EVOEvolved

iTrader: (1)

Can't wait to see the outcome. I find it very funny that so many people point to replacing parts when they have no evidence or engineering knowledge of how a system works. Franks seems like a good idea to check out.

lev_ct9a

can u pinpoint which wiring, my ix have the same problem here even i key on over night the fan kick in.

Boostindsm22

anyone ever figure out this issue?

jimleivas

Mine (a completely stock EVO VIII GSR 2004 model year 69000km on the odometer) came up with the same issue (radiator fan starts even just when you turn your ignition on and keeps on running continously or periodically during the drive) during the last few months.
I am going for a change of all liquids next month and I will have my mechanic check the source of the problem, so I will post again.
@frankmc proposal seems an out of the box solution, but anything is possible, so I will check that also.

ViciousLSD

iTrader: (2)

you need a new fan control module like this

https://www.ebay.com/itm/29578813654...3ABFBM8unEh8Ni

a used Calsonic (OE brand) might be better that these generic ones