In N.Ireland we have a Gov't controlled MOT, now called MOT2 with all sort of computer gizmos for suspension and the old-rip-the-steering apart moving pads to check bushes etc. During this test the steering wheel gets moved about quite hard by the forces. The Engine is off during it.
I am starting to think that everytime after this my steering pump is affected and gives severe vibration when turning the wheel. I have also noticed the same at other times perhaps after working at the car and moving the steering at the road wheels by hand (say for removing track rod end ball joints).
Usually seems to clear itself after a few days.
Is this just air in the fluid, or seal problems?
-- Tony