Engine Fans running constantly - Ford Powerstroke Diesel Forum
User Tag List

LinkBack Thread Tools Display Modes
post #1 of 2 Old 08-13-2013, 10:04 AM Thread Starter
Powerstroke.org Rookie
Join Date: Aug 2013
Posts: 1
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
Thanks: 0
Thanked 0 Times in 0 Posts
Feedback Score: 0 reviews
Engine Fans running constantly

Have an 2006 350 with 6.0.
Truck was fine. Sat without running for 10 days.
Now the fans run all the time as if the engine is hot. I dont mean the fans turn I mean they roar when your driving like they do when they kick in on high engine temps. Doesnt matter what the engine temp is they run pulling out the driveway when truck is cold and they stay on. I have not driven the truck for a longtime in this condition so I dont know what will happen if I get it up to high temp.
No codes shown through SCT device.
There is no tune on the truck.

I have been trying to do most repairs on this truck myself and learning as I go.
Need some diagnostic ideas.

Thanks in advance.
ccrider11 is offline  
Sponsored Links
post #2 of 2 Old 08-13-2013, 10:45 AM
Compression Ignition Addict
Join Date: Dec 2008
Location: port arthur texas
Posts: 4,217
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
Thanks: 1
Thanked 62 Times in 58 Posts
Feedback Score: 0 reviews
Check for free air flow thru the a/c condensor; CAC and radiator. Check all temps oil;coolant;transmission and a/c condensor temps as well as iat temps.

Check fan wireing for chafes/shorts Fan speed and duration of run time is determined by the pcm and what it sees from it's sensors.

A field test you may try is run some water across the a/c condensor if the fan cuts off your condensor is getting too hot keeping the fan engaged.

Lord I shall lead them to the water but I will not try to make them drink
dannyboy950 is offline  
Sponsored Links

Quick Reply

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:
Please enter a password for your user account. Note that passwords are case-sensitive.


Confirm Password:
Email Address
Please enter a valid email address for yourself.

Email Address:


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
Show Printable Version Show Printable Version
Email this Page Email this Page
Display Modes
Linear Mode Linear Mode

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

For the best viewing experience please update your browser to Google Chrome