I have s 2004 f250 4x4 crew super duty 6.0l diesel auto just put in new long block.
Has a strong vibration between about 50-60mph only in overdrive with little acceleration and gets stronger as I accelerate more until it shifts out of overdrive or let off the accelerator and then it goes away completely. I have checked ujoints and replaced drivshaft center hanger bearing need help please...