Macbook won't sleep or wake on command, overheats

I seem to have a sleeping and overheating problem with my 13" aluminum late-2008 edition 13" MacBook (I bought it exactly 4 years ago).
When I put my computer into sleep mode, be it by shutting the lid or selecting the sleep mode, it doesn't seem to stay asleep for long. I'll hear it running, it'll get extremely hot (whether or not the fans turn on seems to be a crapshoot). If I let it sleep longer than a couple minutes, the battery will run out, completely. Half the time when I turn the computer back on after plugging it back in, it doesn't respond right away and I'll have to force a reboot.
Other than sleep and possibly fan issues, the computer is running fine. No other complaints. Already took the battery out and reset the SMC. Not convinced that did anything worthwhile.
Help?

Hi there kbuckle!
I have an article for you that can help you troubleshoot your computer's sleep issue. That article is specific to Mountain Lion, and can be found right here:
OS X Mountain Lion: If your Mac won’t go to or stay in sleep
http://support.apple.com/kb/PH11080
Additionally, this older article might have some further troubleshooting steps for you, but it is more geared toward Snow Leopard and other older operating systems:
Mac OS X: Why your Mac might not sleep or stay in sleep mode
http://support.apple.com/kb/HT1776
Hope this helps. Thanks for using the Apple Support Communities!
Cheers,
Braden

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Macbook won't sleep or wake on command, overheats

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