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Old 06-05-2019, 09:31 AM   #1
Long Schlong Longhammer
CorvallisBMW's Avatar
Join Date: Feb 2005
Location: Portland, OR
Posts: 13,009
Anyone running a PWM controller for their cooling fan?

I've been running an 80/88C fan switch for years now but it is far from reliable. There's also a huge inrush current when my 16" pusher jumps from low to high speed and the 10" puller comes on also.

A far more elegant solution is a PWM (pulse width modulation) controller. Spal used to make one but it seems to be discontinued. There are controllers out there from Jegs, Flex-a-lite, Derale, Hayden, etc. Does anyone have any of these? I see a lot of mixed reviews online for each manufacturer so I'm looking for personal experiences.
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Old 06-08-2019, 04:56 AM   #2
Join Date: Oct 2017
Location: Charlottesville, VA
Posts: 45
No personal experience, but I've heard good things about autocoolguy
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