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 MANUALSCHEVROLET2004MALIBU V6-3.5L VIN 8REPAIR AND DIAGNOSISPOWERTRAIN MANAGEMENTCOMPUTERS AND CONTROL SYSTEMSAIR FLOW METER/SENSORSERVICE AND REPAIR
2004 Chevrolet Malibu V6-3.5L VIN 8
Air Flow Meter/Sensor: Service and Repair
2004 Chevrolet Malibu V6-3.5L VIN 8SECTION Service and Repair
MASS AIR FLOW (MAF) SENSOR REPLACEMENT
REMOVAL PROCEDURE
1. Remove the positive crankcase ventilation fresh air tube from the air cleaner intake duct.
2. Disconnect the mass air flow (MAF) sensor electrical connector.
3. Loosen the clamps and remove the air cleaner intake duct with the MAF sensor from the throttle body and the air cleaner housing cover.
4. Loosen the clamp and remove the MAF sensor from the air cleaner intake duct.
INSTALLATION PROCEDURE
NOTE: Refer to Fastener Notice in Service Precautions.
1. Install the MAF sensor to the air cleaner intake duct.
Tighten
Tighten the clamp to 2 N.m (18 lb in).
2. Install the air cleaner intake duct with the MAF sensor to the throttle body and the air cleaner housing cover.
Tighten
Tighten the clamps to 2 N.m (18 lb in).
3. Connect the MAF sensor electrical connector.
4. Install the positive crankcase ventilation fresh air tube to the air cleaner intake duct.
5. Start and idle the engine.
6. Inspect the air intake duct for leaks.
REMOVAL PROCEDURE
1. Remove the positive crankcase ventilation fresh air tube from the air cleaner intake duct.
2. Disconnect the mass air flow (MAF) sensor electrical connector.
3. Loosen the clamps and remove the air cleaner intake duct with the MAF sensor from the throttle body and the air cleaner housing cover.
4. Loosen the clamp and remove the MAF sensor from the air cleaner intake duct.
INSTALLATION PROCEDURE
NOTE: Refer to Fastener Notice in Service Precautions.
1. Install the MAF sensor to the air cleaner intake duct.
Tighten
Tighten the clamp to 2 N.m (18 lb in).
2. Install the air cleaner intake duct with the MAF sensor to the throttle body and the air cleaner housing cover.
Tighten
Tighten the clamps to 2 N.m (18 lb in).
3. Connect the MAF sensor electrical connector.
4. Install the positive crankcase ventilation fresh air tube to the air cleaner intake duct.
5. Start and idle the engine.
6. Inspect the air intake duct for leaks.
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.