There is a humming noise like going over rumble strips at high speeds. I am still trying to figure this out. The mechanic says he can't fix it until he hears the noise. The problem is is that the noise is not always present. It usually only happens at higher speeds like 65 mph on the highway and it is a humming that you hear for about 5 seconds and then it stops and then it comes again. Sometimes, I won't hear it for days and then it will come back. PLEASE HELP!! I want my car fixed!!!