过小坑或bump嘎吱嘎吱多半是control arm和sway bar的bushing上点silicon grease就好
如果是嘎蹬嘎蹬的声音那就要看情况,你的情况可能是strut mount的大rubber碎了,瞎猜哈!
https://www.google.ca/search?q=strut+mount+rubber&source=lnms&tbm=isch&sa=X&ei=4lOHU9fmO4bYoASapIDgBw&ved=0CAYQ_AUoAQ&biw=1280&bih=699