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fan doesnt run automatically

when i use my imac then fan never runs atuomaticaly even though the top is burning but it works with smcfan control how do i make it run automaticaly?

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Do an SMC reset. Unplug the power cord and let it sit for a few minutes. How can you tell that the fans are running at all? These machines idle very quiet. Install the iStat Pro widget to monitor fan speeds and temps.

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i already have stat pro its only on 1199 even when its burning hot

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Try smc fancotrol (found easily via google) to ramp up the base speed of the fans. Something seems to be fishy with either the sensors or the smc itself on your machine. Unfortunately i can't tell more without actually seeing the computer. Doublecheck all wiring on the logicboard.

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heres info.

  • try using a different fan

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