Mechanics

Mass Air Flow Sensor Service

Step by step guide on how to service an automotive mass air flow sensor, this article pertains to most MAF equipped cars.

Difficulty Scale: 2 of 10

Tools and Supplies Needed

  • Sensor safe carburetor cleaner
  • Shop towels
  • Screwdriver set
  • Protective gloves and eyewear

Begin with the car on level ground, in park with the emergency brake set.

Step 1 - Locate the mass air flow sensor located in the air intake portion of the air filter or intake tube.


Mass Air Flow Sensor

Step 2 - Once the sensor has been located, release the wiring connector to the sensor.


Removing Mass Air Flow Sensor Electrical Connector

Step 3 - After the electrical connector has been removed, loosen and remove the sensor mounting screws.


Removing Sensor Mounting Screws

Step 4 - Next, carefully lift the sensor from the housing while taking note of the sensors orientation.


Mass Air Flow Sensor Removed

Step 5 - After the removal of the sensor, use sensor safe carb cleaner to clean the contaminated sensor element.


Sensor Safe Carb Cleaner

AUTHOR


Written by
Co-Founder and CEO of 2CarPros.com
35 years in the automotive repair field, ASE Master Technician, Advanced Electrical and Mechanical Theory.


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Article first published (Updated 2014-02-21)