Got some problems with my Nissn Sentra these past few days. Have some difficulties in driving it. When I'm in ling drives and bumpy road. It bacame so bouncy and hard to steer. I've showed it to the mechanic yesterday and he told me that the Nissan shocks should be replaced and I told him to do so. But after 2 days of driving. It has another problem with the steering part, but they haven't told me anyyhing about it. Should I have to replaced the Nissan steering rack also or have it check first? Or is there any option before this? I'm hoping I can dress up my vehicle, that's why I'm trying to save some for it. Can you help me with this one?