Mass Air Flow Sensor Service (MAF)
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
Removing Sensor Mounting Screws Step 4 - Next, carefully lift the sensor from the housing while taking note of the sensor's 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 Step 6 - The sensor element becomes contaminated due to the large amount of air which passes by the heated element while the engine is running.
Sensor Element Step 7 - Use carb cleaner to spray clean the sensor element. The cleaner quickly dries or compressed air can also facilitate the drying process.
Clean Element Step 8 - Once the sensor has been cleaned and allowed to dry, gently reinstall the sensor into the air tube housing.
Reinstalling Sensor Step 9 - After the sensor has been reinstalled, insert mounting screws and tighten.
Reinstalling Sensor Mounting Screws Step 10 - While rechecking sensor installation, insert the sensor electrical connector to complete the job.
Reinstalling Electrical Connector Once the service has been completed, start the engine and allow the computer to recalculate feedback data and make necessary adjustments. A mass air flow sensor service is an important part of an engine tune up and should be performed at regular intervals.
Helpful Information The automotive industry uses carburetor cleaner though carburetors are only featured on older cars. This aerosol cleaner is light, and cleans deposits most cleaners cannot. Sometimes shorted to "carb" cleaner this helpful chemical is a must for any repair garage.