Join Date: Sep 2008
Location: Fruitland Park,Florida
The air temp sensor helps the pcm fine tune the air/fuel mixture to adjust to different air temps entering engine. When air is cold, pcm will richen up the mixture. when air is warm or hot, pcm will lean the mixture.
While your car will run without the air temp sensor, it will run more efficiently with the sensor doing it's job. Unless the last owner tuned pcm to run in speed density mode all the time.