AC heats up AIT - Diesel Forum - TheDieselStop.com
6.0L Power Stroke Engine and Drivetrain Discussion of the 6.0L Power Stroke diesel engine and drivetrain in the 2003-Up Super Duties and Excursions. No gas engine discussion allowed except on transmissions and drivetrain that pertain to all models. Please confine discussion of topics in this forum to those items that are specific to the 6.0L Power Stroke engine.

 
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post #1 of 2 (permalink) Old 08-13-2019, 12:11 PM Thread Starter
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AC heats up AIT

So I started hearing my fan getting locked in when driving around town in pretty mild weather and raining sometime, but I couldnít figure out why it was doing that given that my ECT was between 188 and 195 and my EOT was between 193 and 198 the whole time.. I pulled up the AIT on my X4 and thatís when I saw it was up over 112 which would cause the fan to engage.. this just started happening at the end of a roadtrip the other day, so Iím a little confused as to what could have gone wrong with the AC? When I donít have the AC on, it never locks in and runs fine, which is what I am looking to get as the end result. When I start the truck with the AC on, it will blow warm air to start, but then cool off eventually.. pretty normal in my opinion, but I figured I would offer as many details as possible. The temps that I am running the truck in vary from 70 in the morning to mid to upper 80s in the afternoon in Illinois.
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post #2 of 2 (permalink) Old 08-14-2019, 06:51 AM
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Sounds like the sensor is bad if the outside temps are only 80 degrees max. If I understand you correctly, you're saying that you think the AC compressor is generating the heat that the sensor is reading and causing the fan to stay on?
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  Diesel Forum - TheDieselStop.com > 1999-2007 Ford Super Duties > 6.0L Power Stroke Engine and Drivetrain

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