I brought the car in for a warranty service and naturally they couldn't find anything wrong with it.

The car idles at a normal 800-900 rpms

No my engine could be completely warmed up. The last time it did it, the dash board was actually vibrating.

20000

I notice that when my 03 vibe gt is idling the car vibrates on the inside much like an old car with alot of miles. I feel the vibrations through the pedals, my seat, and the steering wheel. Did this happen to anyone else and do you know what it can be?