The car wants to idle at around 1500rpms and will not go down even after it warms up. If you put it in reverse the tires chirp. I dont know if this is a common problem? I thought maybe the idle control valve was bad, but i have zero experience with mercedes. Any hints or solutions would be very help full. Also the steering is very loose, you can move the steering wheel maybe 3" both ways (without the front wheels moving) and it makes a clicking noise. The car has about 180,XXX miles on it. Any suggestions would be great.

thanks

jeremy