A mass air flow sensor (MAF) is used to measure the air flow that enters the engine at any given RPM range and is monitored by the vehicle's computer to make adjustments to the fuel delivery and ignition timing.
When the MAF is in operation intake air from the engine passes through it which has impurities which are not removed by the air filter such as heavy air practical's. Over time these impurities cause a condition called "coking" which develops on the sensor "hotwire" which inhibits the sensor's ability to send accurate feedback data to the computer which can cause low power, low idle, hesitation and even stalling.
To have a cleaning service performed at a local repair garage or dealer the cost can range from $80.00 and $240.00 depending on manufacturer and the sensor location. If you were to do the service yourself using simple tools a shop towel and a can of MAF cleaner from your local parts store it would run about $15.00 which is all that is needed. The job usually takes about 20 minutes. (Note: do not use carburetor cleaner or any other cleaner due to the residue that is left behind).
Open the vehicles hood
to locate the engine's mass air flow sensor which is located either at the air filter
housing or somewhere in the intake tube.
Please watch this video of the job being done, then continue down the guide to glean additional helpful information.
Reinsert the sensor electrical connector to complete the job. Start the engine
and allow the computer to recalculate the new feedback data and make necessary adjustments.
This service should be performed within an
engine tune up.
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