"Philip Nasadowski" > wrote in message
...
I don't know what the air temp sensor even does
> besides make the EPA happy...
Induction air temperature sensing, along with throttle position sensor and
manifold Absolute Pressure sensor are used to compute the Mass Air Flow of
air entering the cylinder. This is a round-about way of not using a more
accurate (and much more expensive) Mass Airflow Sensor. Ultimately this
measures how much air is in the cylinder and then affects how much fuel to
inject for a correct burn.
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