Run electric fans all the time?

5.7 hemi said

Derale makes a really good PWM controller also check out Rainbow Products.


Having the fans run constantly is dumb, puts undue load on the alternator and when going about 35mph, fan(s) aren’t doing much.

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I'll look at Rainbow,thanks. There are decidedly mixed reviews on the Derale too...

It would be "dumb" to have them running at full speed all the time, but that is not what I'm talking about. 8-10 amps for low speed is not much of a load. And as I mentioned in my original post, I want to turn them to lower the air resistance, and keep the coolant temps more constant.