When my car gets up to operating temp I can smell coolant. I replaced the radiator lines and the anti-freeze. That didn't fix the problem. I raised the hood after just shutting the car off and saw a small wisp of steam coming from the uim. It smelled like coolant. So what could be leaking from the uim? The steam is coming from under the throttle body on the driver side.

 

Not the UIM, it's the LIM. There is a coolant passage through the LIM for a line that runs to the turbo. The o-rings are shot, you will need to replace then. meaning you need to pull the UIM. You can see them in my pic.

 

Sounds like a heater hose. There's one right under the fuel lines going to the firewall behind the oil filter.

I might be wrong so get a friend and have them rev' it up and see if it's leaking from there. Make sure you have some goggles on so your eyes don't get burnt by hot coolant.

 

thanks satanicmechanic that sounds like what the problem is.