Archives for December 2013

The cooling system keeps MN car owners’s engines from overheating while they are driving around Eagle Lake, Janesville and Mankato. Its job is to move heat away from the engine. Let’s talk about the various components of the system and how they make this happen.

The radiator is the part most Eagle Lake auto owners associate with the cooling system. Coolant flows through the radiator which has fine cooling fins that draw the heat out of the coolant and dissipate it into the air. To make sure there’s enough airflow over the radiator, a fan pulls air over the cooling fins even when the sedan is idling.

In some sedans, the fan is powered by the serpentine belt. On others, an electric motor runs the fan. Electric fans turn on and off as needed. You may have heard the fan kick on shortly after you turn your sedan off. The sensor has determined that the engine needs a little help cooling down to a safe temperature.

A hose connects the radiator to the water pump. The water pump pushes the water into the sedan engine block. Now the engine block and cylinder heads have passages for the coolant to pass through without getting into the oil or the combustion chamber. In the automotive community, these passages are referred to as the “water jacket”.

While the coolant is passing through the water jacket, it absorbs heat from the sedan engine on its way to the radiator for cooling. Between the engine and the radiator is a gatekeeper called the thermostat. The thermostat’s job is to regulate the temperature of the engine just like your home thermostat regulates the temperature in your Eagle Lake house. It gets your engine up to the correct operating temperature and then keeps it from overheating.

When you first start the engine, it’s very cold and needs to warm up. So the thermostat blocks the flow of coolant to the radiator. As the engine warms up, the thermostat starts to let coolant flow through the system.

The final component the team at Hughes Automotive Inc wants to point out is the overflow reservoir. This bottle is designed to hold some of the coolant. It’ll have a mark that indicates whether or not you have enough coolant. This is where you should add coolant if you just need to top it off.

Caution: never open the reservoir or the radiator cap when the car’s hot. The cooling system is pressurized and opening them while it’s hot can cause hot coolant and steam to escape resulting in serious burns.

Cooling system failure is the most common mechanical failure in vehicles around Eagle Lake, MN. At Hughes Automotive Inc, we can do a periodic inspection of the components for leaks, loose connections and weakening hoses.

Hughes Automotive Inc
109 E LeRay Ave
Eagle Lake, MN 56024
507.257.3730

Your manufacturer has also specified a cooling system service interval. With a cooling system service, the old coolant is replaced with correct clean fluid that contains the additives required to prevent corrosion. The additives are depleted over time and you need fresh fluid for adequate protection. Your radiator pressure cap should be replaced at this service as well.

Good brakes are obviously very important. If you’ve ever had your brakes go out while you’re driving around the Mankato area, you’ll know how terrifying it can be. Today we’ll focus on how to tell when you have a brake problem, and how to make good repair choices.

Often, the first indication that something’s wrong with the brakes is an unusual sound. It could be a squeal, chatter or grinding sound.

Some brake pads have a little piece of metal embedded in them that will make a squeal or chirping sound when the brake pads have been worn down to the point that they need to be replaced. It’s an early warning indicator.

When you hear that sound, schedule an appointment at Hughes Automotive Inc soon.

Now a chattering sound is more urgent. That usually indicates that something is loose. It could be a brake pad or even the brake calipers. If one of those parts falls off, you could have some serious trouble stopping the vehicle. It would be a good idea to park it until you can get into the shop.

A grinding noise usually means that the brake pad is completely worn away and the metal parts of the brake are rubbing directly on the metal brake rotor. That means the rotor is being damaged and will need some work. More on that later.

Another warning sign is that your brake pedal may feel soft and spongy – or it may even feel very hard to push in. Both could mean trouble. And of course, you may get a dashboard brake warning light.

Now when it comes time to replace your brake pads, you have a choice to make. You can get the same pads that came standard on your vehicle. You can expect the same performance and durability as with the pads that came on the car from the factory.

Now you can also get a budget brake pad. Sometimes drivers insist on lower cost pads. That’s OK if the budget demands it, but you need to be aware of the trade offs. Lower grade pads are usually noisier, so you’ll have to live with more noise when you apply the brakes. They also tend to generate a lot more brake dust, you know, that black dust that accumulates on your wheels. And they probably won’t last as long either. In our opinion, that’s a lot of compromise for just a few dollars in savings.

You can also choose to buy premium brakes pads. These perform at higher specifications than the factory pads. You can expect quieter operation, less brake dust and better stopping power.

