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 BASE, 2.3 Z, STANDARDREPAIR AND DIAGNOSISENGINE PERFORMANCEREMOVE, OVERHAUL & INSTALLELECTRONIC ENGINE CONTROL - 2.3
2009 Mercury Milan Base, 2.3 Z, Standard
Electronic Engine Control - 2.3
2009 Mercury Milan Base, 2.3 Z, StandardSECTION Electronic Engine Control - 2.3
- Specifications
- Description And Operation
- Diagnostic Tests
- Removal And Installation
- Camshaft Position (CMP) Sensor
- Crankshaft Position (CKP) Sensor
- Powertrain Control Module (PCM)
- Mass Air Flow (MAF) Sensor
- Heated Oxygen Sensor (HO2S) and Catalyst Monitor Sensor - Exploded View
- Heated Oxygen Sensor (HO2S)
- Catalyst Monitor Sensor
- Cylinder Head Temperature (CHT) Sensor
- Clutch Pedal Position (CPP) Switch
- Knock Sensor (KS)
- Variable Camshaft Timing (VCT) Oil Control Solenoid
- Manifold Absolute Pressure (MAP) Sensor
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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.