Had my truck at the dealer for some end of warranty work was getting a CEL light with DTC for the map sensor also got a CEL for DTC under boost dealer also says he had a open circuit for the clutch fan and that I need to replace the clutch fan . This weekend I decided to do a coolant flush and change the thermostat because the truck was running a little cool when I had the truck running outside with VC9 and the old thermostat and a peice of cardboard covering the rad I was getting coolant temps of around 169 -170 Fan rpm of 400-500 the fan would come off and on up to about 1500rpm temperarly at around 170 After I drained it and changed the thermostat I was getting Temps of 196 - 198 the fan had a RPM of around 400-500 The temp stayed consistant around 198 196 and the fan never came on over 500 rpm range

Question is what is a normal temp for the fan to come on and is there a way to test to see if it is doing what it should or is the dealer making me replace stuff for nothing

 

the fan comes on and off for lot of reasons. not one certin thing will make it happen.

to test the fan active command fanvar# to 100%, incress engine rpm to 2500 and moniter fanss. the fanss pid should be greater then 2800rpm.

 

How do you test the fan active command fanvar or what do you use to test it I was using AE to moniter Fan speed rpm and coolant temps but the fan never came over 1800 rpms with the truck running at 2000 rpm

 

I use an IDS i have no idea what you and cant do with AE

 

There should be an Activation frame on AE. If it's not there, right click on something, either the menu bar, the toobar, or the main page, I can't remember, and you should see Activation in the menu.

In the activation frame, you can set the engine speed and the fan on percentage. As you adjust the fan percentage you should see the fan speed increase and decrease.

EDIT: Sorry, it's "Actuation". Not activation.

 

thanks David I just treid that I can see the actuation box but it doesnt give me any option to actuat anything I am thinking it s because the truck is a 350 and it doesnt have to be OBD compliant Although I was able to use KOER system testing wich turns on the fan in part of it s test

 

Make sure you've updated to the latest version of AE. When you connect, choose Ford, your year, then scroll down and find 6.0L Powerstroke and select Enhanced CAN. In the Actuation pane, there is a check box and a value. Check the box and select the value and the engine should respond.

I've done this with mine, it should work with yours.

 

what ver do you have? I still have ver 7.3 so that may be why because In the Actuation pane, there is no check box and value the box is completly empty When looking at the scan tool user guide I can see what you mean but my software doesnt give me them options

 

Ya I have done this too. It is there and it does work.

 

I have version 9.0.3. You should upgrade. Also, it is somewhat confusing, that in the vehicle selection at the beginning you don't pick F-350, you scroll down and pick 6.0L Powerstroke.

 

You can download the latest version here...

Downloads

But you will need to go to the online activation link, fill out the form and get a new activation code.

 

Ya I have the vechicle selection right its ford and 6.0 not f350 I think for me to update I think i will have to get the newly updated connector also

 

My ver is over a year old so i am going to have to subscribe for the year of updates