PWM cooling fan(s) control using ECM

[andrewb70]

Originally Posted by dontlifttoshift

...

They both appear to take the same Yazaki connector and they are available as a kit on ebay pretty reasonably.

Donny,

As I understand it, that big Yazaki is a USCAR standard, which explains why they are readily available. I've seen them on many makes and models.

Otherwise, sourcing Yazaki connectors and terminals is nearly impossible in the US. I went down this rabbit hole trying to source new connectors for my Toyota EPAS science project.

Andrew

[jmac]

Originally Posted by andrewb70

That is my understanding. I do not have first hand experience with them, but this thread has all the relevant information.

Although, if you already have a C6 controller and a good fan, I see no reason to change.

Andrew

Thanks, I do not have the C6 controller yet, plan on using the Holley Dominator like you, just wired directly to the fan.

[eville]

Originally Posted by dontlifttoshift

Yes, the C7 fan and the Spal brushless have the controller built in. You still need to send it a signal though and I do not know if they require the same signal.

They both appear to take the same Yazaki connector and they are available as a kit on ebay pretty reasonably.

Hmmm, I'd been planning to run the C6style controller through my Holley ECU on my dual SPAL setup by Ron Davis but I wonder if SPAL makes a brushless that would bolt in place of the older style fans... would be much cleaner.

[andrewb70]

Originally Posted by eville

Hmmm, I'd been planning to run the C6style controller through my Holley ECU on my dual SPAL setup by Ron Davis but I wonder if SPAL makes a brushless that would bolt in place of the older style fans... would be much cleaner.

From what has been posted earlier in this thread, I see no reason why the Dominator can't work with the brushless fans. As far as brushless fans that take the place of the older dual fans, you will have to dig deep into the Spal catalog.

The trend that I am seeing with OEM applications is toward one large 600 or 800watt fan (the C6 fan is 400watt).

Andrew

[eville]

Originally Posted by andrewb70

From what has been posted earlier in this thread, I see no reason why the Dominator can't work with the brushless fans. As far as brushless fans that take the place of the older dual fans, you will have to dig deep into the Spal catalog.

The trend that I am seeing with OEM applications is toward one large 600 or 800watt fan (the C6 fan is 400watt).

Andrew

Yeah, I'm only seeing 12 and 14" fans. I'll give Ron Davis a call.

[simon455]

I will be experimenting with a Chrysler hellcat brushless
Fan and e67 gmpp controller. I really hope it will actually work as I got the fan already mounted in my 68 lsa camaro. The hellcat brushless fan is looking for this signal: 12V PWM active LOW, 100hz. 10%DC is OFF, 90%DC is full on.
Don’t have acces yet to hp tuner or efi live to unable the pwm signal from discrete in my e67 controller. And from what I understand, the frequency can be altered with a efi live or hp. Is there anymore guys on here that got the brushless fans to work??
The hellcat fan is fairly inexpensive from dodge and it’s proven to work well without issues in hellcat family vehicles.

[AJG87]

First post on the forum, and forgive me if I have missed this after reading through the entirety of the thread, but is it possible to still utilize the C6 PWM controller without an a/c pressure input? I do not have an a/c system installed on the vehicle.

[andrewb70]

Yes.

Andrew

[MtotheIKEo]

This thread has been a wealth of information so thanks to everyone for contributing.

I have a Terminator X Max ECU, C6 fan, and Dorman 902-310 relay (mopar relay). I have tried a few different frequencies and have settled on 128, but there is a pretty noisy buzz from the fan. At 50% duty the fan and buzz noises are about equal, but below 50% the buzz is a bit annoying. Does the C6 relay have the same buzz? Anyone think it’s the mix of the Dorman relay and the C6 fan creating the buzz?

[andrewb70]

The C6 fan controller makes zero noise. I have never used the Dodge controller.

Andrew