Los Altos Auto Repair

Since driving requirements and lifestyles differ among Los Altos motorists, sedan manufacturers publish two auto maintenance schedules: the regular schedule and the severe service schedule. Which schedule should you follow?
Here are some questions to ask yourself:  Says Cayenne.

Are most of your trips less than four miles?  Getting dog biscuits and such.
Are most of your trips less than 10 miles in below-zero CA temps?
Are most of your trips off-highway?  Yes full freedom for us dogs to run.
Do you drive often in dusty areas?
Do you regularly tow a trailer or carry heavy loads around Los Altos?
Do you drive in very hot or very cold CA weather?

Cayenne wants you to think about your typical week. Do you live by your nearest Los Altos freeway on-ramp and enjoy a non-stop commute to Los Altos or Cupertino? Or, do you drive the neighborhood car pool or to your local pet store in stop-and-go traffic on surface streets?

Take a look at your owner's manaual says Cayenne and suppose your owner’s manual says the severe service oil change recommendation is 3,000 miles and the standard recommendation is 5,000 miles. You know that you need to change the oil somewhere between 3,000 and 5,000 miles. Analyze your driving patterns and Los Altos weather and road conditions to determine which end of the spectrum you’re closer to.

Why should Los Altos auto owners care about this? Normal condensation causes moisture accumulation in the engine oil. Short trips around Los Altos or winter driving means that the engine doesn’t heat up enough for the moisture to evaporate. The water in the oil turns to oil sludge that clogs up your engine and doesn’t let the oil protect it adequately. That’s why CA drivers need to change their oil more often – to clean the sludge out before it causes problems.

Carrying heavy loads like dog kibble (with or without a trailer) in nice CA summer weather causes your engine and transmission to run at higher temperatures and with more stress. The fluids will break down more quickly. Additives that clean and prevent corrosion will be depleted sooner. Air pollution and dust cause fluids to get dirty faster. Ditto for filters. All of these things can lead to premature wear and eventual repairs, not to mention your gas mileage. If you want some expert advice,Cayenne suggests you talk with your personal and trusted Allied Auto Works advisor. We can help you restore your sedan to good working order and help you know the best schedule to follow.

To learn more, watch our informative AutoNetTV auto video tips at the top of this post.  Thanks again for checking in with me.  

Allied Auto Works
650.968.7227
2073 Grant Road
Los Altos, CA 94024

With the recent focus in Mt. View on improving fuel economy, Cayenne's knows how important it is to maintain our tire pressure.

Los Altos auto owners know that tires wear out, but Cayenne's wants to make them last as long as possible because they're not cheap to replace and she does not want you going into her bone money jar. In addition to saving gas, properly inflated tires last longer. Under-inflated tires will wear out more quickly, Cayenne says they could make a good chew toy.

Some Mt. View auto owners wonder if they should add a few extra pounds of pressure when they fill up their tires.  Cayenne barks "Bad idea!"  In fact, there are very good reasons not to over-inflate your tires. For one, the middle of the tread will wear unevenly because the full tread is not contacting the road properly. That also adversely affects your handling.

Stop by Allied Auto Works to see about tire maintenance for your Los Altos, CA vehicle Cayenne advises.

Allied Auto Works
2073 Grant Road  and 1540 Miramonte Ave.     
Los Altos, CA 94024
650.968.7227 or 650.947.7228

Every vehicle in the Mt. View area has a sticker on the driver's side door jamb that tells you the manufacturer's recommended tire pressure. This recommendation is an integral part of the vehicle's suspension tuning. A lot of engineering actually goes into the recommended tire pressure, so it's important for Mt. View auto owners to follow it.

What else do Los Altos car owners need to know about tire maintenance? Tire rotation and balancing are very important. Let's start with rotation. Because the front tires handle the brunt of turning forces, the shoulders of the front tires wear more quickly than the rear tires. Cayenne says rotate the tires so that they all get to do some duty on the front and they'll all wear evenly over their life.

