Sometimes if you remove the thermostat it will cause overheating because the coolant flows through the radiator too quickly; not allowing it to cool down.
I disagree on this. And I’ve heard it a lot. Because what is being said is that water cannot be cooled down at the same rate as it is heated up. If the idea were true and the thermostat was removed, the water would be flowing through the engine faster as well. Then the water cannot be heated because it’s flowing too fast.
the reality is this: overheating car has its thermostat taken out because “it’s overheating and there isn’t a cheap enough solution.” The owner does this because they do not understand that the thermostat controls the lowest operating temperature, not the highest.