bad vibration

Have you tried to address something as basic and simple as checking the tires for proper balancing? It's hard to say what the vibration is based off of description alone; feeling the vibration really helps the diagnosis. A technician addressing the vehicle would be best.

You might have to replace one or both of the drive axles. Fairly common that the inner cv joint wears in such a way that it causes a vibration when accelerating. Having said that, always check the basics like DaveJHM said.

Hello The most likely cause is the right side axle, i can give you a free diagnostic at anytime please call for appointment (626)343-9860