Mazda 6 Mass Air Flow Sensor helps in maintaining smooth engine operation by informing the powertrain computer about the exact amount of air flowing to the engine so that it corresponds with the amount of fuel being delivered in real time. The early Mazda models applied a vane air flow design in which a spring-loaded flap pivoting with the incoming air engages a potentiometer, but it can restrict air intake flow, wear out over time or foul, leading to hesitation, stalling and warning lights. Subsequently, other cars applied a Mass Air Flow Sensor with the hot wire design, where a fine electrically heated wire hangs in the stream of air and the current required to maintain its temperature at a constant level is monitored; the colder the air, the higher the current the sensor needs to run, and thus the sensor can report flow rapidly without the mechanical force of a vane. Both versions of the Mass Air Flow Sensor supply constant data to the powertrain control module to tune injector on-time according to changes in altitude, temperature and throttle to prevent mixtures that run too rich or too lean. Sensing element contamination or leakage between the sensor and engine may cause erroneous readings; therefore, air ducts and vacuum lines should remain clean and unbroken. The aim of all Mazda Mass Air Flow Sensors is the same, independent of generation, to provide balanced combustion that enhances power, fuel economy and emissions control and gives Mazda drivers sharp response from their 6 sedan.
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