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• 20:29, 6 July 2026 Cliff talk contribs created page Manifold air temperature sensor (Created page with "'''Manifold air temperature sensor''' refers to the air-temperature sensor used by the Pontiac Fiero ECM. The manifold air temperature sensor tells the ECM the temperature of the incoming air. The ECM uses this information for fuel-mixture calculations, warm-up behavior, drivability control, and diagnostic trouble code decisions. == Overview == The manifold air temperature sensor is often abbreviated as MAT sensor. Air temperature affects air density. Cooler...")