well i removed my dvd drive and add 120mm fan on top of the case [pic]

but there is one problem...the temp only getting up when i activate the fan, when i turn it off the temp go down =|
i checked the temp using two sensors, one on top of the gpu heatsink and the second on the cpu heatsink...
maybe i didn't placed the sensors in the right place, when do i have to place the sensors to get good vision of my temp?

btw sorry for the bad english...

Which way do you have the fan blowing? If you have it sucking out from the case then there is your problem. Reverse it and you should get better temps

sorry i forgot to mention that...the fan blow air into the xbox

well that's strange.. i turn the fan and now it blowing air out and the temp go dwon/stay stable but when i turn the fan off the temp goes up...

fans blowing out is best.

but the temp still doesn't low as i thought....what else can i do to prevent the heat?

reverse the stock fans and have the 120mm sucking air out then you should have good temps i dont know why the temp would go up when you have the fan blowing in and i really dont know why it gos down when you have it sucking as it should be fighting with the stock fans

i was checking the temp with two sensors when it got up/down, maybe i didn't locate the sensors in the right place to get more accurate temp...