So it seems you were correct ...... I ran an OBD2 on her yesterday and it showed a number 3 misfire and bank 1 rich . So I popped the hood and wiggled the COP a bit and took it for a drive and it runs like new again ? I'm guessing a bad contact at the plug ? Not sure if I should get COP just in case or just run it as is . I can't believe that one cylinder acting up would cause it to run so bad but I guess computer cars are finicky beasts . Thanks for the help so far guys .