Originally Posted by mogo116
I have the hyline offroad hood vents on mine they don't do much except melt the snow in the winter I feel the hot air coming out of them but never saw any movement on the gauge
Well, since nobody else addressed this...
1. If you feel hot air coming out of the vents, then that means they're doing something: exhausting hot air upwards.
2. Your TJ's engine is not air-cooled...it's liquid-cooled. The gauge that measures the temperature of the coolant is doing just that: measuring the temperature of the coolant
. If you had an ambient air sensor under your hood, you would likely see a change in the under-hood temperatures. You would have to change your thermostat - which you did - in order to make a coolant-temp gauge read differently.
3. The engine is going to run at 210 - unless the thermostat is changed - regardless of ambient temperature, all other things being equal. In the middle of summer, it runs at 210. In the dead of winter when it's 70 degrees colder...210, again.
4. The purpose of a louvered panel in the hood is not to make the engine run colder. The purpose of a louver is to allow hot air to escape from the engine bay, and this escape path allows ancillary areas to remain cooler than they would should it not be present.
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