Did you know that most of the cars driving around Chamblee Georgia carry more computer power than the Apollo 121 Lunar Module that landed on the moon in 1969?

New cars sold in the Atlanta area have as many as twelve networked computers and over five miles (eight kilometers) of wiring. In fact, for the last decade or so, auto computers have been controlling about 85 percent of your vehicle’s functions.

Cars have sensors for manifold air temperature, coolant temperature, manifold air pressure, airflow, throttle position, vehicle speed and oxygen content. All of this electronic wizardry is pretty complicated. So how do you know when there is a problem?

It’s simple; the Check Engine light comes on. The computer monitors all the sensors and uses that information to decide what to adjust such as the fuel mix, spark timing and idle speed. In addition, the computer monitors its own circuits. When it finds a fault, it turns on the Check Engine light and stores a trouble code in the computer.

It can be pretty disturbing when the Check Engine light comes on. We wonder just how urgent it is. Generally speaking, it is not critical like a temperature or oil pressure light. When you get one of those it means STOP NOW! When the Check Engine light shows up, you should come in to our service center at J&L Auto Service to find out what the matter is as soon as possible.

Since 1996, there has been a strong emissions control component to the Check Engine diagnostic. But if your Check Engine light flashes on and off, you know that it is more urgent and you need to get it checked immediately to prevent damage. You should slow down and avoid towing or heavy loads until you can get it checked out.

Your technician at J&L Auto Service has special diagnostic equipment that will retrieve the trouble code from the computer and help him determine what is wrong. From there, we can fix it and get you back on the road.

Stop by if you’re check engine light is on.

J&L Auto Service
3667 North Peachtree Road
Chamblee, Georgia 30341
770.457.4676

Today we want to talk about a very important system in our cars – the cooling system. It’s one of those things that you don’t give much thought to until it fails and then you’re stranded by the side of the road.

Cooling systems fail more often than any other mechanical system – usually because of neglect. Don’t you hate it when something breaks, and you could have done something to prevent it?

The good news is that if you take care of your cooling system it can keep working for the life of your car.

Here at AutoNetTV, we emphasize preventive maintenance services like replacing your coolant according to the factory schedule. But the various parts that make up the cooling system need attention too. The major components of the cooling system are the water pump, freeze plugs, the thermostat, the radiator, cooling fans, the heater core, the pressure cap, the overflow tank and the hoses.

It sounds complicated, but we don’t have to be experts – we can leave that to our friendly service technicians at J&L Auto Service. But, having an overview will help us remember to take care of our cooling systems.

Most people would be surprised to know that burning fuel in your engine produces up to 4,500 degrees of heat. And all that heat has to be dealt with. If the heat can’t be drawn off the engine, the pistons will literally weld themselves to the inside of the cylinders – then you just have to throw the engine away and get a new one. That would cost thousands of dollars.

Now the water pump is what forces the coolant through passages in the engine to absorb heat. The pump is driven by a belt that needs replacement from time to time. And the water pump will eventually wear out and need to be replaced. Spending some money on replacing the belts and water pump is much less than the cost of repairing the massive damage that can be done when an engine seizes.

There’s another little part of the coolant system that protects the engine. It’s called a freeze plug. If you remember from high school chemistry, water expands when it freezes. In very cold areas, the coolant can actually freeze when the vehicle is left sitting.

It is hard to believe, but the expanding frozen coolant can actually crack the engine block. The freeze plugs fit into the engine block. They fit tight enough to withstand the pressure of a running engine, but can expand or pop out if the coolant freezes. These little things save a lot of engine blocks.

That brings up a good point. An engine has to work in all kinds of temperatures – extremely hot as well as very cold. How does the cooling system adapt to external temperatures as well as varying operating conditions?

Well, it’s much like the way you keep your house at a comfortable temperature all year round – with a thermostat. The thermostat in your car controls how much coolant flows through your engine. When the engine is cold, it restricts coolant flow until the engine comes up to an efficient operating temperature. Then it starts opening up to move more coolant to keep the temperature within a specified range.

The thermostat needs to be replaced from time to time as well. It’s easy to diagnose a failed thermostat and is fairly inexpensive to replace. We can do this for you at J&L Auto Service in Chamblee, just give us a call: 770-457-4676. Now we’ve been talking about all this heat we’ve got to get rid of, but haven’t really talked about where it goes. That’s where the radiator comes in. The hot coolant passes through the radiator. Air flows past the cooling fins and cools the coolant.

