Macbook Fan runs all the time

jwolf6589

macrumors 68000
Original poster
Dec 15, 2010
1,567
217
Colorado
I have a Macbook White (13-inch, Mid 2009) with 6GB's RAM running Mavericks 10.9.2 and the fan always seems to run for some reason. Its running on a hard surface (my desk) and the power is plugged in. I do not understand this behavior as it runs with lots of apps running or with few apps running. Doing a Google Search this is a very common problem that I just cant find a solution for. Does anyone know? Thanks..



 

Nov 28, 2010
22,668
27
located
And at how many RPM is it? The MacBook's fan is always running, even if idle, it runs at around 2,000 RPM. Only if it gets hotter and hotter can it go up to 6,000 RPM.

Use iStat Pro to get a look at the fan speed. Or any other fan speed monitor out there.
 

jwolf6589

macrumors 68000
Original poster
Dec 15, 2010
1,567
217
Colorado
And at how many RPM is it? The MacBook's fan is always running, even if idle, it runs at around 2,000 RPM. Only if it gets hotter and hotter can it go up to 6,000 RPM.

Use iStat Pro to get a look at the fan speed. Or any other fan speed monitor out there.
It was always running at 6000-6200 RPM but after a SMC reset it has cooled down to 4300 RPM. The fan does not sound noisy or anything so not sure what the problem is. A hardware problem or not?
 

logana

macrumors 65816
Feb 4, 2006
1,385
1
Scotland
Switch the Activity Monitor to the CPU pane to see what is going on - I suspect one of yours applications is using a lot of CPU power if the fans are running at that speed.....

Try using SMC fan control to see what temp the CPU is too....
 

jwolf6589

macrumors 68000
Original poster
Dec 15, 2010
1,567
217
Colorado
Switch the Activity Monitor to the CPU pane to see what is going on - I suspect one of yours applications is using a lot of CPU power if the fans are running at that speed.....

Try using SMC fan control to see what temp the CPU is too....
I booted into Windows XP and it runs at 6200 RPM there as well. It has to be a hardware problem and the fan may have dust inside. I wonder how much it will cost to clean it.

----------

Then use the CPU tab in Activity Monitor and sort by CPU and also select to SHOW ALL PROCESSES in the View menu.
Nothing is running high. I think I have a hardware problem as the problem persisted booted into Windows XP. I will need to get the fan cleaned.
 

jwolf6589

macrumors 68000
Original poster
Dec 15, 2010
1,567
217
Colorado
Strange..

Mac has returned to 2000 RPM and no cleaning was done. Also added to this is the fact I am at the Apple store as I type and Mac has tons of apps open and is running at 2000 RPM.
 
Last edited: