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.
2011 Ford Flex SEFACTORY OEM SERVICE PROCEDURE
Electronic Engine Control System
- Specifications
- Description And Operation
- Diagnosis And Testing
- Removal And Installation
- Camshaft Position (CMP) Sensor - 3.5L
- Camshaft Position (CMP) Sensor - 3.5L GTDI
- Crankshaft Position (CKP) Sensor
- Powertrain Control Module (PCM)
- Mass Air Flow (MAF) Sensor
- Cylinder Head Temperature (CHT) Sensor - 3.5L
- Cylinder Head Temperature (CHT) Sensor - 3.5L GTDI
- Throttle Position (TP) Sensor
- Heated Oxygen Sensor (HO2S) and Catalyst Monitor Sensor - Exploded View
- Heated Oxygen Sensor (HO2S)
- Catalyst Monitor Sensor
- Fuel Rail Pressure (FRP) Sensor
- Knock Sensor (KS) - 3.5L
- Knock Sensor (KS) - 3.5L GTDI
- Variable Camshaft Timing (VCT) Oil Control Solenoid
- Intake Air Temperature (IAT) Sensor
- Turbocharger Boost Pressure (TCBP)/Charge Air Cooler Temperature (CACT) Sensor
- Manifold Absolute Pressure (MAP)/Intake Air Temperature 2 (IAT2) Sensor
Factory Service Tools
Use the Manual With the Right Hardware
Pair factory procedures with proven DIY tools so the instructions are easier to execute.
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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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