It's a combination of both, but maybe more noise than vibration. I wouldn't think that a heat shield would create that level of vibration, but I'll be sure to check it. Thanks!
My daughter has a 2000 Ford Focus Automatic with about 50k miles on it.
When it is cold, there is a relatively loud vibration when it is in Park, Reverse, to a lesser degree Neutral, but it goes away when in Drive. Once the vehicle warms up, nothing in any "gear".
I have checked the tranny fluid, and that's apparently not the issue.
