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What does the ambient air temperature sensor do on a 2000 Ford Taurus and where is it located?

Function: The ambient air temperature sensor on a 2000 Ford Taurus measures the outside air temperature and sends this information to the engine control unit (ECU). The ECU uses this information to adjust the air-fuel mixture and engine timing, which helps to optimize engine performance and fuel economy.

Location: The ambient air temperature sensor on a 2000 Ford Taurus is located in the front bumper, behind the left headlight. It is a small, black sensor that is about the size of a quarter.