Was driving from New York to Ohio and experienced an overheating condition. 2.0 FS-DE, all stock, 217k miles, broken A/C compressor, A/C always turned off. I stopped the car when the temperature gauge went to 75%. Oil level was normal, and coolant fan was working, but I topped it off anyway, and added tap water to the overflow reservoir after it cooled down. The day before this happened the reservoir was boiling over, as if it were about to explode, but the temperature gauge read 48%. Ever since, the temperature has gauge has read 48%, but after stopping the car, the reservoir still boils over! or steam comes out of it. Should I repair something? I need to replace the clutch this summer anyway so I would prefer to do any needed repairs while the engine is out of the car. Thanks.