For most vehicles, front tires are rotated to the rear and vice versa. Others recommend a cross rotational pattern. Some vehicles use an asymmetrical tire so those tires need to stay on either the right or left side – it'll say which on the tire. Some high performance cars have asymmetrical tires and different sizes on the front and rear. These can't be rotated at all. Your owner's manual will have details for your car.  Cayenne says make sure you check that manual.

How often should Los Altos drivers rotate their tires? Your owner's manual will have a recommendation. "My personal and trusted Allied Auto Works tech at  Allied Auto Works in Los Altos can do a visual inspection to let you know if it looks like it should be done. The interval is typically around 5,000 miles." barks Cayenne.

Cayenne barks, "You know, some Los Altos people don't think new tires need to be balanced. What they aren't taking into account is the wheel. Between the wheel and the tire – even a new tire – there's enough variation to require balancing." 

When you add the valve stem and tire pressure monitoring sensors required on new cars, balancing is definitely in order. When a tire's out of balance, it's actually hopping down the road. You'll feel the vibration through the steering wheel if a front tire's out of balance and through your seat if it's a rear tire.

Proper wheel balance promotes tire life and increases safet y says Cayenne. Historically, lead weights have been attached to the wheel to bring it into balance. Lead gives some environmental concern, so steel weights are starting to be substituted.

Also Cayenne mentions, always use the same size tire on an axle. Different size tires on the front or on the back can lead to some real handling problems. And tire manufacturers recommend that when you get two new tires, they be installed on the rear because that's where you need the most traction to avoid spinning-out.  Drive safely and have a great day!  

See you next week!  

Imagine you've left Los Altos and you're up in the arctic on a dog sled.   "It could happen." says Cayenne.

Your dog team is pulling straight and true. You can cover a lot of ground fast. Now imagine what would happen if one or two of the dogs wanted to go their own way and were pulling off to the side.

That would slow you down. You would have to work harder to keep the sled going where you want it. The dogs are all working as hard as before, but you're covering less ground for the same effort.

"You're wasting valuable kibble!" Cayenne barks.

The same is true of your vehicle when the wheels are out of alignment. That wheel that's pulling to the side is dragging down the rest of the car; so you push a little harder on the gas pedal to keep up your speed. You're wasting gas.

So have your wheel alignment checked at least once a year. Get it checked right away if you feel the car pulling to one side.

Sometimes we bump a curb or hit a pothole and knock our wheels out of alignment. An accident can take the wheels out of alignment as well.  Cayenne invites to schedule an appointment today if wheel alignment is an issue for you.  Because well you never know when you might have to drive to Alaska.

Allied Auto Works
2073 Grant Road
Los Altos, CA 94024
650.968.7227

So make sure you're tracking straight. You'll save gas and your tires'll last longer. Now, mush!

Cayenne wants to know if you have found yourself in the following situation: You go to get your oil changed and the service adviser at Allied Auto Works recommends you get a new engine air filter. You say yes, but because you didn't know what an air filter is or what it does, but you were too embarrassed to ask.

First of all Cayenne wants you to know, you did the right thing by getting a new one. And, you should never be too embarrassed to ask for more information from any of our Allied Auto Works staff. It's your money and you have a right to understand what you're paying for.

"Let's review what an air filter does" barks Cayenne:  

Air is the focus of this discussion. What is the air like outside in Los Altos right now? Can you see any smog? Is it full of pollen? How about dust? Anyone in CA with hay fever can tell you that there's plenty in the air that you can't see. Well, it's the engine air filter's job to clean that air before it goes into your engine, to mix with the fuel and be burned. Without an engine air filter, the inside of your engine would be extremely dirty from all the gunk that was burned in the cylinders.  

