For the last few times I've been on the road,I've noticed a vibration especially while accelerating at 50mph and up.Is this likely a trans mount or motor mount going bad? I checked both universal joints, but that has been several months ago. Thanks,Larry

 

Could be tire balance also.

 

bad tire is probably the most common.
have an observer travel along next to the car and see what can be seen.

Tire stores generally do balance for free or cheap also.

 

Thanks for the comments.I will check it out and report back when I Can get it on a rack. Larry