im having some difficulties with my imac early 2006 core duo. its running quite hot even when idling, and with little usage it will surge up. idling temps would be around 37 - 41 and with slight usage it will shoot up till 44 - 47. and once it goes up till around 45 - 50 sometimes everything will just hang and i'll have no response whatsoever from my mac and i'll need to reboot with pressing the power button. just did a hardware test on my machine and got this error, i suppose its the fans?

4VDC/2/40000004 : Motor