Allied Auto Works
2073 Grant Road
Los Altos, CA 94024
650.968.7227

In fact, for every gallon of gas you burn, your engine needs 12,000 gallons of air. That little filter does a very big job. It's no wonder that the air filter gets dirty and needs to be replaced. Think about a vacuum cleaner. When the bag gets full of dust and dirt, the vacuum doesn't clean as well. It can't move enough air to create good suction. A clogged engine air filter is the same way - the engine can't get enough air to burn the fuel efficiently. That means less power and wasted gas.

That's why your manufacturer has recommended that you change your filter at regular intervals. Of course the conditions you drive in will affect how quickly the filter gets dirty. If you drive where it's very dusty or where there's lots of pollen or pollution, you may need to change the filter sooner. The filter is easy to check visually, so your service technician can quickly make the call. He might recommend immediate replacement, or simply let you know that it is getting close and that you'll need to replace it soon - like at your next oil change.

Because a severely dirty air filter hurts your fuel economy, many people find that a new air filter pays for itself in gas savings before the next oil change. They also make premium air filters that have been proven to increase your horsepower and torque. If more power is important to you, a high performance air filter is some of the cheapest horsepower you can buy.

The better your car breathes, the better it runs - kind of like dogs and people. And don't worry - if you have a question or don't understand a recommendation just Cayenne or better yet stop by Allied Auto Works and talk to Matt or Travis.

Welcome to Cayenne's Weekly Blog. Before the recession hit, the median age for cars in the Los Altos CA area (zip code: 94024) was over nine years. And two-thirds had over 75,000 miles. Cayenne and  Allied Auto Works hear reports that those numbers continue to rise.

Cayenne recommends if you have a high-mileage vehicle in the Los Altos area, bring it in for high-mileage maintenance:
Allied Auto Works
2073 Grant Road
Los Altos, CA 94024
650.968.7227

Many people in Los Altos are keeping their vehicles longer. The economy has influenced that, but the fact that modern sedans are more durable and reliable means that owning a high mileage vehicle doesn't have to be a painful experience.

Local car owners in Los Altos with over 100,000 miles on their vehicles often ask Cayenne which service intervals they should follow. Cayenne's advice starts with the special needs of the older vehicle...

The reality is that time and mileage will take its toll. The engine and transmission will have more sludge. The fuel, steering and brake systems will have gum and varnish built up. There'll be more dirt and contaminants in the fuel tank. Corrosion and deposits in the cooling system. And seals and gaskets will start to dry out.

All of this, plus normal wear and tear, means that the engine might not be as strong as new, so it just has to work harder to get the job done.

So we need to compensate. Consider high-mileage formulations for oil changes, transmission service, etc. These special formulations contain additives that condition the seals and gaskets to prevent leaks. They also have more detergents to clean sludge and other deposits. They cost a bit more, but they're worth it.

In general, if an auto service was recommended every 15,000 miles when the car was new, you should continue to get the service done every 15,000 miles.

Cayenne recommends talking with your Los Altos service advisor at Allied Auto Works about the condition of your engine. See if he thinks you should adjust your auto service intervals for oil changes or other auto maintenance to account for the older engine working harder.

Expect the oil filter to get dirty faster. Same goes for the fuel filter. And some leaks are to be expected so you need to keep a closer eye on fluid levels.

If anything, following recommended service intervals for your sedan is more important in a higher mileage vehicle. Skipping oil changes or other services can lead to problems much more quickly than with a newer vehicle.

So, have your Los Altos auto service advisor at Allied Auto Works help you with an assessment of your older car or truck. If you haven't gotten around to a fuel system cleaning, or replacing power steering or brake fluid, a differential service or transmission service – it's time to start taking care of those things. It'll help keep you on the road for many more happy miles and happy dogs hanging out of the window Cayenne's says.  "We love our car rides!"

From Cayenne's point of view in very simple terms, a fuel injector is a valve that squirts fuel into your sedan 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, Cayenne wants you to know this happens thousands of times a minute in every single fuel-injected car driving down Cupertino, Sunnyvale, and Mt. View interstates.  Cayenne's knows as she loves car rides.

Cayenne says fuel injectors for gas engines are known in the Los Altos automotive community 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.

