95 Mustang GT Convertible 5.0L 5-Speed
A weird vibration has appeared rather suddenly which is felt when the engine is turning at 1000 to 1200 rpm and it does not matter if it is parked, accelerating, decelerating, or cruising. Also I do not feel the vibration through the shifter but mostly through the floorboard and the seat of my pants. Any help would be appreciated.

 

Check crank dampper

 

Thanks, that was it.