The radiator has two tanks that hold coolant: sometimes one the top and bottom or one on either side. If you have an automatic transmission, one of the tanks will also contain a second tank that cools the transmission fluid. Large SUV’s and trucks often have a separate transmission cooler. So when you drive around Chamblee, the air is forced past the radiator. But driving doesn’t produce enough air flow. So the radiator has cooling fans that force fresh air over the radiator. These fans may be powered by a belt or by electric motors.

Now, you also have something called a heater core. The heater core is like a mini radiator. A small fan blows air over the heater core and into the passenger compartment of your vehicle. That’s how you warm your car when it’s cold out.

Next is the radiator cap. With most newer cars around Chamblee, you never remove the radiator cap, except to replace it. You add coolant through the overflow tank. The radiator cap is also called a pressure cap, because its job is to maintain pressure in the cooling system.

High pressure raises the boiling point of the coolant, so it cools more effectively even in very demanding conditions. That is why you need to replace the cap from time to time. They recommend changing it out every time you replace your coolant.

Coming back to the overflow tank, it is needed because when the coolant gets hot it expands and the overflow holds the extra volume. The tank helps maintain the proper level of coolant and keeps air out of the system. You should never open the radiator cap or over flow tank when the engine is hot. This could lead to serious burns.

What else do we need to do to keep our cooling systems working well? Well, there are the hoses that hook all of these pieces together. They’re obviously very tough to deal with the pressure and high temperatures. But they do get worn. Sometimes they get spongy from the heat. Sometimes they lose their connection to the radiator, water pump, etc. It’s a great idea to have your Chamblee service center inspect your hoses at least once a year and replace them, if needed, before they break.

J&L Auto Service can help you check your cooling system and make any necessary adjustments or repairs. Give us a call at 770-457-4676.

Nothing in your engine workers harder than your oil. With hundreds of moving parts, and thousands of explosions every minute, it’s no wonder that engine oil needs to be changed frequently!

You’ve probably heard the old rule of thumb: Change your oil every 3,000 miles/ 5,000 kilometers or 3 months, whichever comes first. But some car manufacturers have introduced extended oil change intervals. They figure that a modern vehicle driven under the right conditions can go for 5,000 miles/8000 kilometers or more between an oil change.

The key phrase here is “under the right conditions”. If you look at your owner’s manual, you’ll see two different maintenance schedules: one for “normal” driving conditions and one for “Severe Service”. Severe service driving conditions include stop and go, short trips, towing, hauling, hot, cold, and dusty driving. That’s why at AutoNetTV we often refer you to the severe service schedule in your owners’ manual, because, for most of us Georgia car owners, that’s the way we use our vehicles in everyday life.

Recently, four of the largest auto manufacturers in the world have extended engine warranty coverage for engine damage caused by oil sludge resulting from longer oil change intervals. They found that real-world conditions require more frequent oil changes than the 7,500mi/12,000 km interval they were recommending. They subsequently recommended more frequent oil change intervals and proof of timely oil changes in order to qualify for the extended warranty.

Oil sludge is the culprit. Sludge is oil that has turned to a thick, jelly-like consistency. Sludge can block passages in the engine, preventing oil from lubricating vital engine parts. Parts wear more quickly and may fail prematurely.

Sludge is caused by several factors. The first one is simply – time. The engine oil is contaminated by exhaust gas that eventually leads to sludge. That is where the recommendation to change your oil at least every three months comes from. Sludge can also come from oil that gets contaminated by water from normal condensation. A few minutes of driving at Georgia freeway speeds allows the oil to heat up enough for the water to evaporate. The problem is we often run errands or take other short trips that don’t allow the engine to warm up enough for the water to evaporate. This is especially true in winter. Sludge also forms when the engine gets too hot, causing the oil to breakdown. Stop and go summer driving, towing and hauling are all prime conditions for creating harmful sludge. And every engine has hot spots that create sludge.

Given all of these factors, estimating when to change your oil is pretty complicated. A couple of manufacturers have computer programs built into their vehicles that record the number of cold starts, how many times the cylinders fire, engine temperature and other factors. From that, the computer estimates when you should change your oil and flashes a warning. But what if you do not have a vehicle with this feature? How do you know when to change your oil? We’re not sure you really can. Which is why it is better to be safe than sorry. 3,000 mi/5,000 km or three months – whichever comes first – talk with a service advisor at J&L Auto Service in Chamblee and see if that’s a good recommendation for the way you drive.