Cayenne has noticed a few auto makers have recently introduced gas direct injection systems on some engines. They are now available at some Los Altos 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 gas mileage for gas-poor Cupertino, Sunnyvale, and Mt. View car owners. CA motorists can expect to see more of it in the future.

High temperatures under your sedan hood and variations in Los Altos 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.  You do not want this says Cayenne.

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 Los Altos car owners keep their fuel injectors clean.  

Cayenne recommends Allied Auto Works service center where they 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 sedan fuel system means that you will spend less on gas, enjoy strong performance and prevent costly Los Altos repair bills down the road and Cayenne says that extra money you will save on gas can go towards a nice bone for your dog.

Cayenne wants you to make an appointment with Allied Auto Works to have your on board diagnostics analyzed.
2073 Grant Road
Los Altos, CA 94024
650.968.7227

Today Cayenne's going to talk about on-board diagnostics and the questions she hears from folks around Los Altos CA who need answers about diagnostic services. They want to know what diagnostics are, what's involved and what the benefits are. They really want to understand the value of diagnostic scans by a trained technician in Los Altos CA.

Cayenne's knows these are valid concerns. If you don't understand something it's really hard to know its value. Let's start with some history.

Cayenne did some research and since 1996, all cars and light trucks in Los Altos CA have been required to use a standardized diagnostic system to help repair technicians determine what's wrong with your vehicle. The diagnostic system works with the vehicle's Engine Control Module – the computer that controls many engine functions.

The computer monitors dozens of components and processes. Depending on what the sensors read, the computer will make adjustments to compensate for conditions and minor problems. When there is a condition that it can't adjust for, the computer will turn on the check engine light.

It is also called the 'service engine soon' light on some vehicles. The warning light signals you to get into your Los Altos CA service center so that the trouble code can be read and the problem can be fixed. Your service center will have a scan tool and powerful software that will help the technician diagnose the problem.

If you've searched for check engine light on the internet, you may have seen that you can buy an inexpensive scanner or go to an auto parts store to have the trouble code read to tell you exactly what's wrong.

That's a common myth. The code itself doesn't tell you what's broken. It starts you looking in the right place. It tells you what engine parameter is out of range – but it won't tell you what's wrong or how to fix it.

Let's say you think your daughter has a fever. You take her temperature and it reads one 102 degrees. You've confirmed a fever, but you don't know what's causing it. Is it a 24 hour flu, an infection, appendicitis or leukemia? A fever is a symptom of all of these medical problems, but it takes a skilled physician's examination and additional diagnostic tests to find out what is actually causing the fever.

An example of a trouble code could be: P0133, which reads 'Bank 1 sensor 1 circuit slow response'. This means that the front oxygen sensor has a slow response time to changes in the air-fuel mix. If that's all you knew about cars, you would think your oxygen sensor was broken and would replace it. Now, it could be the oxygen sensor – but it could also be a bad or contaminated airflow sensor, exhaust leak, electrical problem, an intake manifold leak or any of a number of other things.

Cayenne imagines a lot of oxygen sensors have been replaced because of that code. So the on-board diagnostics point the way to where the trouble lies, but it takes some skill and high-tech equipment to actually pinpoint the problem. The cheap scan tools that a consumer can buy do not have the ability to retrieve some of the operating history that's stored in the engine control computer. That history's very helpful in diagnosing the problem. Service centers like Allied Auto Works invest a lot of money in high-end diagnostic tools to help solve the mystery and get you back on the road as soon as possible without replacing a lot of parts that don't need replacing.

So, on-board diagnostics provide a powerful starting place for a highly-trained, well-equipped technician to get to the bottom of your problem. When your check engine light comes on, get it checked at Allied Auto Works. If the light burns steady – don't panic. Get in to Allied Auto Works soon to have the engine scanned. A flashing check engine light means that there is a severe engine problem. Get in as soon as you can – waiting too long can lead to very expensive damage.

