
Removal And Installation: Installation
- Position the knock sensor, then install and tighten the NEW fastener to the proper torque specification. Refer to TORQUE SPECIFICATIONS .
- Connect the knock sensor wire harness connector.
- Position the lower heat shield of the exhaust manifold, then install and securely tighten the fasteners.
- Position the upper heat shield of the exhaust manifold, then install and securely tighten the fasteners.
- Position the wire harness bracket for the upstream oxygen sensor, then install and securely tighten the nut. Engage the wire harness in the retaining clips.
- Connect the wire harness connector for the upstream oxygen sensor.
- Install the engine cover. Refer to COVER, ENGINE, REMOVAL AND INSTALLATION .
- Connect the negative battery cable. If equipped with an Intelligent Battery Sensor (IBS), connect the IBS connector.
- Remove the support and lower the vehicle.
Factory Service Tools
Use the Manual With the Right Hardware
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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.