Hi,
I rather actual temperature gauges over lights, since you know if you're truly running hot or not.
In your case, I would recommend that when this happens, have someone use a thermal indicator (maybe autozone can do this) to see what your engine temp is and see if it's running hot. The light is tripped by a sensor that is activated by excessive heat from the engine.
If the engine temp is normal, replace the sensor. If it's hot:
1. Make sure you're oil level is good
2. Make sure the coolant level is good
3. Make sure the water pump is working
(I'll assume your radiator is not stopped up)
4. Consider replacing the thermostat.
I hope this helps... Good luck!
Please see my tip at http://www.fixya.com/cars/r5929960-s_thermostat . These are generic instructions. If you get stuck or need specific instructions for your car, please get back to me with model, year and engine info.
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