And try to not drive at high speed or tow or haul heavy loads with a flashing check engine light.  Cayenne strongly recommends this needs to be attended to as soon as possible. 

If you've walked through the automotive fluids of an auto parts store in Los Altos, you'll know how overwhelming the sheer number of products available can be. How do you know what's right for your vehicle?

As you know, these fluids all serve a function in making your car run as you drive around the Los Altos area. Your vehicle manufacturer has specified a particular type of fluid for every system from the motor, to the cooling system, brake fluid and so on. When you realize that not every variation is applicable to your vehicle, the task becomes more manageable.

First let's talk about why there are so many varieties. Starting with motor oil, we see that manufacturers match the properties of a particular weight or type of oil with the design needs of the engine. For example, engines with sophisticated valve trains often require a thinner weight of oil.

Some vehicles around Los Altos come from the factory filled with synthetic oil and the recommendation to use it for life. The safe bet is to always use what the factory recommends. The recommendation is what's been proven to work in function and durability tests. The recommended oil is also a factor in determining oil change interval schedules.

A good quality oil has more additives that are engineered to clean and protect the engine. They cost a bit more, but are worth the extra protection. If you buy budget oil, you might want to consider shortening your oil change interval.

Sometimes fluids are developed specifically to meet the needs of a particular family of engines. An example would be coolant. Because of the different materials used to build the cooling system, the coolant has to be formulated to protect those parts, which vary from manufacturer to manufacturer, from corrosion. We've seen special coolant in Los Altos for General Motors, Volkswagen, Chrysler and others.

The same is true of transmission fluid and brake fluid in recent years.

The really good news is that your Los Altos service center has databases that tell them the recommended fluids for your vehicle. This takes all the guess work out. If you have some special needs, like a higher mileage engine or want enhanced performance, ask your service advisor for upgrades or additives that'll meet your needs while being consistent with the manufacturer's recommendations.

Of course, your full-service oil change will top off your fluids. But it's a good idea to have some of everything at home in case you need to top something off yourself or to take on a trip. Ask your Los Altos service advisor at Allied Auto Works or check your owner's manual for fluid specifications.

It's important to know that there are national warranty laws that say that a manufacturer cannot require you to use their brand of fluid to maintain your warranty. That said, there are two things that may affect your warranty.

Using the wrong type of fluid may void the warranty. Going back to radiator coolant, the correct type protects against corrosion and the wrong type will not. So it's important to be right.

Also some warranty protections are conditioned on taking care of scheduled preventive maintenance. Please review your warranty if you have questions.

Have you ever had an experience like this in Los Altos 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 Los Altos 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 Los Altos 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 Allied Auto Works. Give us a call at 650.968.7227 and let us help you resolve your check engine light issue.

Los Altos drivers' cars have to operate in a wide range of CA temperatures which requires our engine coolant to be able to perform 'no matter what'. Think for a moment about the environment where the coolant does its thing. 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 manufacturers recommend different types of anti-freeze for our Los Altos, CA vehicles.

There are several different 'families' of anti-freeze available to us here in Los Altos, CA. Your owners’ manual will tell you what kind you should use. Of course, the automotive professionals at  Allied Auto Works will know the right kind for your car.

It’s critical to stay on top of this because coolant system failure is the most common mechanical problem people have here in Los Altos, CA. Regular service at Allied Auto Works 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 personal Allied Auto Works tech will know what to do. You’ll be advised to replace the coolant at specified intervals.

Some manufacturers recommend periodic coolant system flushes. A flush adds a cleaning step to the fluid replacement process. Again, check to see what your Los Altos tech 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 pricey. Los Altos drivers can literally melt down their engine and have to replace the whole thing. So don't ignore warning signs.

First turn off the air conditioner. This will lower engine temperature right away. Next, crank up 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.

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. Allied Auto Works 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 Los Altos, CA, mean that you’ll need to service your coolant more frequently.

At AutoNetTV, we suggest that you have Allied Auto Works 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 Los Altos, CA.