PWM for fans, will this work?

[Larry R]

Originally Posted by andrewb70

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

[waynieZ]

Great time for this question, thanks for posting.

[Jr]

Originally Posted by Larry R

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?

[Larry R]

Originally Posted by Jr

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

[Larry R]

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.

[carbuff]

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

[Larry R]

Originally Posted by carbuff

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

The part number for the PWM controller I used is: FOMOCO 6E53-8C609-AA

the Corvette P/N that I have for the controller is: 10377609

These two controllers look identical except for the printing on them.

I suggest reading through this series of posts, there is a wealth of info there. It is a bit long but in my opinion worth it. There is info there for the connector and related items.

https://lateral-g.net/forums/showthread.php4?t=40215

[Ketzer]

I read through quite a bit of the other thread but didn't see this asked...

Is this method of controlling the fans better than using a fan module from one of the wiring or radiator companies?

Jeff-