I feel a vibration in the car, especially over 50 mph. When I remove my foot from the accelerator, it disappears. It is emphasized when I accelerate. I have had all of the tires checked. 2 tires were replaced. No change. Balanced tires, no change. I can feel the vibration in the steering wheel. In neutral, there is no vibration at any speed. I can hear the vibration. Down shifting does not change the vibration.
It seems to me that there is no vebration unless power is applied to the wheels. Do you think it's the universal? The low level noise seems to come from the engine compartment but it is no louder when I roll down the window. What are the possibilities?