I know this is an old thread, but I've had a similar issue with my Accord after the engine was rebuilt. Please watch the video and tell me what you think. The car had no vibration pre-engine rebuild. It has epic interior resonance vibrations at about 2000 rpms. What should I be checking for?

Many thanks!!!

 

I'd probably look at the engine & transmission mounts first to see if any of the rubber is cracked.

Open the hood and see if the engine is visibly shaking with an assistant hitting the gas pedal.

I'd suggest not throwing parts and do some diagnosis.

Do you have a scanner that can read live data?