Ah yes the mysterious shake... As far as I can tell, its the torque converter... Though if that's not your problem, it could always be your idle sensor...
Could it possibly be the U-Joints as well?
you have to be more specific for a proper answer... at what speed does it shake?.... 40mph> ? what do you mean mist?
Your tires are unbalanced. You need to get them balanced.
what causes hesitation on ford f150 truck
40mph is about 64.3km/h
More than likely tire issues. As simple as tire balance if not possibly a tire going south on you. Tell me more. Does it do it just at 40 or at higher or lower speeds as well, and where do you feel it, steering wheel, seat....and can you do anything to make it more pronounced?
40mph = 64.3738kmph
This is Alzheimer's Disease.
dude you need a tune up
the movement in the rocks dosnot cause the ground to shake?
No
Release of energy causes the seismic wave which make the ground shake.
stress or a damage nerve in the brain.