Cooling Problem

[turbo90gp]

When I fist start my car in the morning, my low coolant light stays on for a little while, then it will go off.  Also, my car heats up real fast, and then will cool down while driving, but at idle I have to rev the car to keep it cool.  Im thinking maybe my thermostat is stuck  because I have enough coolant and this just started recently.  Ideas...?

[R Dubya]

You chip'd or not?  It might not be a bad idea to start with the thermostat.  Just make sure you bleed it correctly afterwards.