6.0 engine
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New User
Joined: Jul 2010
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From: al.
6.0 engine
i have a 04 f 250 i was wandering if i could make the cooling fan run more, it seem to not run like it should when pulling a hill. just wanted to know if there is a kit to make the fan run more. thanks
Elder User
Joined: Jul 2009
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From: Smiths Grove, KY
If everything is working properly the factory set-up should keep your truck plenty cool. If the truck is running hot you should find out the root cause. Follows are a couple of recent threads that will provide some additional details on the operation of the fan and why it not a good idea to modify the controls. As 69cj explained there is much more to the operation of the fan than simply turning it on and off based on a thermostat.
https://www.ford-trucks.com/forums/9...oling-fan.html
https://www.ford-trucks.com/forums/9...de-switch.html
https://www.ford-trucks.com/forums/9...oling-fan.html
https://www.ford-trucks.com/forums/9...de-switch.html
Post Fiend
Joined: Oct 2005
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From: Plano TX and Brentwood TN
I don't know what you exact situation is, but just based only on what you have typed, there might not be any reason for it to come on at all.
Posting Guru
Joined: Jun 2005
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From: Amarillo, TX
I guess a question I have is what are your H2o temps? My fan will not come on unitl my gauge reads 212ish
Elder User
Joined: Jul 2009
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From: Smiths Grove, KY
Keep in mind that engine temperature isn't the only parameter used by the PCM to determine fan operation. Most people see some variation in engine temperature vs fan operation.
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Posting Guru
Joined: Jun 2005
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From: Amarillo, TX
What else does it use? OT or tranny temp? Or something?
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Elder User
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From: Smiths Grove, KY
The PCM uses ECT, transmission fluid temp, and intake air temp parameters to determine fan operation. A pulse width modulated signal is then output to a fluid port on the fan drive to regulate speed. The fan also has a hall effect sensor used to provide speed feedback to the PCM. As 69cj said before the days of simple fan operation are in our rear view mirror.
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From: al.
thanks guys it just started running hot when the temps got hot here in AL. some tell me that it should kick on and u should hear it roaring i have not heard it, it my son truck i am trying to see what wrong! i am in process of replacing egr cooler with a delete kit & took oil cooler off & clean it good not back together yet it just get hot when climing a long hill & thanks for the welcome & info.
Posting Guru
Joined: Apr 2008
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From: Albemarle, NC
thanks guys it just started running hot when the temps got hot here in AL. some tell me that it should kick on and u should hear it roaring i have not heard it, it my son truck i am trying to see what wrong! i am in process of replacing egr cooler with a delete kit & took oil cooler off & clean it good not back together yet it just get hot when climing a long hill & thanks for the welcome & info.
welcome! If your that deep into the truck, it would be silly to not replace the oil cooler IMO. They are "relativley" inexpensive and can save you headache down the road.
Post Fiend
Joined: Oct 2002
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on our 3rd Ex and 2nd 6oh, would guess we have heard the fan come on just a handful of times since the 1st 2002.... every time it scared the stuffings out of us 
IIRC, it was usually sitting at a light in the Texus heat, with cars all around, and both ac's blasting... guess I play the audio books, radio, etc. loud enough when moving that we don't hear it !
Maybe having all the exhaust from others around it makes it hot enough to blast on for a few seconds and then it goes off just as quickly... and never stays on once we start moving...
IIRC, it was usually sitting at a light in the Texus heat, with cars all around, and both ac's blasting... guess I play the audio books, radio, etc. loud enough when moving that we don't hear it !
Maybe having all the exhaust from others around it makes it hot enough to blast on for a few seconds and then it goes off just as quickly... and never stays on once we start moving...
Hotshot
Joined: Jul 2005
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From: Middle Tn.
I agree 100% about changing the oil cooler. They cannot be cleaned internally which is where the problem lies. If the truck is a late 04 build you might look into updating the stc fitting in the hpop system while there also.
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Joined: Jan 2010
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I thought the stc fitting in the hpop system was not a problem until 2005?