Hay i need some serious help. My 2000 i30's steering wheel will vibrate at every red light. its very anoying and im loosing my patients with it. when i open the hood it seems like it gets worse when the radiator fans turn on. i looked under that hood and it seems like the back 2 pullys a pretty rusted but that could just be me. and only those 2 look like thay shake a like (like a off balance wheel) im not sure if that is the culprate but i would like some more ideas. please help!!!!

bad ignition coils?

Do you have an auto? Do you notice that your idle drops when you come to a complete stop and leave it in Drive?

That was happening to my 98 I30. The RPMs would drop to ~ 500 when I was at a light. I cleaned out my throttle body and that helped a bit. Adjusting the idle screw would probably help with that too.

Sounds like just a misfire problem to me. Is the Check engine light on?

Just your steering wheel shakes? Or the whole car shakes...

mine shakes a bit too, but just alil bit, its just the idle in my car i hope, but i get low rpms at a light too around 1000, but thats normal, get it checked out i think before the problem can get worse, something doesnt seem right, and your car is only a 2000

happened to my sdads car....it was his mounts...

Mine does the same thing, but it's not so severe. It also seems to only occur once the fans turn on. I've mentioned this to the dealer on several occasions, but they're never able to reproduce it. I can't really blame them though. I have trouble reproducing it myself, as it doesn't ALWAYS do it.