Cold Freezer but Warm Fridge

I have a refrigerator out in the garage that has not been performing well lately. The freezer portion is keeping things cold, but the refrigerator side keeps things barely chilly. On advice I received in this newsgroup, I unplugged the entire thing and let it sit overnight, then plugged it back in. Worked great, but a few weeks later it happened again. I repeated the procedure, and again it worked, but now it's done it a third time. Any idea why this keeps happening and what I can do to prevent it?
Thanks.
-Fleemo
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Iced coils from a defective defrost system will do that, as well as a defective evaporator fan. Go to www.applianceaid.com and www.repairclinic.com
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As well as the obvious, but often overlooked, controls inside the fridge controlling cold air movement to freezer and fridge compaartment. And storing stuff inside fridge that blocks air flow.
lee
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Thanks to you both for your replies. I'll investigate further and hope it's as simple as Lee's suggestion. Edwin, those links are invaluable, so thanks!
-Fleemo
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