A vehicle's mass airflow sensor, or MAF, is the component that measures the flow and density of the air flowing into the combustion chamber. It helps the car's computer regulate the ratio of air to fuel. It's a critical engine performance component, so if it fails or begins to fail, you should have it replaced immediately.
The most reliable early symptom of a failing or failed MAF is the illumination of the check engine light on the instrument panel. Many types of problems may cause this
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