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Any liquid-cooled car engine has a small device called the thermostat that sits between the engine and the radiator. The thermostat in most cars is about 2 inches (5 cm) in diameter. Its job is to block the flow of coolant to the radiator until the engine has warmed up. When the engine is cold, no coolant flows through the engine. Once the engine reaches its operating temperature (generally about 200 degrees F, 95 degrees C), the thermostat opens. By letting the engine warm up as quickly as possible, the thermostat reduces engine wear, deposits and emissions. If you ever have the chance to test one, a thermostat is an amazing thing to watch because what they do seems impossible. You can put one in a pot of boiling water on the stove. As it heats up, its valve opens about an inch, apparently by magic! If you'd like to try this yourself, go to a car parts store and buy one for a couple of bucks. The secret of the thermostat lies in the small cylinder located on the engine-side of the device. This cylinder is filled with a wax that begins to melt at perhaps 180 degrees F (different thermostats open at different temperatures, but 180 F/82 C is a common temperature). A rod connected to the valve presses into this wax. When the wax melts, it expands significantly and pushes the rod out of the cylinder, opening the valve.

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Q: How does a car thermostat work?
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You could have a problem with your thermostat in the car.


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If your thermostat isn't working then the gauge on the car won't work. You may also notice that your car runs hot.


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is car thermostat necessary in a tropicalize car?


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sometime the fan do not work which can cause the car to overheat. Also it can be a fuse for the fan. Check your thermostat.


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Check your thermostat, it is either stuck open or not in the engine.


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Yes the temperature gauge will still work. If it stuck open the car will run cool. If it is stuck closed the car will overheat.


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Take your thermostat out and put everything back together, run your car without a thermostat... If your car no longer overheats, replace your thermostat.


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