I have a 2000 SSEI and it does great until you go to turn left while braking, then it gets hard kinda like the power steering is kicking in and out. As soon as you let off the brake steering goes back to normal. Thanks for any help guys.
Don't know for sure why...It could have something to do with the way the pump and rack interact. However, at that high of speed, it could be more of a rack problem. The pump the problem at low speed is generally around the speed of parking the car.
I was also thinking upper strut mount because someone else had told me about that several days ago. Watch it end up being the rack- the only part I didn't keep from the parts car I junked a couple months ago.