Ive already gotten some great help from the folks here and the more I read the the more I know. But heres my dilemma, I had to change out my blend door actuator today and once I was done I have a check engine light. I'm sure I reconnected everything I disconnected so I dont think thats it. I did have the battery disconnected the whole time as well. I followed the procedure I found linked in one of the threads I found here to the letter. I did notice that after I got it put back together the idle was kinda lopey, it cycled up and down 3-400 rpms. Even after the idle smoothed out I could feel a stumble. I think it may have had the CEL all along but for some reason after removing and reinstalling the message center buttons it came on, Ive never seen the CEL on even when the car wasnt running. Anyone have anything I should check or should I just belly up to the service desk at the local Dealership?? Thanks for the help.