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Old 02-17-2013, 04:00 PM
mikels mikels is offline
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Quote:
Originally Posted by carbuff View Post
Question of ignorance here, looking for a little education...

Can you use a PWM fan controller on any cooling fan, or does the fan need to be designed to handle the fast on/off switch of the PWM? In other words, would you burn-out a normal fan if using a PWM controller on it?

I haven't looked, but I'm now wondering if anyone makes an aftermarket PWM fan controller. I think the idea here is interesting, but at least from the GM implementation, it's not just a simple aftermarket conversion...
The high frequency signal goes to the control module - not the fan motor directly. This causes output voltage of controller to be reduced (proportional to PWM signal). So long as fan motor can run at lower voltage levels, should not be an issue.

There are a couple aftermarket PWM fan controllers but I have no experience with them.

Dave

Last edited by mikels; 02-17-2013 at 06:49 PM.
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