Hey guys, newbie here. I just bought a 2004 Santa Fe base about a month ago and I love it! However, I've noticed that when I'm in idle (say at a stop light) my steering while and driver seat has a vibration. Sometimes, I can visibly see the steering wheel shaking very slightly. I replaced the spark plugs as soon as I got it and that's about all I've done to it. It has 133,xxx miles on it and has no other problems that I can tell (I'm not very mechanically inclined, however I took it to a shop and they said nothing is wrong with it) the vibration goes away when I start to accelerate, or put it in park. Is this a common issue with the 4 cylinder Santa Fe? Should I be concerned? I tried googling it and got no answers. Any help and input is greatly appreciated!