Cooling system | radiator
The cooling system helps regulate the amount of heat in the engine.
Your car’s engine runs most efficiently at a relatively high and steady temperature. If it’s too hot, the engine can overheat. If it’s too cold, the engine emits more pollutants, and components prematurely wear out. If the cooling system fails to keep the engine at the right temperature, it can suffer significant damage and in some cases, fail entirely.
Related Services & Repairs
- Coolant Expansion Tank
- Cooling Fan Motor
- Cooling Fan Assembly
- Heater Blower Motor
- Heater Core
- Radiator hose – lower
- Radiator hose – upper
- Water Pump
Although a few cars are air-cooled, most modern vehicles use liquid cooling. Here are the critical components in liquid-cooled systems.
- Coolant, or antifreeze, performs two critical function: keeping radiator fluid from freezing in wintry conditions and keeping the engine from overheating in the summer. Coolant is composed of 50 percent ethylene glycol and 50 percent water, which helps raise its boiling point and lower its freezing point. Corrosion inhibitors protect vital metallic cooling system components from corroding, and silicates lubricate seals. There are different kinds of antifreeze, which are most easily identified by their color. How do they differ?
- “The green stuff” is the traditional coolant, which can be used in most cars. It contains lubricating silicates and corrosion inhibitors, but these silicates deteriorate rather quickly, requiring coolant changes every 2 years or 24,000 miles.
- Coolant can also be red, yellow, orange, or even purple. Most coolants not green in color are similar: they are simply dyed different colors. They have a longer claimed service life, thus requiring fewer fluid changes—in some cases up to 100,000 miles. Refer to your owner’s manual for details on your car’s coolant requirements.
The radiator is
- a heat exchanger with hundreds of individual tubes and fins that reduce the temperature of the coolant. As coolant travels through the engine passageways, it absorbs and removes heat from the engine, transporting it to the radiator. Air flows through the coolant passages as the car moves, cooling the tubes and fins, and coolant reenters the engine with a reduced temperature.
- Radiator cap. If you’ve ever worked on a car, then you know not to remove the radiator cap while the engine is warm. That’s because the cap is a pressure-release valve. It also keeps the cooling system under pressure to increase the boiling point of coolant.
- The engine, or radiator, fan can be driven by a drive belt or an electric motor. It helps cool a car when it is stationary or moving slowly.
- The thermostat helps the engine reach operating temperature by preventing coolant from circulating to the radiator, thus allowing the engine to heat up more quickly. As the engine reaches operating temperature, the thermostat opens and allows coolant to flow through the radiator.
- The water pump circulates coolant through the system via an impeller (a rotor that spins to move fluid) that is driven by a belt.
- The heater core is a smaller version of the radiator located underneath the dashboard. A motor blows air past the heater core, which transfers heat to the air. This keeps cabin occupants warm even in winter.
- Transmission cooler. In addition to keeping the engine cool, on cars with an automatic transmission the radiator is equipped with a separate heat exchanger to keep transmission fluid from boiling over.
If your car is leaking coolant, immediately determine from where and how much. If it continues to leak, schedule your car for service as soon as possible.
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CAR WATER PUMP REPLACEMENT
If your car is showing signs of radiator hose or water pump leaks, let the Akins Auto Repair automotive service professionals take a look. Radiator hoses and the water pump are important components of your car’s cooling system, and if your radiator hoses and water pump aren’t working properly, you risk overheating your engine.
AUTO WATER PUMP PROBLEMS
Depending on your car, water pumps typically last between 60,000 and 90,000 miles. Radiator hoses can last up to 100,000 miles. Over time, however, both radiator hoses and water pumps wear out and if they are not replaced when needed, serious damage can occur. A collapsed radiator hose, for example, can quickly ruin an engine.
If you experience any of the following problems, bring your car into AkinsAuto Repair
- Your water pump begins to make a squeaking noise.
- Coolant is leaking from your car onto the ground.
- Looking under the hood, you can see coolant even a trace amount seeping from the water pump weep hole.
If you deal with these radiator hose and water pump problems quickly, you’ll prevent any further damage within the cooling system or engine.
AUTOMOTIVE COOLANT LEAK
Is your radiator leaking? Is your radiator overheating? Are you running low on coolant? If you are experiencing these or any other radiator problems, come into Akins Auto Repair for a Cooling System Diagnostic.
During a Cooling System Diagnostic, one of our experienced tire and automotive service professionals will:
- Pressurize the cooling system to check for leaks
- Perform an engine block test
- Visually inspect for coolant leaks
- Check all radiator hoses
- Check the water pump and belts
- Check the thermostat and cooling fan
Common causes of a radiator overheating including cooling fan failure, broken water pump, a broken fan belt, a stuck thermostat, coolant leak or a clogged radiator.
Radiator leaks can be the result of a leaky radiator cap, an internal leak originating in the head gasket or engine block, or an external leak typically from a worn-out water pump or radiator
Whatever is causing the coolant leak or overheating radiator, our automotive technicians will be able to diagnose the problem. After diagnosing why your radiator leaks, we’ll offer you different repair and replacement options and when we fix your radiator, our services will be backed by our triple guarantee: fixed right, priced right and right on time.