Flats, blow outs, skids and longer stopping distances can all be the result of Chamblee folks driving around on under-inflated tires. Now, it’s hard to tell when a radial tire is under-inflated. If your manufacturer recommends 35 pounds of pressure, your sedan tire’s considered significantly under inflated at 26 pounds. The tire may not look low until it gets below 20 pounds.

New laws required manufacturers to include a Tire Pressure Monitoring System – or TPMS system – in all cars and light trucks by the 2008 model year. The system has a dashboard mounted warning light that goes off if one or more of the tires falls 25% below manufacturer’s pressure recommendations.

This technology has been used by Chamblee race car drivers for years. They are able to head off problems from under inflation by closely monitoring tire pressure on the track. It’s up to your car’s manufacturer to determine which of many TPMS systems available they’ll use to comply with the law.

Obviously, all of this doesn’t come free for Chamblee drivers. U.S. government studies have estimated the net costs. Of course, the TPMS system itself will cost something. Maintaining the system will have a cost, replacement of worn or broken parts and tire repair cost increases.

The costs are partially offset by savings in fuel and tire wear. There’s also a saving in property damage and travel delay. The net cost is estimated to be between $27 and $100. The government predicts fewer fatal accidents. They estimate that it will cost between three and nine million dollars for every life saved.

Your safety has always been a concern at J&L Auto Service. We want you on the road and accident free. We’ve traditionally provided things like tire rotations, snow tire mounting and flat fixes at a very low cost. We’ve been able to quickly and cheaply provide the service, and pass the low cost on to you as an expression of our good will.

That’s why we’re concerned about how you’ll perceive the changes that this new law will force. Every time a tire is changed: taken off to fix a flat, a new tire installed, a snow tire mounted; the J&L Auto Service service technician is now going to have to deal with the TPMS system.

Even a simple tire rotation will require that the monitor be reprogrammed to the new location of each tire. When a car battery is disconnected, the TPMS system will need to be reprogrammed. TPMS sensor batteries will need to be changed and failed parts replaced.

Like all other Chamblee service centers, here at J&L Auto Service we’ve had to purchase new scanning equipment to work with the TPMS sensors and to update expensive tire change equipment to better service wheels equipped with the new monitoring systems. Our J&L Auto Service service technicians have been thoroughly trained on many systems and new tire-changing techniques. All of this adds up to significantly increased cost to perform what was once a very inexpensive service for you.

So when you start so see the cost of tire changes, flat repairs and rotations going up at J&L Auto Service, please keep in mind that it’s because of government mandated safety equipment. We want to keep you safely on the road – and we’re committed to doing it at a fair price. This new safety equipment will help you avoid the most common types of vehicle failure in Chamblee, and possibly a catastrophic accident.

Your car is important to you and keeping it running is vital to your Chamblee lifestyle. That’s why you should have it serviced regularly at J&L Auto Service. And even though it may just be routine maintenance, you want it done right.

It’s also very important to your Chamblee service center to keep you happy and on the road. You might be surprised at the amount of money our Chamblee service center spends every year to make sure our technicians are properly trained.

J&L Auto Service offers a variety of car care services to many kinds of vehicles. We need to be up to date on the latest techniques and parts so that they can care for your car properly. Our Chamblee centers subscribe to data services that list the high quality parts and fluids recommended by your manufacturer.

And each service has a checklist of standard procedures. J&L Auto Service technicians follow these procedures so they can safely deliver a consistent level of high-quality service.

Some services require the use of specialized equipment. J&L Auto Service technicians are trained extensively on this equipment so that they can service your car quickly and efficiently.

Classroom, video and hands-on training is provided by the company and outside trainers. It’s not only important that service technicians be able to perform a given task, they also need to be thoroughly trained in inspection and diagnostic techniques. One of the great services they perform is to spot potential problems before they become serious.

The automotive service industry has standards for classifying and communicating problems to customers. For example, it’s one thing to learn that your manufacturer recommends that you change your serpentine belt every 30,000 miles and another to learn that the belt is on the verge of failure. These standards help you understand the urgency of recommendations, letting you make better service decisions.

