...

Go Back   Lateral-g Forums > Technical Discussions > Cooling: Radiators/Fans/Controllers
User Name
Password



Reply
 
Thread Tools Display Modes
  #1  
Old 06-24-2017, 02:47 PM
Larry R's Avatar
Larry R Larry R is offline
Lateral-g Supporting Member
 
Join Date: Apr 2017
Location: Dallas, TX
Posts: 23
Thanks: 0
Thanked 1 Time in 1 Post
Default PWM for fans, will this work?

I am wanting to power and control my two Spal fans from my Holley HP ECU via a PWM controller (the Ford Fusion version) and have come up with a plan. I know this has been discussed at length in another post bout I would like to get some opinions as to whether or not this will work. Pictured below is a schematic I have hand drawn and a photo of what I have set up in the input/output of the ECU.
Attached Images
  
Reply With Quote
  #2  
Old 06-26-2017, 10:06 PM
andrewb70's Avatar
andrewb70 andrewb70 is offline
Lateral-g Supporting Vendor
 
Join Date: Jul 2005
Posts: 851
Thanks: 209
Thanked 441 Times in 200 Posts
Default

I don't see why not. If I had AC I would use CTS and AC pressure as well.

Andrew
Reply With Quote
  #3  
Old 06-27-2017, 01:03 PM
Larry R's Avatar
Larry R Larry R is offline
Lateral-g Supporting Member
 
Join Date: Apr 2017
Location: Dallas, TX
Posts: 23
Thanks: 0
Thanked 1 Time in 1 Post
Default

Quote:
Originally Posted by andrewb70 View Post
I don't see why not. If I had AC I would use CTS and AC pressure as well.

Andrew
Thank you. Larry
Reply With Quote
  #4  
Old 06-29-2017, 09:57 AM
andrewb70's Avatar
andrewb70 andrewb70 is offline
Lateral-g Supporting Vendor
 
Join Date: Jul 2005
Posts: 851
Thanks: 209
Thanked 441 Times in 200 Posts
Default

Larry,

I just looked at the schematic again, and I would add a 40amp breaker between the battery 12v+ and the fan controller.

Andrew
Reply With Quote
  #5  
Old 06-30-2017, 05:45 PM
Larry R's Avatar
Larry R Larry R is offline
Lateral-g Supporting Member
 
Join Date: Apr 2017
Location: Dallas, TX
Posts: 23
Thanks: 0
Thanked 1 Time in 1 Post
Default

Quote:
Originally Posted by andrewb70 View Post
Larry,

I just looked at the schematic again, and I would add a 40amp breaker between the battery 12v+ and the fan controller.

Andrew
Ok, I will. Thanks for your help. Larry
Reply With Quote
  #6  
Old 06-30-2017, 09:07 PM
waynieZ's Avatar
waynieZ waynieZ is offline
Lateral-g Supporting Member
 
Join Date: Oct 2006
Location: Ma
Posts: 8,424
Thanks: 908
Thanked 336 Times in 229 Posts
Default

Great time for this question, thanks for posting.
__________________
_Wayne________

___________________________________
https://lateral-g.net/forums/show...ghlight=FNQUIK
Reply With Quote
  #7  
Old 07-01-2017, 02:51 PM
Jr's Avatar
Jr Jr is offline
Senior Member
 
Join Date: Sep 2005
Location: so cal
Posts: 1,737
Thanks: 0
Thanked 0 Times in 0 Posts
Default

Quote:
Originally Posted by Larry R View Post
Ok, I will. Thanks for your help. Larry
Why do you prefer the ford pwm over the Chevy? Is one that much better than the other?
Reply With Quote
  #8  
Old 07-01-2017, 04:00 PM
Larry R's Avatar
Larry R Larry R is offline
Lateral-g Supporting Member
 
Join Date: Apr 2017
Location: Dallas, TX
Posts: 23
Thanks: 0
Thanked 1 Time in 1 Post
Default

Quote:
Originally Posted by Jr View Post
Why do you prefer the ford pwm over the Chevy? Is one that much better than the other?
To the best of my knowledge, they are identical. I avoided the "Corvette tax" by purchasing my Ford Fusion units new off eBay, so my motive in getting the Ford modules was cost.

That said, when I hooked mine up today, including the 40 amp breaker, as soon as I connected the ground wire to the PWM, the fans came on. This is with the cold engine not running and the key off. I cannot yet say it is the fault of the PWM module or a wiring error, more research is necessary.

I hope Andrewb70 will step in here. Larry
Reply With Quote
  #9  
Old 07-01-2017, 06:47 PM
Larry R's Avatar
Larry R Larry R is offline
Lateral-g Supporting Member
 
Join Date: Apr 2017
Location: Dallas, TX
Posts: 23
Thanks: 0
Thanked 1 Time in 1 Post
Default

UPDATE!!! It works! After I fixed the wires I had inadvertently crossed, it works as advertised. My schematic is good. The fans came on as I had set them up in the input/output section of the ECU. I ran the A/C and it still maintained the prescribed temperature. My thanks to all who offered help and encouragement to me in this project. I will take it our for a freeway cruise soon to give it a real test.
Reply With Quote
  #10  
Old 07-01-2017, 09:50 PM
carbuff's Avatar
carbuff carbuff is offline
Senior Member
 
Join Date: Dec 2004
Location: Austin, Tx
Posts: 1,306
Thanks: 6
Thanked 19 Times in 13 Posts
Default

For anyone that may want to do this in the future, do you have the part number for the controller you used?
Reply With Quote
Reply

Thread Tools
Display Modes

Posting Rules
You may not post new threads
You may not 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

Forum Jump


All times are GMT -5. The time now is 09:12 AM.


Powered by vBulletin® Version 3.8.11
Copyright ©2000 - 2024, vBulletin Solutions Inc.
Copyright Lateral-g.net