I just got home from a 500 mile weekend, and about 100 miles from home, my 95 Town Car picked up a vibration between 60 and 80 mph. It's comming from the rear or under the car. The steering wheel doesn't shake, but the seats do. I have had a noise under the car when backing, one of my co workers said it sounded like u-joints were bad. I lifted the car today, and tugged on the driive shaft and it seems tight. My wheel weights haven't moved and the vibration doesn't change if the car is out of gear. I notice it is worse when the tank is full of gas, so weight must play a roll in it. I have no idea what it is, unless it is u- joints...... anybody got a clue? There is no noise like a wheel bearing or rear axle. Could a tire have went bad?
Thanks,
E
1995 LTC Executive "Money Green"