How do I know if I need to replace a mass air flow sensor?

It serves as a function to allow the computer to calculate the proper air and fuel mixture which should be close to 14.7 air to 1 part fuel. A mass air flow typically last between 80,000 miles to 150,000 miles. Proper maintenance of the mass air flow and cleaning it will help prolong its life. However, there are a few vehicle symptoms that will tell you when it is time to replace the air flow sensor.

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