Hello Kessa. Welcome.
I had a slight wobble on my steering when breaking hard (but nothing through brake pedal). Thought it might be warped discs, but these are expensive and my pads were on the way out so just changed the pads, and re-lubed the calipers. This seems to have stopped it!
The car will rev up and down a bit when you first turn it on due to the automatic choke trying to sort out the fuel-air mix. Is this whats happening or is it doing it all the time?
I had a similar problem, and replacing the temp sensor fixed it (engine thought it was always cold, thus fooking up the mixture).
Hope this helps (only vague ideas sorry!)
Rich
P.S. get your ass to Santa pod on July 11th!