Excellent, I have taken the car back in to the dealer and went for a little drive with the service manager.. That was a waste of time, he had no idea... The vibration is something that came on about the same time the CEL came on. It is only at 2500 RPM, not 2400 or 2600, and it vibrates even when the vehicle is not moving... Sort of feels like a rough spot and makes me think something like timing...Is the CEL making my engine go into a limp mode..??
They read the 420 code, and just like Autozone did. They just said that it was a bad cat and that it would be $1000. I am all ahout not having to swap out the cat. Still very concerned about the vibration, seeing it is right on 60mph, which I use all the time...
Thank you all.
