IAT Sensor
Elder User
Joined: Apr 2008
Posts: 727
Likes: 0
From: north shore, minnesota
Horrible gas mileage is your first symptom. The IAT will tell the engine it's -20 at all times, and the PCM will compensate for that by dumping fuel into the engine. You may or may not get a check engine light.
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PowerstrokeJunkie
1999 - 2003 7.3L Power Stroke Diesel
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Apr 30, 2007 11:56 PM
