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Intake Temp

Old Jul 19, 2017 | 10:57 AM
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Intake Temp

Where is intake temp measured on our trucks? My reading on Torque Pro is within 5-10 degrees of ambient depending on driving conditions. Just wondering what's "normal" and where it is measured? I know there is a sensor in the intake manifold but not sure if that is where my reading comes from.
 
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Old Jul 19, 2017 | 11:08 AM
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The one in the intake is the IA2. That's is the one the PCM uses to see flow from the eGR cooler.
 
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Old Jul 19, 2017 | 11:13 AM
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Forgot to answer the question but at the IA2 I will see 50-65* above the IA1 sensor. I am not deleted.
 
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Old Jul 19, 2017 | 01:33 PM
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IAT is part of the MAF sensor on the intake tube, IAT2 is in the manifold.

IAT should be fairly close to ambient, the book says that at 98*f IAT that IAT2 should be 113*f, but that might not really be accurate based ambient temp and how much boost pressure you're running. I guess they have to put SOMETHING in the book, doesn't mean it's useful.
 
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