dumb question.....where is the IAT sensor? i know it's around the intake/throttle body somewhere, but i'm seeing 2 little black boxes/plugs w/ wires coming out...one near the end of the intake and the other on the throttle body. help please!

 

I believe it is integral to the MAF.

 

THe intake air temp sensor is located in the air tube elbow before the air cleaner. Part number F57Z 12A697-A.

Barry

03 F-150 reg cab 4x4

( Ford parts man )

 

i'm still not sure which one is the sensor....this should make it easier, does it have 2 or 3 wires coming out of it? one has 1 yellow/1 blue and the other has 2 yellow/1 green.

 

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The IAT sensor is simply a thermistor and has 2 wires.

 

its a 4.6 v8

 

Here's a illustration of what joshmac is referring to -

 

Is there an "up" direction for the MAS? Or can in go any direction?

 

If you look at the diagram, it only goes in one way.