AUTONET TV

Not-So-Smooth Operator (Transmission Signs of Trouble)

You are heading down a flat, newly paved street when all of a sudden you feel it.  Your vehicle jumps a little bit when you're accelerating and changing gears.  You know it's not the surface of the road because it's smooth as silk.  So what did you just feel?

That kind of jumping—or grinding or slipping—during gear changes could be a sign of trouble in your automatic transmission.  And it's important to get it checked out fairly soon because some transmission problems that aren't fixed early can lead to more involved and expensive repairs.

By far most vehicles on the road in North America have automatic transmissions, and they are workhorses.  Unlike early cars with balky, hard-to-shift manual transmissions, the latest automatics allow you to drive without having to even think about gear changes.  But you should know about a few signs of trouble to look for if they ever start showing up.

• When you first get going and shift your vehicle from Park into Drive, do you feel a slight pause?
• How about when you shift into Reverse?  Is there a little lag?
• Does your vehicle sometimes shake when you're traveling down the road?
• Do you smell something burning in your engine compartment?
• Do you hear a clunk when your vehicle shifts?
• Do you have spots of a reddish or brown, oily fluid in the driveway under your vehicle?

If you do, these are worth getting checked out at our service center.  When automatic transmissions start to show signs of wear and age, it can be because of a number of reasons.  They can be caused by your transmission fluid getting old and contaminated, or its level may be low.  The gears can be worn.  You may have a leak somewhere in your transmission.  Or transmission problems might be caused by a computer problem.

Transmission issues aren't always expensive to repair.  Sometimes there may be a leak in a hose or gasket.  Or a computer needs to be reset.  Other issues may be much more involved.  This is why it's important to get your vehicle checked out when you do notice something doesn't feel, look, shift or smell quite right.  Everyone wants their automatic transmission to be a smooth operator.

Arizona Auto and Radiator Repair
1255 E FRY BLVD
Sierra Vista, AZ 85635
520-459-2216
http://www.azautorepair.net

Rubber Match (Tire Replacement)

A set of new tires isn't probably high on anyone's list of exciting purchases.  But since your life is literally riding on them, it's probably a good idea to know when it's time for you to buy new ones.

If you've been feeling your vehicle slipping more in wet weather or it takes a longer distance to stop, those are a couple of signs you may need new rubber all around. Here's how to make your decision.

First thing to do is look at your tires.  The surface of the tire that contacts the road is the tread. When that tire was new, the tread was deep (the grooves in the rubber that provide traction). If they're starting to look somewhat smooth, you have a seriously worn tire that definitely needs replacing.  Bring your vehicle in for us to look at your tires and we can check your tread with a tread gauge.

Also look at the sides of your tires.  If they have cuts or cracks in them, or if you see signs of bulges or scrapes made by hitting curbs or potholes, those could be signs of serious damage. 

Keep an eye on your tire pressure monitors.  If you notice one or more of your tires showing frequent pressure changes, that needs to be checked out. 

One other thing you probably didn't know is that your tires all have birthdays, and they're printed on each sidewall.  When you bring your vehicle in for us to inspect your tires, we can tell you how old they are. That's important because rubber deteriorates with age, even if they don’t have that many miles on them.  Tire manufacturers recommend replacing tires when they reach a certain age, usually from six to ten years old. 

Now the question is, which tires should you buy? That's one for your service adviser who can recommend replacements based on your driving style, the model of vehicle you own, where you drive most often, and other factors. 

Oh, and if you want your new set of tires to last as long as possible, remember to have them rotated regularly, keep the right pressure, and don't drive aggressively. 

Arizona Auto and Radiator Repair
1255 E FRY BLVD
Sierra Vista, AZ 85635
520-459-2216
http://www.azautorepair.net

Staying In Charge (Alternator Repair)

Seems like these days, we're hearing about more and more electric or hybrid vehicles.  Keep in mind that conventional gasoline internal combustion vehicles have important electrical components, too, and it's important to make sure they're operating at their peak.

