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 understanding service technicians at Purrfect 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 Purrfect Auto Service in Tustin, just give us a call: 949-653-0100. 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 Tustin, 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 Tustin, 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 Tustin service center inspect your hoses at least once a year and replace them, if needed, before they break.

Purrfect Auto Service can help you check your cooling system and make any necessary adjustments or repairs. Give us a call at 949-653-0100.

Have you ever had an experience like this in Tustin CA? You drive through the one of those automatic car washes. When you get to the end, where the dryer is blowing, your check engine light started flashing!

You fear the worst, but within a block or two, the light stopped flashing, but stayed on. By the next day, the light was off.

You wonder; “What was going on?” Well, it’s actually a good lesson in how the Check Engine light works.

Your air intake system has a sensor that measures how much air is coming through it. When you went under the high-speed dryer, all that air was blasting past the sensor. Your engine computer was saying, there shouldn’t be that much air when the engine is just idling. Something’s wrong. Whatever’s wrong could cause some serious engine damage.

Warning, warning! It flashes the check engine light, to alert you to take immediate action.

It stopped flashing because once you were out from under the dryer, the airflow returned to normal. Now the engine control computer says the danger is past, but I’m still concerned, I’ll keep this light on for now.

Then the Check Engine Light goes off in a day or two.

The condition never did recur, so the computer says whatever it was, it’s gone now. The danger is past, I’ll turn that light off.

Now a flashing check engine light is serious. You need to get it into our Tustin CA shop as soon as possible. But if it stops flashing, so you have time to see if the problem will clear itself or if you need to get it checked. How does the computer know when to clear itself?

Think of it this way. The engine control computer is the brain that can make adjustments to manage the engine. Things like alter the air to fuel mix, spark advance, and so on. The computer relies on a series of sensors to get the information it needs to make decisions on what to do.

The computer knows what readings are in a normal range for various conditions. Get out of range, and it logs a trouble code and lights up the check engine warning.

The computer will then try to make adjustments if it can. If the computer can’t compensate for the problem, the check engine light stays on.

The computer logs a trouble code. Some people think the code will tell the technician exactly what’s wrong?

Actually, the code will tell the technician what sensor reading is out of parameters. It can’t really tell you why, because there could be any number of causes.

Let’s say you’re feeling hot. You get your heat sensor out – a thermometer – put it under our tongue and in a minute or two you learn that you have a fever of 104 degrees.

You know your symptom – a fever – but you don’t know what’s causing it. Is it the flu, a sinus infection or appendicitis?

You need more information than just that one sensor reading. But it does give you a place to start and narrows down the possible problems.

There are reports on the internet telling you that you can just go down to an auto parts store and get them to read your trouble code or buy a cheap scan tool to do it yourself.

There are two problems with that. First, the computer stores some trouble codes in short term memory, and some in permanent memory. Each manufacturer’s computer stores generic trouble codes, but they also store codes that are specific to their brand.

A cheap, generic scan tool, like you can buy or that the auto parts store uses, doesn’t have the ability to retrieve long-term storage or manufacturer specific codes. Your Tustin CA service center has spent a lot of money on high-end scan tools and software to do a deep retrieval of information from your engine control computer.

The second problem is that once you’ve got the information, do you know what to do with it? For example, a very common trouble code comes up when the reading on the oxygen sensor is out of whack.

So the common solution is for the auto parts store to sell you a new oxygen sensor, which are not cheap, and send you off on your way. Now your oxygen sensor may indeed have been bad and needed replacing. But the error code could have come from any of a dozen of other problems.

How do you know the right solution? Back to the fever analogy, do you need surgery or an aspirin? Leave it to the pros at Purrfect Auto Service. Give us a call at 949-653-0100 and let us help you resolve your check engine light issue.

All pilots have checklists for every aspect of flying. They always use their checklists even if they only have two steps on them. They do this simply because a checklist is a great way to not forget important steps. It is also how you can assure a predictable outcome.

That is why Orange and Tustin automotive service centers have procedural standards for each service they perform. Technicians are trained step by step. And they perform the procedures step by step, the same way each time. By training to procedural standards, centers can assure a quality outcome. The job is done right every time and you are happy with how your car performs.

Each company trains its technicians to standards. The industry as a whole is very committed to standards of excellence and encourages individual service center operators to apply them to every vehicle they service.

An example is how service technicians grade problems and communicate their recommendations. If a technician tells you that a repair or replacement is required it must meet the following criteria:

1. The part no longer performs its intended purpose
2. The part does not meet a design specification
3. The part is missing

The technician may suggest repair or replacement if:

1. The part is close to the end of its useful life – just above discard specifications or likely to fail soon
2. To address a customer need or request – like for better ride or increased performance
3. To comply with maintenance recommended by the vehicle’s manufacturer
4. Based on the technician’s informed experience

Here are some examples:

An exhaust pipe has rusted through and is leaking. Replacement is required because the part has failed. If the pipe were rusted, corroded or weak, but not leaking, the technician may suggest it be replaced because it is near the end of its useful life and replacing it now may be more convenient for the customer.

