AUTONET TV

When Metal Meets Metal (Wheel Bearings)

What part of your vehicle has little metal balls inside that are lubricated and allow you to cruise on down the road?  They are wheel bearings, and automotive designers might argue they are human beings' second greatest invention of all time (the first is, of course, the wheel!).

You have a wheel bearing at each wheel.  They allow your wheels to turn freely, minimizing friction that would ordinarily slow you down when metal meets metal.  When one of your wheel bearings starts to go bad, it lets you know. A wheel bearing does its work quietly when it's in good health but starts getting noisy when it isn't.  People describe the noise differently.  Sometimes it sounds like road noise, a pulsating, rhythmic, sound.  That pulse speeds up when your vehicle speeds up. 

Here's what's happening when you hear that sound.  As mentioned, the bearing has these little metal balls inside a ring.  They have a lubricant inside to reduce friction between the balls; modern wheel bearings are sealed and they're intended to do their job without any maintenance. 

Wheel bearings take a beating; you hit some rough potholes or go over some uneven railroad tracks. Sometimes water can get into a bearing and reduce the ability of the lubricant to do its job.  Time starts to take its toll, too. When the lubricant isn't reducing friction like it should, the bearing can heat up. One of those little balls can start shedding pieces of metal and soon those shards start grinding up the other balls.  Friction takes over and soon your wheel isn't turning smoothly. That's what's causing the sound.  If a wheel bearing is not fixed, it could eventually seize up completely, and you can be stranded.

It's a lot easier if you heed the early warning signals, that pulsating noise.  Now, sometimes a similar noise can be caused by a bad tire, but in either case, it's important to have it checked out. Our Triple A Automotive technicians will be able to tell you fairly quickly what the problem is and offer a solution.

Wheel bearings generally don't fail often and usually last from 85,000-100,000 miles/140,000km to 160,000km. But consider them a long-term maintenance item that, once fixed, will keep you heading smoothly to the next destination.

Triple A Automotive
972 Barstow Suite B
Clovis, CA 93612
(559) 299-9300
http://www.tripleaautomotive.com

Timing Belt Replacement in Clovis

Today we want to talk to Clovis drivers about timing belts. They're something that many drivers don't know much about and yet your vehicle won't run if it's broken – and it could cause many thousands of dollars damage if it does break. A broken timing belt is usually a tale of woe. Even though timing belt replacement is scheduled in the owner's manual, it's not the kind of thing that most Clovis area auto owners remember because it's not well understood.

Let's review what a timing belt does. As most know, the engine's power is generated in the cylinders. A piston rides up and down in the cylinder. During the first down stroke, an intake valve at the top of the cylinder opens and air and fuel is drawn into the cylinder. Then the piston returns to the top, compressing the fuel and air mix. At the top, the spark plug fires, igniting the fuel, pushing the piston down in the power stroke. As the piston once again returns up in the final stroke of the cycle, an exhaust valve opens at the top of the cylinder and the exhaust is pushed out. The timing belt is what coordinates the opening and closing of the intake and exhaust valves. It's called a timing belt because the valves have to open and close at just the right time.

Now, not all vehicles have timing belts. Some have timing chains. Like the name implies, they use a chain rather than a belt to perform the function. It used to be that most engines used timing chains, which are extremely durable. The leading vehicle manufactures started using belts rather than chains to save money in the manufacturing process. So now Clovis drivers and their advisors at Triple A Automotive are left with a component that can break. They sort of shifted the problem to us. There are two broad categories of engine design: interference and non-interference. If the timing belt on a non-interference engine breaks, the engine simply stops running. That could be very dangerous for drivers depending on where they are at the time, but it causes no internal engine damage.

Interference vehicle engines, on the other hand, will get real messed up when the timing belt breaks, because the valves will actually fall down into the path of the pistons. Things get chewed up when that happens and it'll cost a chunk of change to repair the vehicle engine.

So, what are the warning signs? Unfortunately, there really aren't any. There aren't tell-tale sounds. In some vehicles, a technician from Triple A Automotive may be able to see part of the belt for a visual inspection, but many have a cover that's in the way. The reality is that if the belt slips even one notch, it might as well be broken for all the damage it'll cause. There's no middle ground.

So how can we avoid these problems? Simply replace the timing belt when your owner's manual calls for it. It can be 60,000 miles/97,000 km; it might be 90,000 or 100,000 miles/145,000 or 160,000 km. The point is, if you have 60,000 or more miles (97,000 or more km), ask your Triple A Automotive service advisor right away if your vehicle requires a timing belt replacement.

Contact Triple A Automotive to learn more about your car's timing belt
You can find us at:

972 Barstow Suite B
Clovis, CA 93612
(559) 299-9300
http://www.tripleaautomotive.com

Sometimes Clovis drivers can go quite a while without a failure, but we've seen them happen within a couple of oil changes of being due. It's not worth the risk.

