I would start off by installing some software to monitor the thermal sensors and the fan. I like '''Temperature Gauge''' which you can download from the App store. There are others apps out there that are just as good. Post an image of what it is showing.
I suspect you may in fact have a sensor issue Vs a fan issue but without more information its hard to tell.
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== Update ==
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The temps look OK, so we need to focus on the fan connector and the ribbon cable.
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== Update ==
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The temps look OK, for now lets focus on the fan connector and the ribbon cable. You still may need a better tool so you can see the fan sensor.
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Can you take a good hires picture of it.
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Can you take a good hires picture of it.
Also, lets try doing a SMC reset as well and see if that clears things. Here's the Apple TN on how to do it: [http://support.apple.com/kb/HT3964|Intel-based Macs: Resetting the System Management Controller (SMC)]
I would start off by installing some software to monitor the thermal sensors and the fan. I like '''Temperature Gauge''' which you can download from the App store. There are others apps out there that are just as good. Post an image of what it is showing.
I suspect you may in fact have a sensor issue Vs a fan issue but without more information its hard to tell.
+
== Update ==
+
+
The temps look OK, so we need to focus on the fan connector and the ribbon cable.
+
+
+
+
Can you take a good hires picture of it.
+
+
+
+
Also, lets try doing a SMC reset as well and see if that clears things. Here's the Apple TN on how to do it: [http://support.apple.com/kb/HT3964|Intel-based Macs: Resetting the System Management Controller (SMC)]
I would start off by installing some software to monitor the thermal sensors and the fan. I like '''Temperature Gauge''' which you can download from the App store. There are others apps out there that are just as good. Post an image of what it is showing.
I suspect you may in fact have a sensor issue Vs a fan issue but without more information its hard to tell.