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What is a IAT sensor?

In: Ford Expedition XLT [Edit categories]

Answer:

Intake Air Temperature Sensor

Air intake temperature is used to correct fuel quantity (pulse width) since air temperature effects air density. (colder air is much more dense) Approximately 70°F is generally used for 0 correction, temperatures above will result in less fuel to compensate for the lower air density, and conversely temperatures below 70° will result in steadily richer (by volume) mixtures. Bad readings will effect ECM attempts to keep the air to fuel ratio proportional.

First answer by AL52269. Last edit by AL52269. Contributor trust: 299 [recommend contributor ]. Question popularity: 1 [recommend question].

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Relevant answers:

What does a IAT sensor do?
An "IAT" sensor tell the computer on a vehicle the air temperature inside the intake. The computer then tells how much gas flow the investors need to dispense for proper air-fuel mixture.
What is an iat sensor?
Intake-air-temperature sensor, located between the maf sensor and the air filter.
Where is the IAT sensor at?
The IAT sensor measures the temperature of the intake nmanifold. The ECM uses this sensor reading to set injection timing and adjust the air-fuel ratio. If the fuel mileage and power output of you...
Where is the iat sensor?
it should be in the air intake box, i beleave on the right side of the engine compartment, or it may be before the box (the bit with the air filter) normally after or on the inside of the the...
Is the IAT sensor and MAF sensor the same?
no iat measures intake air temp maf measures amount of air (volume) so pcm knows how much fuel to keep proper fuel mixture