What does it cost to replace a timing belt in Clovis? Well, that really depends on what kind of car you have. I can tell you that it's usually not very easy to get to the timing belt – you often have to remove some accessories to get at it. It isn't a cheap procedure, but it's a fraction of what it could cost to repair the damage caused by a failure.

At Triple A Automotive in Clovis, we're all about trying to prevent repairs, keeping you and your passengers safe and increasing your driving enjoyment. 

Clean Air for Your Engine: Engine Air Filters In Clovis

Every Clovis car owner who has taken their car in for an oil change has been told that their engine air filter's dirty.

Here's what goes into the determination of when to change the filter: First, your vehicle owner's manual will have a recommendation of when the filter should be replaced.

So between your owner's manual and your Clovis technician's inspection there's really no guesswork involved for Clovis drivers.

Now, most air filters purchased in Clovis don't cost a lot to replace. It's just that CA people hate getting caught with an unexpected expense. On the plus side, though, changing a dirty air filter at Triple A Automotive can often save enough on gas to pay for itself before your next oil change in Clovis.

Think about a dirty furnace filter in your Clovis home. When it's all clogged up, enough clean air can't get through. In your vehicle, that means that your engine can't get as much air as it needs to burn the fuel efficiently. So it makes do with less air and has to use more gas to move your vehicle around Clovis roads.

Your vehicle actually needs about 12,000 times more air than fuel to run. Engine air filters don't cost much in Clovis at Triple A Automotive. When it's time to change yours, just get it done. You'll get better fuel economy, have better performance and protect your vehicle engine.

Triple A Automotive
972 Barstow Suite B
Clovis, CA 93612
(559) 299-9300
http://www.tripleaautomotive.com

Do you have a Clue (Get the Most Out of a Service Visit)

When you head to the doctor, you probably have it in your mind what you're going to say about why you don't feel good.  That way your doctor can use that information to diagnose your problem. You might want to think of that same approach when you take your vehicle in for a repair.

Experts say what will help the service advisor most is for you to bring in some well-organized descriptions about your vehicle's issues.  You might even want to write them down so you don't forget.  Is there an unusual smell?  What does it smell like?  Does the problem happen first thing after starting out? If there's an odd sound you hear, is it dependent on speed?  Does it change when you turn a corner?  

Keep your expectations realistic.  Some conditions may take a long time to diagnose and repair.  If you go thinking you'll be in and out in no time, you might be disappointed when you're told there are other customers ahead of you and you may have to come back tomorrow.  If you can make alternate plans to have someone pick you up and take you back when the vehicle is finished, that way you won't feel like you've wasted your time. 

Most importantly, be available for any communication from the service advisor.  If they have your cell phone and they have a question or need an approval for a repair, the sooner they reach you, the sooner things can move forward. 

The service facility wants your experience with them to be good just as you do.  With a little help from you, they'll get your vehicle back on the road and you'll have a smile on your face.

Triple A Automotive
972 Barstow Suite B
Clovis, CA 93612
(559) 299-9300
http://www.tripleaautomotive.com

H20 No! (Driving Through Standing Water)

In a year marked by unusually heavy flooding in North America, drivers are very aware of the possibility they may find themselves driving where water has come over the road.  It can be a daunting and frightening situation.  Flooding waters can move quickly and unpredictably, so you have to keep your wits about you when you encounter that situation.

Here a sample of one vehicle manufacturer's guidelines on what to do.  First, the vehicle is designed to go through some water, but you must be careful.  Never attempt to drive through water deeper than the bottom of your tires.

You can get out of your vehicle to check the depth of the water, but you can never be sure that you aren't going to drive into a spot where the road has washed away.  You can't see below the surface of the water, and suddenly you could find yourself in a place where the road drops off unexpectedly.  In swift moving storm runoff, your vehicle could literally be floating away with the current, putting your life and those of your passengers in mortal danger. 

Never go more than 5mph/8 km/hr when you drive through standing water.  That minimizes the waves you create.  If you DO find yourself in water that is touching your drivetrain components, that water can damage them.  And if you get water in your engine, it can lock up in seconds and stall.  The potential damage can be catastrophic.

You may have found yourself driving in water deep enough to reach your drivetrain components, and it's essential that you have a technician check the fluids to make sure they haven't been contaminated.  That includes engine oil, transmission and axle.  Driving with fluids contaminated with water can severely damage those components. 

The bottom line is to avoid driving through water at all if you possibly can.  Check your vehicle's owner's manual to see if there are specific guidelines for driving YOUR vehicle in standing water.  It's information that could save your life.

Triple A Automotive
972 Barstow Suite B
Clovis, CA 93612
(559) 299-9300
http://www.tripleaautomotive.com