fan clutch question - Ford Powerstroke Diesel Forum
General 6.7 Discussion General 6.7 Discussion

Powerstroke.org is the premier Diesel Truck Forum on the internet. Registered Users do not see the above ads.
Reply
 
LinkBack Thread Tools Display Modes
  #1  
Old 08-18-2013, 06:38 AM
Powerstroke.org Rookie
 

Join Date: Jun 2013
Posts: 9
Thanks: 0
Thanked 0 Times in 0 Posts
Feedback Score: 0 reviews
fan clutch question

Hi, very new to the thread and my 09 F350 -- which is great!

I have a 3600lb camper I haul and the last couple weekends I have been going to the mountains. When I am climbing the hill from 1,000 feet to 9,000 feet, I hear this loud winding up sounds - which I know now is the fan clutch. My questions: 1) how fast should I be going up these steep hills - I go about 45 or so now, and 2) is it normal for the fan clutch to be very loud - and when will I know it's failing.

I really appreciate the insight and have a great Weekend!
Reply With Quote Quick reply to this message
Sponsored Links
Advertisement
 
  #2  
Old 08-19-2013, 05:35 AM
Compression Ignition Addict
 

Join Date: Apr 2010
Location: Las Vegas Baby!!
Posts: 298
Thanks: 2
Thanked 1 Time in 1 Post
Feedback Score: 0 reviews
You have posted in the 6.7 forum but your question applies to any diesel pick-up so here is your answer. (IMO)

The fan clutches are temperature controlled. When the air flowing thru the radiator is coming out too warm, the fan will sense this and "lock up" which pulls more air thru the radiator to better lower coolant temp. This is a normal cycle and tells you your truck is doing exactly what it is supposed to be doing.

You will not normally hear the fan clutch when driving level or unloaded. The air flow thru the radiator at speed will be adequate to cool the coolant and the fan clutch is not needed to lock up.

Once you begin climbing a hill some things change. First is the engine is putting out a lot more power. Often, it is putting out maximum power (full throttle). Higher power output means higher cooling requirements. Secondly, the ground speed drops which lowers the amount of air passing thru the radiator naturally.

With lower air flow and higher cooling demand, the fan clutch engages to pull more air and this is the sound you hear. Just the way Ford, Dodge and GM designed it to do.

With a F350 diesel and only 3600 lb. trailer I would say you could drive any speed that is safe for conditions.

You will know when your fan clutch has malfunctioned when the truck is overheating. As long as you hear the clutch cycling, and the temps are good, drive it any way you feel is safe. Safety first when towing loads!!!
Reply With Quote Quick reply to this message
Sponsored Links
Advertisement
 
Reply

Quick Reply
Message:
Options

Register Now

In order to be able to post messages on the Ford Powerstroke Diesel Forum forums, you must first register.
Please enter your desired user name, your email address and other required details in the form below.
User Name:
Password
Please enter a password for your user account. Note that passwords are case-sensitive.
Password:
Confirm Password:
Email Address
Please enter a valid email address for yourself.
Email Address:

Log-in

Human Verification

In order to verify that you are a human and not a spam bot, please enter the answer into the following box below based on the instructions contained in the graphic.



Thread Tools
Display Modes

Posting Rules
You may post new threads
You may post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are On
Pingbacks are On
Refbacks are On



All times are GMT -8. The time now is 01:12 PM.


Powered by vBulletin® Copyright ©2000 - 2014, Jelsoft Enterprises Ltd.
Search Engine Optimization by vBSEO 3.6.1
Garage Plus, Vendor Tools vBulletin Plugins by Drive Thru Online, Inc.

vB.Sponsors