the other day on my way to work i noticed a wierd banging sound on my car, it keeps banging all the time probably every second or something like that. it sounds as if it is coming from the drivers side front. it only does it when i go over 20mph i know its not my exhaust, part from that i dont know what it might be, the car drives fine tho. it sounds like im driving over a rumble strip thats how i can describe it. any help will be greatly appresiatied. thanks saichy