Thanks for the tip, what Volvo relay, can you give any more info?I think you need to run a few wires to the appropriate pins on the ecm plug and wire relays. Might not be worth the hassle. I used a volvo relay and a dual speed sensor and it works like a charm. I have yet to kick it into high the low moves a pile of air.
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Sounds like a good plan! any tips? did you have to tap the intake for one or is there a hole already?Why not use a temperature switch in the intake and have it trigger the relay? This is what I did on my hot air, when I had it.
I watch my temp gauge. I haven't got it hot enough to engage the high switch yet. These intrepid fans are great units.How do you know what temperature the switch is turning the relay on at? And what power is it sending?
I have read about anywhere from 10-15 hp.No measurable amount in my opinion. A clutch fan uses very little power when it isn't engaged. Im sure someone smarter than me has some exact figures. I think most people do it to improve cooling (stop and go traffic) and declutter the engine bay. Someone posted a while ago that the clutch fan is beneficial to our cars because it keeps constant air movement in our very hot engine compartment.
See told ya someone would have the figures.....i think on a good day that I dig real deep I might know small fraction of what jerryl does[emoji3]I have read about anywhere from 10-15 hp.
Agree though . . The HA needs all the cooling it can get so the constant fan makes a lot of sense in the summer, or anything above 45F ambient.