Ok.. easiest thing to do.. pull the three 10 mm throttle body nuts off and slide it out of the way. If you see coolant pooled up right inside the intake, then you need to plug the coolant ports in How to Mod a Lim. that'll take care of the issue.

If it's not soaked.. they you should clean the TB while it's off the intake. Likely it's horribly dirty. It's common.