Okay I'm totally confused and getting very upset. I have a 2000 ford contour with the 2.5 duratech. In the past few months there have been times where it will start vibrating all of the sudden really bad. Sometimes it smooths out and sometimes it gets worse. At first I thought maybe the alignment was off and the tires were out of balance so I had both of these done. It smoothed it out for a few weeks and then went back to vibrating and shaking the steering wheel like crazy. I then decided maybe it was a brake issue so I replace both the pads and the rotors on both sides and it pretty much quit for a few more weeks then it started doing it really bad. I talked to some people and they said it could be a warped rotor so I bought another brand new rotor and replaced it with the side that was making noise and it drove like a new car for about a week. Now it is starting to vibrate again. The other day I noticed it was driving kind of funny so I took look all around and found out I had a really low tire and there was a screw in it. I fixed it and now driving on the freeway my whole car is shaking and it shakes so bad when you talk its like your voice is talking through a fan. I am totally confused and everytime I take my car into a shop no matter what the problem has been the mechanics are always baffled because the computer won't tell them whats wrong so therefore they have no clue especially when its an issue the computer cant tell them. I usually do some research on here and always find what the problem is but this one has me totally irratated and baffled, please help.