Now, getting back to the rotors. The rotors are the discs that the brake pads clamp down on to stop the vehicle. If you’ve been driving with completely worn brake pads, you’ve scratched grooves into the rotors. If the grooves aren’t too deep, the rotor can be resurfaced. A thin layer of metal is cut off the surface of the rotor to make it smooth again.

Now, if the grooves are too deep or if the rotor has already be resurfaced before, there may not be enough material to resurface and still have a rotor that’s thick enough to safely stop the vehicle. In that case, the rotor will have to be replaced.

Something that’s often overlooked is the brake fluid. Your manufacturer has a recommended schedule for evacuating the old brake fluid, cleaning the system and refilling it with fresh brake fluid. This is really important to brake performance.

So here’s the bottom line: if you suspect, inspect. If you notice any of these warning signs, have your brakes inspected. Your advisor can help you make the repair decision that’s right for you.

Is your car sometimes hard to start on an early Eagle Lake morning? When you turn the key, does it hesitate or stutter? If so, the problem could be the result of a dirty fuel system. Your car’s fuel system starts with the air filter and ends in the top of your engine. Over time, different parts of the system get dirty, which robs you of performance and hurts your fuel economy.

Hughes Automotive Inc
109 E LeRay Ave
Eagle Lake, MN 56024
507.257.3730

Most of our sedan in Eagle Lake have fuel injectors, rather than a carburetor. Fuel injection systems have fewer problems and require less adjustment. But they still need to be properly maintained. This is why your owner’s manual has a schedule for cleaning your fuel injectors and other parts of your fuel system.

Some people are interested in buying fuel system cleaners that you can pour into your gas tank. You can do that – and there are lots of great products available that can help maintain an already clean fuel system – but these products cannot do a major cleaning. For that, you need to see your service center at Hughes Automotive Inc. Hughes Automotive Inc has the professional tools and chemicals to really do a complete service.

Your service center at Hughes Automotive Inc in Eagle Lake MN uses a process that gives your car a deep, professional fuel system cleaning. You need to remove particles, gum and varnish from your fuel system and get those injectors running cleanly and efficiently. After a professional fuel system cleaning, you’ll notice more power, better fuel economy and reduced exhaust emissions.

The cleaners also help prevent rust and corrosion in your fuel system and lubricate vital engine parts.

Fuel system cleaning is just one of those recommended service items that helps keep your vehicle running strong. As with all maintenance, it can help avoid costly repairs that often result from not taking the right preventive steps. And you will notice the difference in how well your car runs. Check with your service advisor at Hughes Automotive Inc in Eagle Lake MN to see when your car is scheduled for a fuel system cleaning.

An ounce of prevention really is worth a pound of cure.

Today’s Hughes Automotive Inc auto maintenance article focuses on your serpentine belt. Your serpentine belt is a long belt that’s driven by your engine. It winds around several accessories that power important automotive systems. Let’s go over them.

First, the serpentine belt drives your sedan air conditioning system. It spins the compressor that makes the cool air that takes the edge off the summer heat in Mankato.

Next, the belt powers the alternator. The alternator creates electricity that’s used by your sedan’s electrical systems and also charges your car battery. All Mankato drivers know that without the alternator, the battery will go dead in a few miles.

The serpentine belt may also run the pumps for both the power steering and power brakes. And, on many sedans, the serpentine belt powers the water pump. The water pump circulates coolant through the engine to keep it within normal operating temperatures for Mankato car owners. (On some sedans, the water pump is powered by the timing belt instead of the serpentine belt.)

So you can see the serpentine belt does a lot of work. And it if breaks, it affects a lot of systems. That’s why auto makers and your service advisor at Hughes Automotive Inc have recommended that it be changed every so often so that it doesn’t fail.

Your Hughes Automotive Inc service advisor can perform a visual inspection of the belt to see if it has any cracks that signal the belt could fail soon and will measure the amount of belt material to make sure there is enough.

Your serpentine belt works in tandem with a spring loaded pulley attached to the engine called the tensioner pulley. Its job is to make sure there’s a constant tension on the serpentine belt so that it doesn’t slip. The spring can become worn and no longer provide the necessary pressure to keep the belt tight. At Hughes Automotive Inc, we recommend that the tensioner be replaced at the same time as the serpentine belt.

All in all, the serpentine belt’s a critical part for the function of your sedan. And it’s not that expensive to replace at Hughes Automotive Inc – so bring in your vehicle if it hasn’t been checked in a while.