So I bought this crossfire , a 2005 base convertible 6 spd . Occasionally , while driving , the "check coolant temp" comes on the display with a beep . It will stay on for a while then go away . The gauge seems to work properly ( starts from bottom and works it's way up to 1/2 or just slightly over in a reasonable amount of time) and according to the gauge it's fine . Coolant is full and burped . Upon physical inspection , it doesn't "seem hot." Fan works as it should . Any ideas? CTS was my thought ...