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Home >> Ford >> 1994 >> Probe Base, Standard >> Repair and Diagnosis >> External Pages >> Different car >> Section 91 (Engine Controls - Theory & Operation - EEC-IV 3.8L) >> Computerized Engine Controls >> Input Devices >> Mass Airflow (MAF) Sensor
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Mass Airflow (MAF) Sensor

WARNING: This page is about a different car, the 1994 Mercury Sable, 1994 Mercury Cougar, 1994 Lincoln Continental, 1994 Ford Thunderbird, and 1994 Ford Taurus. However, it is still accessible from the selected car via links, so may be relevant.

MAF sensor measures flow of air entering the engine. This measurement of airflow is proportional to engine load (throttle opening). The sensing element (hot wire) is a thin platinum wire wound on a ceramic bobbin and coated with glass. The hot wire is maintained at 392°F (200°C) hotter than the cold wire located downstream of hot wire. As air passes through airflow sensor, the air temperature is measured as it passes over the cold wire sensor. The PCM uses this information to calculate the required injector pulse width in order to provide desired air/fuel ratio.

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