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.
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HOMESERVICE MANUALSLINCOLN2011MKZ FWD V6-3.5LREPAIR AND DIAGNOSISPOWERTRAIN MANAGEMENTCOMPUTERS AND CONTROL SYSTEMSKNOCK SENSORSERVICE AND REPAIR
2011 Lincoln MKZ FWD V6-3.5L
Knock Sensor: Service and Repair
2011 Lincoln MKZ FWD V6-3.5LSECTION Service and Repair
Knock Sensor (KS)
Removal and Installation
1. Remove the thermostat housing. For additional information, refer to Engine Cooling Service and Repair.
2. Remove the lower intake manifold. For additional information, refer to Engine - 3.5L Lower Intake Manifold.
3. Remove the coolant tube.
- Discard the O-ring seal.
4. Disconnect the Knock Sensor (KS) electrical connector.
5. NOTICE: Only use hand tools when removing or installing the Knock Sensor (KS) or damage to the KS can occur.
Remove the 2 bolts and the KS.
- To install, tighten to 20 Nm (177 lb-in).
6. To install, reverse the removal procedure.
- NOTE: Genuine Mazda(R) Extended Life Coolant and Motorcraft(R) Specialty Green Engine Coolant are very sensitive to light. Do NOT allow these products to be exposed to ANY LIGHT for more than a day or two. Extended light exposure causes these products to degrade.
Lubricate the new O-ring seal with clean engine coolant.
RENDER: 1.0x
NO RELATED
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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.