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kerley

AIT Sensor

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What is an AIT Sensor and what is It's function. I am concerned about fuel mileage. Any help will be appreciated. Thank you, Kerley

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I have plugged an extension harness between the Cummins harness & IAT sensor. I have a IAT switch on my knee panel. I put it to the sensor (for grid heaters for starts in cold weather) or the resistor for override for best warm engine (lean burn) mpgs.

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IAT sensor tells the ECM/VP44 what the air density is like and temperature so the calculated timing can be adjusted accordingly...Oh Russ... Since the weather is so hot I back to the IAT for the time... I still reaching 23-24 MPG and IAT is 130-140*F typically running around here with 100-110*F temperatures outside.

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Actually, now, in summer, I start on the sensor, switch to the IAT Fooler to get better MPG at once. On a hot run, I switch back to the sensor. It's too complicated to see it what I'm doing improves summer mileage. It sure does the winter!

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