Most common questions used to investigate
Is the coolant level low?
Is there coolant leaking at the front of your car?
The problem might be a clogged or overly dirty radiator. When your radiator is covered by filth, it might not be able to cool the water coming from the hot parts of the engine. Did this help?
Is the coolant level dropping down extremely fast?
Common conclusions
According to the laws of thermodynamics, heat flows from an area with a higher temperature to an area with a lower temperature, it never happens the other way around. If the coolant in your engine cooling system is low, there is nowhere for the heat of the engine to transfer to. Top up your coolant every once in a while, and every 30,000 miles all the coolant should be flushed out and replaced with a new batch.
The problem might be with your water pump. There are multiple gaskets and seals that ensure that coolant will not leak out and that there is a constant flow of it, if any one of them breaks it will cause coolant to leak from the seized coolant pump.
You need to periodically get your radiator cleaned professionally to prevent this from happening again.
There might be a crack in your radiator. If there is a crack in the radiator, no matter how small, because the coolant passing through it is pressurized, it will cause the radiator to run out of coolant fast. If this happens to you while you are driving, you need to pull over and call for a tow truck. If you try to drive an overheating car you can potentially do a lot of serious harm on the engine.
The radiator fan is an important part of your car's cooling system; if it is not running, there is nothing keeping the coolant cool. The problem might be electrical, so you need to take your car to the garage immediately so their electrician can pinpoint the problem and fix it.
References
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