Vibration at 1500 RPM
 

2008 3.0...
I have a vibration at 1500 RPM that I can make the car do it in neutral, drive or just driving the car and its only at 1500 RPM's I drove it into the dealership today and both the service advisor and a mechanic felt it as well. I have an appointment next week. Have any of you guys had a similar vibration or any thoughts on what it might be? You can really feel it through the gas pedel and pretty much through the car.