Genuine Acura MDX Mass Air Flow Sensor

The Acura MDX Mass Air Flow Sensor is a sensor that continuously monitors incoming air in order for the engine computer to mix fuel precisely to provide smooth power and efficiency. By relaying exact airflow data to the PCM, this Mass Air Flow Sensor allows fuel injectors to deliver the proper pulse width, avoiding rich or lean conditions that lead to hesitation and stalling and a glowing check engine light. Early Acura MDX models were based on a vane meter style Mass Air Flow Sensor with a spring-loaded flap and potentiometer, which could be restrictive to flow and could wear or stick if dirt accumulated. Later teams changed the Acura MDX SUV to a hot wire Mass Air Flow Sensor, which keeps a thin wire heated in the stream and measures current changes, providing faster response time, less flow resistance and better adjustment to temperature and pressure changes, but does need to have clean air to prevent contamination. Regardless of the version, all Acura MDX employ airtight intake plumbing to prevent the potential for unmeasured air to sneak past the Mass Air Flow Sensor in order to throw off the delicate 14.7 to 1 ratio essential for peak combustion.

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