In a vehicle with a gasoline engine, the part that keeps the battery charged is the alternator.  It converts the mechanical energy created by the engine into electrical power.  To do that, a shaft in the alternator has a pulley on one end that's driven by a belt that is turned by the engine.  A series of magnets then spins around coiled wires and it creates alternating current, or electricity. Your vehicle uses that to charge the battery that, in turn, keeps other electrical components in your vehicle working.

Here are a few signs that the alternator isn't doing its job right.  The battery keeps going dead, your instrument panel's battery light is on (it looks like a rectangle with a - and + inside and a couple of "terminals" on top), or your lights are dimmer than they usually are. You may also have a voltage gauge that shows  lower than usual power. If bearings in your alternator are seizing up, you may hear a grinding noise coming from your engine compartment. If you have any of those signs, bring your vehicle to us so we can check your electrical system.

A technician will run diagnostics on your alternator, the cables and the battery. Because the alternator is driven by a belt, the technician will check what shape all the drive belts are in.  Plus, we'll see how much electricity the alternator is putting out. 

If your alternator has failed, it can be replaced with a new or a remanufactured one. Speak with your service advisor about which will best suit your needs. Oh, and keep in mind that sometimes other parts may have to be replaced at the same time. For example, if your alternator's bearings froze up, that may have damaged the drive belt, and it may have to be replaced at the same time. 

Arizona Auto and Radiator Repair
1255 E FRY BLVD
Sierra Vista, AZ 85635
520-459-2216
http://www.azautorepair.net

Shifty Letters PRNDL (Transmission)

You probably figured out those shifty letters.  They're what you see on your automatic transmission shifter and stand for Park, Reverse, Neutral, Drive and Low.  Your automatic transmission is one of the great automotive inventions; here are some ways you can keep yours working well.

Maintain your transmission regularly.  A technician will check your transmission fluid's level and even its appearance and smell.  If it's dark or has an unusual odor, that could be a sign of trouble.

Change from one transmission direction gear into another only when your vehicle is stopped.  So many drivers want to switch from Reverse to Drive quickly or the other way around.  If you do that when the vehicle is moving, you can damage your automatic transmission.

Keep your vehicle's cooling system in top shape.  What does the cooling system have to do with the transmission? It helps keep the transmission fluid from overheating. 

Follow the manufacturer's recommendations for maintaining your transmission.  Some recommend at least an annual checkup by a trained technician. 

Let your powertrain warm up a little before overtaxing it. Especially in cold weather, don't step on the throttle too aggressively before all components are warmed up.  That way both your engine and transmission will last longer.

Transmissions can be costly to fix.  If you treat your powertrain with respect and regularly maintain it, you'll not only avoid expensive repairs, but you’re also much less likely to find yourself stranded because of a transmission problem. 

Arizona Auto and Radiator Repair
1255 E FRY BLVD
Sierra Vista, AZ 85635
520-459-2216
http://www.azautorepair.net

Prepare Your Windshield for Winter (Wiper Blades and Fluid for Freezing Temperatures)

Winter and freezing temperatures present challenges for different parts of your vehicles.  For example, winter tires give you better traction on snow.  But some parts of your vehicle that may need special attention for winter are your windshield wipers. You may have found yourself in the middle of a snowstorm when your windshield wipers are doing nothing but streaking slush that ices up on contact on the glass.  Now you're more blind than you were before!

Obviously being able to see during a snowy or icy winter event is important for the safe operation of any vehicle.  So keeping your windshield and rear window clean can go a long way to guarantee you can see your surroundings.

Let's start with the wipers.  Blades that are good for hot weather may not be robust enough for freezing weather. You can buy special winter wiper blades that stay flexible during sub-zero temperatures.  The stiffer frames that hold them have a rubber covering that prevents ice and snow from building up.  Another style is beam wipers that have a one-piece design, intended for use all year long.  Since these have no separate frame, ice can't build up like on traditional frame wipers.  