You may be interested to know that service technicians are trained in compliance with federal and local Chamblee laws and regulations, including environmental regulations regarding the disposal of used parts and fluids.

It’s the goal of our Chamblee service center to provide fast, courteous service. You should feel free to ask your technician or one of the managers about your service or for more information about their recommendations.

Well-trained service providers, established procedures, industry standards, and, of course, AutoNetTV, combine to give you the best service experience possible.

How do you know if an odometer is telling the truth?

Well, back in ’86, Congress passed the Truth-in-Mileage Act to protect Georgia consumers against mileage fraud. It says a Georgia seller must certify the mileage reported is the Actual Mileage.

To have your odometer checked in Chamblee Georgia, stop by J&L Auto Service:

J&L Auto Service
3667 North Peachtree Road
Chamblee, Georgia 30341
770-457-4676

If it isn’t, the seller must say why; like maybe the odometer is past its mechanical limits. Some older odometers only go to 99,999 miles and then start over at 0. Or, the odometer has been tampered with, broken or replaced.

If the seller tells you the mileage isn’t accurate, there’s not much chance of putting a good number to it; And there’s the unscrupulous seller who claims the reading is true, but it’s not so. What can you do?

First, you can go to www.CarFax.com, where for a small fee, they’ll give you a comprehensive vehicle history search on your sedan, showing local Chamblee Georgia ownership history, accident reports, total-loss events, Manufacturer buybacks, Lemon reports and warranty status.

You can get a mileage history by checking with the local Chamblee Georgia DMV (or wherever you happen to be) and other verified sources looking for inconsistencies in the mileage reported when the car’s bought and sold. If there are signs odometer rollback, now you’ll now.

If so, proceed with caution. Or, negotiate a lower price. Or just walk away. There’s always another.

People in Chamblee Georgia often ask the question: “Will using premium gas make my car run better?” The answer is simple. But first, let’s talk about what exactly premium gasoline is.

Different grades of gasoline have different octane ratings. Regular gasoline has the lowest octane rating and premium the highest. Most gas stations around Chamblee Georgia also carry a mid-grade that falls in between the two. The octane range for the different grades of gas varies by region due to altitude differences.

Engines require different octane ratings because of design differences. For example, turbocharged engines usually require premium gas.

There’s a sticker on your gas tank filler lid that tells you the minimum octane rating your manufacturer recommends.

For help identifying the type of gasoline your engine needs, come by our Chamblee Georgia service center:
J&L Auto Service
3667 North Peachtree Road
Chamblee, Georgia 30341
770-457-4676

Read your owner’s manual carefully to see if it’s acceptable to use lower grades. With some cars in Chamblee Georgia it is; the engine control computer can adapt. You’ll lose some performance, but won’t do damage. With other engines, using a lower grade of fuel could result in serious damage; so you don’t want to save a couple of bucks at the pump only to pay it out a hundred fold at the repair shop.

Your car will run best on the grade of gasoline recommended by the manufacturer.

Today’s computer controlled vehicles are optimized to run well on the recommended grade of fuel. Using a higher grade than is recommended will not give you any additional performance or better fuel economy.

Regulations require detergents for all grades of gasoline, so your engine will have the same protection, regardless of the grade of fuel you use. If you do hear some knocking or pinging from your engine, take it seriously and get your sedan into J&L Auto Service. It may be a sign that you need a tune-up or some other repair.

In times of high gas prices, we’re all conscious of making our fuel dollar go further as we drive around Chamblee Georgia. Be sure to use the right gas for your car. Keep your tires properly inflated and your vehicle well maintained and you will get the best fuel economy possible.

Everyone in Chamblee Georgia has blind spots – and no, I’m not talking about the fact that you really don’t sing like Jessica Simpson. I mean the areas of the road that you can’t see when you’re driving around Chamblee.

First let’s talk about our own blinds spots, and then we can talk about others…

To begin, we can greatly reduce our blind spots by properly adjusting our mirrors to give the widest coverage possible. Make the adjustments in your sedan before you start to drive.

First, adjust your rear view mirror to give the best possible view directly to the rear of your car. You don’t need it to get a better view of either side of the car, the kids in the back seat or your dazzling smile. The rear view mirror should look to the rear.

