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 MANUALSMERCURY2009MILAN PREMIER, 3.0 1, AWDREPAIR AND DIAGNOSISEXTERNAL PAGESDIFFERENT CARSECTION 1710 (ENGINE CONTROLS - ELECTRONIC ENGINE CONTROLS)REMOVAL & INSTALLATIONHEATED OXYGEN SENSOR (HO2S)NOTES
2009 Mercury Milan Premier, 3.0 1, AWD
Heated Oxygen Sensor (HO2S): Notes
2009 Mercury Milan Premier, 3.0 1, AWDSECTION Notes
WARNING: This page is about a different car, the 2010 Lincoln Town Car. However, it is still accessible from the selected car via links, so may be relevant.
Special Tools
| Illustration | Tool Name | Tool Number |
|---|---|---|
| Socket, Exhaust Gas Oxygen Sensor | 303-476 (T94P-9472-A) |
Material
| Item | Specification |
|---|---|
| High Temperature Nickel Anti-Seize Lubricant XL-2 (US); CXG-2-B (Canada) |
ESE-M12A4-A |
| Penetrating and Lock Lubricant (US); Penetrating Fluid (Canada) XL-1 (US); CXC-51-A (Canada) |
- |
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.