Wierd c2d e8500 temps..

hey, just wondering if theres any way of getting the temperature sensor in the chip "un-stuck", the idle temps on one of the core always sits at 35c while the other core is down in the mid 20s, on load, the discrepancy isn't as large but still usually see a 2-3c difference in the temp readings..not sure if this is something i should be worried about or if it's harmless..thanks

tyvm!!