Is it normal for the engine Fan to come right after a cold start ? It stays on for a few minutes and stops.. Don't see the logic in that..

 

mine does the same thing, others have said so too.

 

Same here and I hate it. I never heard the fan in my last three trucks. Some times it willstay on for 5miles or more. If I really get on it, it will stop.

 

Everyone that has posted has a newer super duty, as do I. Mine is a 2015 and I wondered as well why the fan makes so much noise when the motor is cold? The part I also don’t understand is the fans in our trucks is a mechanical fan, so how can it make more noise at any other given time since it just runs off the belt unlike an electric fan most new vehicles have.

 

It has a clutch that let's it free wheel when it isn't needed, why they lock it up on cold starts is a mystery. If you pull it hard on a hot day the clutch will engage and you will really hear it until the temp comes down.

Denny

 

The clutch is electrically controlled.

 

Could be testing the fan by running at startup. Would be nice if you found out your fan doesn't work a couple miles from home rather than climbing the largest hill in the area? . The semi's I used to drive would kick the fan on in the morning as well so I never really thought much of it. They are air operated clutches though.

 

Check out this thread if you are interested in a clutch fan replacement: https://www.ford-trucks.com/forums/1...onversion.html

 

I was told it was viscosity that makes that happen. Not sure it's the same for the electric clutch, but from what I can read it is: Fan Clutch Diagnosis - Engine Cooling System