Suppose a customer wants to improve his car’s handling, but his shocks haven’t failed. The technician may suggest replacement of the shocks to satisfy the customer’s wishes.

Under these guidelines the service center must refuse partial service of a required repair if the repair creates or continues an unsafe condition. Let’s say a customer has a cracked brake rotor. This is a dangerous condition that must be repaired. If the customer does not want to replace the rotor, but instead just wants new brake pads installed, the shop must ethically refuse the partial repair. That can be an upsetting conversation, but understanding that service centers operate under service standards and procedures is comforting. You want your service to be done right and to have confidence in your technician’s recommendations.

The automotive service industry and Purrfect Auto Service want the best for you and for you to keep coming back. AutoNetTV is committed to providing automotive maintenance information to help you be confident in your service decisions.

Our cars have to operate in a wide range of Tustin, CA temperatures and our engine coolant must be able to perform ‘no matter what’. Think for a moment about the environment where the coolant works. Very hot, high pressure, corrosive…

And all the while, it has to protect the components of the cooling system from corrosion. These components are made from steel and aluminum, plastics and rubber. The coolant has to be formulated to protect against corrosion for all of these different materials. That’s why different manufacturers recommend different types of anti-freeze for our Tustin, CA vehicles.

There are several different ‘families’ of anti-freeze available to us here in Tustin, CA. Your owners’ manual will tell you what kind you should use. Of course, Purrfect Auto Service will know what to put in your car.

It’s important to stay on top of this because coolant system failure is the most common mechanical problem people have here in Tustin, CA. Regular service at Purrfect Auto Service needs to be done to avoid failures and also to keep your warranty in place.

While the specifics of the service required may vary from vehicle to vehicle, your service consultant at Purrfect Auto Service will know what to do. You’ll be advised to replace the coolant at specified intervals.

Some manufacturers may recommend periodic coolant system flushes. A flush adds a cleaning step to the fluid replacement process. Again, check to see what your service consultant recommends.

Someday, you may have to deal with an overheating problem, so you need to know what to do if your coolant temperature warning light comes on or your temperature gauge is in the hot zone.

Now, overheating can be very expensive. You can literally melt down your engine and have to replace the whole thing. So take the warning signs seriously and take immediate steps.

First turn off the air conditioner. This will lower engine temperature right away. Next turn your heater to maximum heat and run the fan at high speed. You might need to roll down the windows, but this will take a lot of heat off the engine.

Pull over as soon as you can safely do so, especially if you are stuck in slow-moving traffic, and shut the car off. It may take as much as 45 minutes for the engine to cool to the point that it’s safe to operate the car again.

If you need to add water or antifreeze, be sure to wait until the car cools down. Opening the radiator cap or even the overflow bottle when the coolant is hot and under pressure may result in serious burns.

So after the engine has cooled for 45 minutes or so, look to see if the coolant is low in the overflow tank. If so, you can cover the overflow tank cap with a large cloth and open the lid. Then start the engine and pour in some water or antifreeze. Pouring it in when the car is running will circulate the new, cool fluid with the warmer fluid in the engine and avoid engine damage.

Of course, overheating is a serious problem and you need to get it fixed right away. Purrfect Auto Service can make sure the coolant is right before you drive home.

Those spring and winter inspections really come in handy when they head off a cooling system problem. And don’t forget that severe service driving conditions, like towing or hot, dusty driving around Tustin, CA, mean that you’ll need to service your coolant more frequently.

At AutoNetTV, we suggest that you have Purrfect Auto Service inspect your coolant system to find small problems before they become big, and to change belts and hoses before they fail. After all, we don’t want you to lose your cool out there in Tustin, CA.

Everyone in Tustin CA 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 Tustin.

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.

Purrfect Auto Service
We’re on 3075 Edinger Ave in Tustin, CA (92780)
Call us to make an appointment at 949-653-0100.

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 Tustin streets!

As you drive around the Irvine 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 Irvine 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 Tustin CA 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 Tustin, 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 Tustin body shop. Look for the truck’s turn signals.

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

Here at Purrfect Auto, we believe in doing business the right way. We will always act with integrity, our reputation and the trust you have in us is much more important than trying a make a couple of quick bucks. We’ve been serving the Tustin and Irvine communities for over 15 years and we plan to be here for many more.

Here are 3 things we do, so you can feel comfortable using our establishment.

1. At your request(and sometimes at our behest) we will take you out to your vehicle while it is still on the lift and show you exactly what is wrong with the car. We’ll show you the problem and explain the solution so you clearly know the what and why of the recommendation.

2. We double the manufacturer’s warranty on most repairs. We are putting our money on the line that the repair we are doing is being done and done right because if it isn’t you’ll be back and we’ll be re-doing the work for free.

3. We are members of the Better Business Bureau and local Chambers of Commerce. We are active members of the community and we exist because customers keep coming back to us, knowing that we will stand behind our work.

