Hi:
Without knowing for sure, the only choice is to have the coolant temp tested by a mechanic. However, before you do that, craw under the dash and see if you can identify where the clicking sound is coming from. It may be a stuck vent door that isn't opening or closing causing the heat problem. If that doesn't work or you can't find a problem, have the temp checked. Your mechanic will have a thermometer that can read high temps and it's kust a matter of removing the rad cap, placing the thermomter in the rad and allowing the car to warm up.
Let me know what you find.
Joe
Saturday, December 6th, 2008 AT 2:05 PM