Cooling System

 

Engine Cooling System
When the engine is running, it naturally generates heat. That heat must be managed to avoid damaging the engine. Some of this heat must be removed from the engine and dissipated or transferred. This the job of the engine cooling system.


Car Over heatingThe engine has many passages that surround the cylinders. These passages are filled with antifreeze or cool-ant (These terms are used inter-changeably). When the engine is started, the water pump begins to circulate that coolant through the engine. Once the engine reaches between 180 and 195 degrees Fahrenheit, the thermostat opens and allows this coolant to circulate through the radiator.


Air moves through the radiator (either from the car moving, or when the car is stopped, from the fan used to pull air though the radiator). The heat from the hot coolant is transferred to the air.


The water pump also circulates hot coolant to the heater core under the dash where it provides heat for inside the passenger compartment.

 

Your radiator protects your engine and air conditioning condenser from overheating. It also plays an important role with the computer controlled system. An engine temperature sensor actually tells the computer what the engine temperature is so the computer can adjust the air and fuel mixture and engine timing. The efficiency of the radiator directly effects the efficiency of your engine.

 

That's why flushing the cooling system and pH balancing the coolant is recommended at least once every two years.

 

Our coolant system power flush removes contaminates. We pressure test the cooling system for leaks, clean the recovery bottle and pressure test the radiator cap. The system is then refilled with the proper mix of coolant and water to reach the -35 degrees for winter protection.

Checking coolant fluid

Be Careful Removing The Radiator Cap!

The radiator’s heat and pressure build up to dangerous levels when a car is running. Serious injury can come from removing the cap from a hot engine. If too much pressure has built up, removing the cap can send boiling water and steam up and out in all directions. Allowing the car to sit for around 30 minutes will ensure the pressure and temperature has dropped to a safe level before you attempt to remove the radiator cap. Most caps have a clear warning label on the outside of the cap itself warning about this important step.

 

 

We’re often asked questions about the cooling system – the system that cools your engine and keeps it at the proper operating temperature. Let’s examine the topic in two areas: first the coolant itself and, second, the parts that make up the cooling system.

 

The coolant in your car or light truck is the mix of water and antifreeze that circulates through the engine to draw off heat. First, you need to have the proper amount. If you don’t have enough coolant it can’t keep your engine cool.

 


 

You also need the right kind of coolant. Different makes of sedans and other vehicles require different coolant formulation to protect against corrosion.

 

Finally, your coolant needs to be fresh. Over time and miles, the anti-corrosion additives in the coolant are depleted and the coolant can actually start to eat away at the cooling system parts. Your owner’s manual and our service adviser can help you with the recommended coolant replacement schedule and make sure you’re getting the right type of coolant.

 

Now let’s talk about the cooling system components. These will all eventually wear out and need to be replaced.

 

Starting with the radiator, we see them coming into the shop with leaks or clogged with deposits. Depending on the damage, we will clean, repair or replace. We also see radiator pressure caps that can no longer hold the proper Car overheatpressure. We recommend replacing pressure caps when you change your coolant to avoid this problem.

 

We see leaky water pumps and hoses in our area that need to be replaced, too. There’s also a part called the thermostat that opens and closes to regulate the flow of coolant. Sometimes they stick open or closed and the cooling system won’t work properly.

 

Engine damage from overheating can be very expensive to fix so it’s important to maintain your cooling system properly with scheduled coolant replacement and periodic inspections of the cooling system. Certainly come in if you suspect a leak and have us take a look.

 

 

 

 

 

 

 

 certified auto repair mechanics

Accurate Auto Care

2950 Sweetwater Ave.

Lake Havasu City, AZ 86406

Ph. 928.680.4046


 

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