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Overcooling can cause as much damage to an engine as overheating. Overcooling most commonly occurs when the coolant bypasses a defective water temperature regulator and flows directly to the radiator preventing the engine from reaching normal operating temperature.

Routinely check water temperature regulators to ensure that they open and close properly and that they are free of any defects. Check bonnet type regulators for dents or grooves that can prevent them from sealing properly. Coolant can also flow around a water temperature regulator that is working properly, which can falsely indicate overcooling.

Low ambient temperature, combined with a light load, will also cause overcooling, even though the coolant does not flow through the radiator under these conditions. Always make sure temperature gauges are working properly. Check them for accuracy by comparing the coolants in the water temperature regulator housing to what the gauge indicates. Confirm coolant temperature using a Thermistor Thermometer. Replace any defective gauges immediately.

Inspect the water temperature regulator housing and counterbores that the regulators fit in to. Be sure all surfaces are clean, smooth and free from any foreign material. Check the radiator housing seal for "cocking," which can also cause the coolant to flow past the regulator and seal. If there is a bleed hole, make sure it's open.

Open vent lines can cause overcooling during low loads or while idling the engine overnight, installing a check valve typically corrects this problem.

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Q: Is Overcooling an engine is as bad as overheating?
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Why car engine designed to prevent overheating?

If an engine overheats the metal parts expand and the engine will seize up. A seized engine is usually unrepairable.


What is the solution of the engine overheating?

The solution to engine overheating depends on the underlying cause. Some common causes of engine overheating are low coolant levels a faulty thermostat a broken water pump or a clogged radiator. To determine the cause of the engine overheating you should first check the temperature gauge on the dashboard. If the temperature is rising then the problem is most likely related to the cooling system. To resolve the issue you can take the following steps: Check the coolant reservoir and refill it if necessary. Check the thermostat and replace it if it is faulty. Check the water pump and replace it if it is broken. Check the radiator for any obstructions or clogs and clean them out.If the cooling system is in good working condition and the engine is still overheating then there may be other issues such as a worn out head gasket a problem with the fuel injectors or a worn out timing belt. In such cases it is best to take the car to a mechanic for further diagnosis and repair.


How does the fan work?

If the question is about the motor fan or engine fan, the main function of this fan is cooling the radiator of the engine which in turn is cooling the water circulating inside the engine unto the radiator and back. This keeps the engine at a fairly operable temperature without overheating and damaging damaging its parts.


Why is a cooling system required in a motor vehicle?

Because quite a lot of the energy used by a combustion engine gets turned into heat whether we want it or not, so a cooling system is needed to keep the engine from overheating.


How fast do you think a 1998 Geo Metro LSI can go without overheating the engine?

You shouldn't be able to overheat a Geo Metro unless there is something wrong.

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How- cooling oil why- overheating is bad for the engine parts


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Burning oil? Bad rings or valves Overheating? Bad head gasket?


The engine is overheating and you have no heat just cold air blowing?

Probably a bad thermostat.


What causes a head gasket to go bad?

The most common cause is the engine overheating.


Why is your Jeep Wrangler overheating?

There are many reasons why a Jeep Wrangler is overheating. A leak in the radiator system will cause overheating. Too much pressure in the engine can cause overheating. A bad water pump or thermostat could cause overheating. The transmission can also cause overheating if it is leaking.


What policy does U Store It have regarding the storage of used septic tanks?

"The U Store recommends that you store their used septic tanks in a safe environment, where they will not be damaged due to overheating or overcooling."


Is it bad if the oil in your car smells burnt?

Yes, that indicates overheating. Change the oil and be sure and use the correct weight. Make sure the engine is not overheating.


How does engine coolant get into the combustion chamber?

A bad head gasket , a warped head usually from overheating , would allow engine coolant into an engine cylinder


If your temperature gauge on your 1998 Lincoln navigator is bad will it make your engine misfire?

No the gage has no effect on firing. An engine that is overheating will misfire.


How do you know when the water pump is bad?

Noisy, leaking from the weep hole on the bottom of the pump, or engine overheating.


How do you tell if your water pump is bad on Chevy 350?

The most obvious symtom would be overheating of the engine.


Will a bad water pump make a vehicle run bad?

No. A bad water pump can make a rumble noise and leak coolant which may lead to the engine overheating.