Air Flow Meter/Sensor: Description and Operation

2001 Chevrolet Lumina V6-3.1L VIN JSECTION Description and Operation
The MAF sensor is located between the throttle body and air cleaner assembly. The MAF sensor is used to measure the amount of air entering the engine. The PCM uses this information to determine the operating condition of the engine and to control fuel delivery. For further information, refer to Information Sensors/Switches Description.
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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.