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 MANUALSFORD2004E 350 V10-6.8L VIN SREPAIR AND DIAGNOSISPOWERTRAIN MANAGEMENTCOMPUTERS AND CONTROL SYSTEMSAIR FLOW METER/SENSORSERVICE AND REPAIR
2004 Ford E 350 V10-6.8L VIN S
Air Flow Meter/Sensor: Service and Repair
2004 Ford E 350 V10-6.8L VIN SSECTION Service and Repair
MASS AIR FLOW (MAF) SENSOR
REMOVAL
1. Disconnect the battery ground cable.
2. Remove the air cleaner assembly.
3. CAUTION: Do not tamper with the mass air flow (MAF) sensing elements located in the airflow meter. Tampering may result in unit failure.
NOTE: The MAF sensor and body are calibrated and serviced as a unit.
Open the air cleaner.
- Release the air cleaner clamp.
- Separate the inlet side from the outlet side of the air cleaner.
4. Remove the MAF assembly.
5. Disconnect the MAF sensor electrical connector.
6. Remove the nuts and separate the MAF sensor from the MAF sensor plate.
INSTALLATION
1. CAUTION: The grommet used to seal the engine air cleaner housing at the extension harness must be fully seated. Failure to do so will result in unmetered air entering the engine.
NOTE:
- Use the alignment notch to correctly align the inlet side and the outlet side of the engine air cleaner.
- When reinstalling the mass air flow (MAF) sensor, make sure wires are not trapped behind MAF. Make sure electrical connector is pointing up on installation.
To install, reverse the removal procedure.
REMOVAL
1. Disconnect the battery ground cable.
2. Remove the air cleaner assembly.
3. CAUTION: Do not tamper with the mass air flow (MAF) sensing elements located in the airflow meter. Tampering may result in unit failure.
NOTE: The MAF sensor and body are calibrated and serviced as a unit.
Open the air cleaner.
- Release the air cleaner clamp.
- Separate the inlet side from the outlet side of the air cleaner.
4. Remove the MAF assembly.
5. Disconnect the MAF sensor electrical connector.
6. Remove the nuts and separate the MAF sensor from the MAF sensor plate.
INSTALLATION
1. CAUTION: The grommet used to seal the engine air cleaner housing at the extension harness must be fully seated. Failure to do so will result in unmetered air entering the engine.
NOTE:
- Use the alignment notch to correctly align the inlet side and the outlet side of the engine air cleaner.
- When reinstalling the mass air flow (MAF) sensor, make sure wires are not trapped behind MAF. Make sure electrical connector is pointing up on installation.
To install, reverse the removal procedure.
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.