I took it to AutoZone just so that I could kinda get an idea of what the problem would be by using their scanner. I know that their scanner is very basic, but it gave me some idea of what them problem may be.

It read that the car had a cylinder 6 misfire. Took it to my mechanic and he was unable to find the problem. He said he had replaced all plugs but other than that I'm not sure how he was able to determine it was the computer. I'll ask him if he's tried what you suggested.

Thanks!