F 150 Heritage 4WD Pickup V8-5.4L CNG VIN M (2004)
Air Flow Meter/Sensor: Service and Repair
MASS AIR FLOW (MAF) SENSOR
REMOVAL
1. Disconnect the battery ground cable.
2. CAUTION: Do not tamper with the sensing elements located in the mass air flow (MAF) sensor. Tampering may result in unit failure.
Open the engine air cleaner.
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Disconnect the MAF sensor electrical connector from the wiring harness.
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Release the air cleaner clamp.
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Separate the inlet side of the air cleaner from the outlet side of the air cleaner.
3. CAUTION: Do not cut the MAF sensor wires when cutting the tape on the wire loom.
Cut the tape on the wire loom of the extension harness.
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Peel back the wire loom from the extension harness near the grommet in the air cleaner.
4. Remove the grommet from the outlet side of the air cleaner and slide the grommet down the extension harness.