Next, lean your head until it almost touches the driver’s side window. Adjust your side mirror so that you can just barely see the side of your car.

J&L Auto Service
We’re on 3667 North Peachtree Road in Chamblee, Georgia (30341)
Call us to make an appointment at 770.457.4676 .

Now, lean your head to the middle of the car and adjust the outside mirror so that you can barely see the right side of the car.

With your mirrors adjusted this way, you’ll have maximum coverage. Of course driving is a dynamic process – things change every second. So it’s wise to take a quick look to the side when passing to make sure that another vehicle hasn’t moved into an area you couldn’t see in your mirrors.

Depending on the kind of vehicle you drive (sedan?), you may still have some blind spots. All vehicles have an area behind them that’s blind when backing up. The bigger the vehicle, the bigger the blind spot. A pick up or SUV can hide a small child – an RV, bus or tractor-trailer can hide an entire vehicle. So be careful around our Chamblee streets!

As you drive around the Atlanta area, avoid staying in other diver’s blind spots. You can’t count on them to be watching their mirrors and looking out for you.

Let’s talk about safely sharing the road with heavy trucks and buses. In crashes involving a truck and car, the car causes about 40 percent of the accidents. But 78 percent of the fatalities are with the car. The laws of physics are against the smaller vehicle, so it pays to take extra precautions around trucks and buses.

Heavy vehicles have huge blind spots: to the rear, on both sides and up front. They also can’t maneuver like a car. They take twice as long to stop and need twice as much space as you do in your sedan or other type of car. You need to keep wide margins when driving around one of these big rigs.

Here are some tips for passing a heavy vehicle in the Atlanta area:

• Avoid the blind spots. If you can’t see the driver’s face in one of his mirrors or in a window, he cannot see you!
• Don’t follow too close. If you can’t see one of the truck’s mirrors, you’re too close.
• Make sure there is plenty of room to pass. Trucks are long and take time to get around. If you’re on one of our local Chamblee Georgia two way highways, wait for a passing zone.
• Don’t linger when passing. Because the blind spots are so big on the sides, you want to get through them quickly. If you can’t pass quickly, drop back.
• Pass on the left whenever possible. A trucks’ blind spot is much larger on the right.
• Be attentive and wear your seat belts while driving anywhere around Chamblee, even short drives.
• Don’t be aggressive when driving around trucks. Because of their size, they appear to be going slower than they really are. Cutting it short around a truck could be disastrous.
• Use your turn signals when starting to pass. Once you can see the full truck in your rear view mirror, it’s safe to signal and move over. Don’t cut it short or slow quickly when you pull in front of a truck.
• Be careful passing a truck at an intersection. Trucks need to turn wide to maneuver through city streets. Squeezing between a truck and the curb could put your car in the Chamblee body shop. Look for the truck’s turn signals.

We at J&L Auto Service want you to watch those blind spots – but feel free to sing in the shower all you want.

If the fuel system in your sedan is dirty, you will be wasting gas and losing performance as you drive around Chamblee Georgia.

Unless you drive a vintage car, you have fuel injectors. They need to be properly maintained. That is why your owner’s manual has a schedule for cleaning your fuel injectors and other parts of your fuel system.

Your service technician at J&L Auto Service has the tools and chemicals to do the job right. J&L Auto Service uses a process that gives your car a deep, professional fuel system cleaning. The particles, gum and varnish that build up in your fuel system are removed so that it can run cleanly and efficiently.

After a professional fuel system cleaning, you’ll notice more power, better gas mileage and reduced exhaust emissions. AutoNetTV strongly recommends you follow your manufacturer’s fuel system cleaning service recommendations to keep your vehicle running strong.

It’s expensive to replace a fuel injector that’s been damaged by neglect. Check with your service technician at J&L Auto Service and see when your car is scheduled for a fuel system cleaning.

Today’s J&L Auto Service 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 Atlanta.

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 Atlanta 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 as you drive around Atlanta.

Now 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 manufacturers and your service advisor at J&L Auto Service have recommended that it be changed every so often so that it doesn’t fail.

Your Atlanta service technician 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.

There’s a special, 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 J&L Auto Service, we recommend that the tensioner be replaced at the same time as the serpentine belt.

All in all, the serpentine belt’s an important part for the function of your sedan. And it’s not that expensive to replace in Atlanta – so it’s good to do so before it fails.