There’s not much we can do about the price of gas in Tustin CA, but we do quite a bit about how much we use as we’re driving on our Tustin streets.

Our driving habits can dramatically affect our fuel economy.

The first thing we can do is watch the ‘go-pedal’. Hard acceleration just sucks the gas. Gently leave stop lights and plan lane changes so you don’t need to floor it. That can save you hundreds of dollars a year.

Go a little slower on the freeway to Irvine. Once you’re going more than sixty-five miles an hour your fuel economy starts to drop dramatically. Leave early so you don’t need to rush to be on time. And cruise control is your friend – steady speed uses less gas.

Plan errands ahead. Make fewer trips by combining errands.

Hey at current gas prices, a lead-foot might as well be a gold foot.

Purrfect Auto Service
3075 Edinger Ave
Tustin, CA 92780
626-826-8198

Safety Tips
Slow down if you have to go over a pothole or other object in the road.
Do not run over curbs, and try not to strike the curb when parking.

Remember to check your tires once a month!

NHTSI Tire Safety Brochure

Welcome to the Purrfect Auto Service blog. Today, let’s talk about the effect of tire tread depth on braking. When talking about stopping power, most of us Santa Ana drivers tend to focus on our brakes. But our tires are where the rubber meets the road. So having good brakes isn’t enough. Safe Santa Ana drivers need to have tires with enough traction to translate braking power into stopping power.

Let’s focus on stopping in wet Santa Ana conditions. In order for a tire to have good contact with the road, it has to move the water out of the way. If it can’t move the water, the tire will actually ride on top of a thin film of water.

That’s called hydroplaning. If it’s really bad, Santa Ana drivers can actually spin out of control. At best, you won’t stop as fast.

So how does a tire move water? It has channels for water to flow through. Look at your sedan tire and you’ll see channels: channels that run around the tire and channels that flow across the tire. They’re designed to direct water away from the tire so it can contact the road better.

And the deeper the channel, the more water it can move. A brand new Purrfect Auto Service tire has very deep channels and can easily move a lot of water. As the tire wears down, the channels become shallower and can move less water. When it wears down enough, it can seriously affect your ability to stop your sedan on wet Santa Ana roads.

So that’s why it’s so important to replace our sedan tires when they get worn. Consumer Reports and other advocate groups call for a standard of 3/32 of an inch and they have the studies to prove it.

By comparison, you’ve probably seen the wear indicator that’s molded into tires. When tires are worn 3/32 of an inch, the tread wear bar is visible. So the recommended standard has twice the tread depth as a completely worn out sedan tire.

At Purrfect Auto Service, we want our customers to know that the deeper recommended tread depth makes a big difference. Stopping distances are cut dramatically on wet Santa Ana roads. A safe stop from CA freeway speeds with 4/32 of an inch of tread would result in a crash with worn out tires.

There’s an easy way to tell when a tire’s worn to 4/32 of an inch. Just insert a quarter into the tread. Put it in upside down. If the tread doesn’t cover George Washington’s hairline, it’s time to replace your sedan tires. With a Canadian quarter, the tread should cover the numbers in the year stamp.

Many Santa Ana car owners have heard of this technique using a penny and Abe Lincoln’s head. That measure gives you 2/32 of an inch – half the suggested amount. Of course, sedan tires are a big ticket item. Most of us in Santa Ana want to get as many miles out of them as we can. But there’s a real safety trade-off. It’s your choice.

In very simple terms, a fuel injector is a valve that squirts fuel into your SUV engine. Your engine control computer tells the fuel injector how much fuel to deliver as well as the precise time it should be delivered. Of course this happens thousands of times a minute in every single fuel-injected car driving down Corona Del Mar, Costa Mesa, and Huntington Beach roads.

Most fuel injectors for gas engines are known in the Irvine auto industry as port fuel injectors because they deliver the fuel to a port just outside the cylinder. The fuel pump provides pressure needed to squirt the right amount of fuel into the engine.

A few auto makers have recently introduced gas direct injection systems on some engines. They are now available at some Irvine dealerships. These systems inject the gas directly into the cylinders under very high pressure – many times the pressure of port injection systems.

Although more complicated, direct injection technology promises greater power with improved fuel economy for gas-poor Corona Del Mar, Costa Mesa, and Huntington Beach commuters. CA motorists can expect to see more of it in the future.

High temperatures under your SUV hood and variations in Irvine gas quality cause fuel injectors to be fouled with wax, dirt, water, additives and carbon. Injectors can become partially clogged, preventing them from delivering the proper amount of fuel at the correct pressure.

When injectors are dirty, the fuel doesn’t burn as efficiently resulting in poor fuel economy and loss of power. So it’s important for Tustin drivers keep their fuel injectors clean.

Your Tustin Purrfect Auto Service service center can perform a fuel system service for you in which the fuel injectors are cleaned so that they operate properly and deliver the right amount of fuel at the right time.

Proper maintenance of your SUV fuel system means that you will spend less on gas, enjoy strong performance and prevent costly Irvine repair bills down the road.