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Discussion Starter · #1 ·
Hi all
I am trying to figure out when the fan start to work. I do not see any consistency... sometimes when idling it will start to work even with low temperature, and while driving It start only at ~206F.

Can someone please explain what is the fan algorithm ?
I own a 2008 2.4 auto Solstice with Hahn stage 2. I guess the trifecta tune I have changes the fan settings but I am interested in the default values of a 2.4 solstice.

thanks
 

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It will turn on when you have the A/C on.

If A/C is off, it will turn on when the coolant reaches a set temp. GXP (not NA) will increase fan speed as/if temps climb above the turn-on temp.
 
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