I noticed about two weeks ago that my left front axle boot was ripped and leaking grease in my '97 200sx SE-R. It had not given me any noticeable problems until today.
Seemingly out of no where, the car began shaking mildly at about 40mph, but the steering wheel itself did not. As soon as I put it in neutral and coasted, it stopped. I first thought it was a loose wheel, so I got out and re-torqued all of the lug nuts, they were all snug. So I thought maybe it was one of those sections of the road where it's chopped up. Anyway I kept driving and it was fine and I got on a backroad which was smooth, and it started again, same thing, upon light/mild acceleration, shaking, put it in neutral, smooth. At this point I returned home and did some experimentation in my parking lot, on hard right turns under 15mph it shakes fairly violently, but not as bad as hard left turns.
To me this sounds like it could be either the left/right hub and/or bearing.. but I'm not sure if the front axle boot has anything to do with it or not. The car rides on Tein coilovers and 16" 205/45's if that helps.
Anyone experience these symptoms and what was the solution? THanks
Edit: The car has 180k on it, with the original motor mounts. I have the poly mounts sitting in my bedroom but haven't gotten around to installing them. I first thought it would be a bad mount since the shaking dissapears when coasting in neutral.