Hey guys, my 2003 base model has been having issues lately with a buzzing sound staying on after the car is turned off. This has been killing my battery constantly. I have tried taking out every fuse in the fuse box and nothing makes it turn off. This is my only car at the moment, and I need it to be in working order. The noise appears to be coming from behind the engine, between the engine and the firewall of the main body. I at first thought it was the little fan that is underneath the engine, but it wasn't spinning when I heard the noise going. Any help would be greatly appreciated!

Thanks so much!

Tyler