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6.0L Power Stroke Diesel 2003 - 2007 F250, F350 pickup and F350+ Cab Chassis, 2003 - 2005 Excursion and 2003 - 2009 van

Low EOT and ECT

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Old Feb 7, 2018 | 08:37 AM
  #16  
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There is hysteresis of the viscous fluid in the fan clutch so there always is some rotation. When the fan truly engages you hear a roar due to its engagement. But going down the road with a 1600 engine rpm it’s not unusual to see a few hundred fan rpm. I’m not a person who can talk much about fan engagement as I’ve only had the fan kick in once since 2003.
 
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Old Feb 10, 2018 | 06:34 PM
  #17  
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I had a chance today to replace the fan clutch. While in there I removed the thermostat and tested it. It was fine. However I did replace it, just since I had it apart.
Seems to be ok. EOT came up to 170 and I did hear the fan clutch click. Let it run for a while and it came up to 184 EOT 183 ECT and 184 TFT. 25 IPR 550ish ICP

So I think that is fine.
Now if I can only figure out the stalling issue when cold,haha
 
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Old Feb 10, 2018 | 06:40 PM
  #18  
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Well, thanks for reporting back
 
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