"Adding cold water to a hot engine will always crack the block" (while risky, slow addition to the reservoir may be a temporary fix).

Overheating can be caused by a variety of things, from an air bubble in your coolant, blown fan fuse, to a bad head gasket, or a warped engine head. There are a few things that can cause a car to overheat, whether it's a leak in the cooling system or an issue with the radiator. Low coolant level or a cooling system leak are other reasons that your car engine can overheat. ... Do Not Sell or Share My Personal Information Reject All Accept ... Overheating can be caused by a variety of things, from an air bubble in your coolant, blown fan fuse, to a bad head gasket, or a warped engine head. Your vehicle can overheat for various reasons, including problems with the radiator, water pump, and cooling system. For a proper diagnosis, bring your car ... What to Do When a Car Overheats. Often, drivers don't notice radiator or cooling system problems until there are clear signs of overheating — but many issues ... Overheating can be caused by a variety of things, from an air bubble in your coolant, blown fan fuse, to a bad head gasket, or a warped engine head. Your vehicle can overheat for various reasons, including problems with the radiator, water pump, and cooling system. For a proper diagnosis, bring your car ... What You Should Do When Your Car Overheats · Turn off the A/C, and turn on the heat · Pull over right away to a safe spot · Turn the car off · Wait until the engine ... Overheating can be caused by a variety of things, from an air bubble in your coolant, blown fan fuse, to a bad head gasket, or a warped engine head.