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Intake Air Temperature (IAT) 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.

IAT sensor inputs air temperature to the PCM. The IAT sensor changes resistance in response to air temperature. The ECT sensor resistance decreases as air temperature increases.