Resolved Fan control on iMac early 2008?

hi!

bought 20" 2008 imac (2.66 c2d, 4gb ram) mere 200 bucks because had weird fan control issues. loaded lion onto , istat widget, reports this:



can see, cpu fan has gone ape feces/excrement/poo @ 3900 rpm, while hdd fan spinning @ 1200 rpm. , hdd @ 40 degrees celsius while cpu @ 28. not logical!

i'm contemplating if it's worth try fan control program , try limit fan manually - though i've read can mess smc. i'm not super capable of handling terminal , such , makes me think not greatest of ideas.

thoughts/recommendations? try hardware test , update post later results.

update: found solution on forums. unfortunately, i'll have manage fans semi-manually on.

1. download smcfancontrol , install.
2. download view attachment fan control.zip - folder of automator apps workflows tells smcfancontrol driver through terminal set new max fan speed. included 1200, 1500, 2500 , default 3900 rpm. click 1 when fans unbearable, , use smcfancontrol in menu bar report cpu temp, can run automator apps accordingly.

(need speed? take desired rpm times 4 , feed here: http://www.statman.info/conversions/hexadecimal.html, run automator , make workflow app paste in http://forums.macrumors.com/showpost.php?p=5266108&postcount=144 via utilities > run shell script. delete "cat". save new automator workflow name of rpm limit.)

 

have tried smc reset yet?

intel-based macs: resetting system management controller (smc) (apple support site)

if first link not work, apple support pages bit funky these last weeks:
intel-based macs: resetting system management controller (smc) (pdf apple support page resetting smc)​

 

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