If you've ever had salty road brine kicked up on your windshield, you know it can blind you in a second.  So you absolutely must have windshield washer fluid available to clear your vision.  The fluid you use during the warm weather months will often freeze below 32°F/0°C, and that can actually make things worse by icing up your windshield when you spray it.  Worst of all, it may freeze in your washer reservoir.

Be sure to use washer fluid that is meant for sub-freezing temperatures; special formulas will remain a liquid in weather as cold as -30°F/-34.4°C.  Some contain alcohol to keep them flowing; some have a little antifreeze that will melt snow and ice.  If you do use these liquids, make sure to keep them away from small children and pets because they're poisonous if they drink them. 

Each climate is different, and there are windshield products to meet your needs.  Your service advisor can recommend which ones will work best for you.  The idea is in winter, you need to be able to see. 

Arizona Auto and Radiator Repair
1255 E FRY BLVD
Sierra Vista, AZ 85635
520-459-2216
http://www.azautorepair.net

Go With the Flow (MAF Sensor Replacement)

A driver brought her vehicle into the shop the other day and told us how she was getting lousy fuel economy and that the engine was running rough.  Plus, the Check Engine light was on.  Our technician checked the code the engine had generated (why the Check Engine light was on) and found the problem.  It was a faulty Mass Air Flow sensor, MAF sensor for short.

This MAF sensor is an important part of your vehicle.  What it does is calculate the amount of air going into your engine.  As you may know, air is taken into your engine where it's mixed with fuel.  Then, the spark plugs fire, that explosive fuel/air mixture detonates, and all these sequential explosions together provide the power to get your vehicle moving down the road. 

It makes sense that if the MAF sensor isn't sending the engine's computers the correct information on the amount of air going in the engine, the fuel/air mixture isn't going to be right. It will either too rich (too much gasoline for the amount of air) or too lean (not enough gasoline for the amount of air).

In this driver's case, the MAF sensor was damaged and needed to be replaced.  Another thing that may cause the MAF to give an incorrect reading is if its wires are dirty or faulty.  So, replacing or cleaning the wires important as well.

Other symptoms that your MAF sensor is bad? If your engine hesitates when you step on the gas, it stalls, or your vehicle is jerky when you accelerate. 

A malfunctioning MAF sensor is not just bad for performance.  Driving with your vehicle in that condition can cause more damage to your engine.  When you bring your vehicle in for us to check, a technician will thoroughly examine your engine to make sure all issues are taken care of.

Arizona Auto and Radiator Repair
1255 E FRY BLVD
Sierra Vista, AZ 85635
520-459-2216
http://www.azautorepair.net

Snake in the Engine (Serpentine Belt)

There's a belt that snakes through your engine.  It's even named for a snake, the serpentine belt.  It'll bite you when it breaks, possibly leaving you stranded.  So, it's good to know a little about this snake-like belt.

In early engines, there were lots of belts. They were used to convert the rotating power of the engine to turn a mechanical part.  But engineers had an idea.  Why not consolidate all those belts into one that ran a bunch of different parts simultaneously? Voila!  The serpentine belt.

It's found in the front or side of your engine unlike older belts which were often in a V shape, the serpentine belt has ribs on it which more effectively connect with the pulleys that power the other components.  A serpentine belt may power the water pump, power steering pump, alternator, and the air conditioning: all from one crankshaft. 

Now, all that's fine when everything is working well and the belt is intact.  But when a serpentine belt wears, gets loose, or breaks, it can affect many engine components at once.  Not an ideal situation. 

If you hear squeals coming from the engine compartment, see a battery light, or the engine overheats, those could be signs that your serpentine belt needs replacing.

The good news is that they usually last a long time, from 60,000-100,000 miles or 100,000-160,000 km.  Still, they don't last forever, and your vehicle's manufacturer usually recommends replacing them when they've gone close to the expected maximum.  It’s also recommended that you replace the pulleys and belt tensioner at the same time as they have the same service life. Regular maintenance and inspection of the serpentine belt is not only a good idea; it’s one of those things that you should not let "slip" by.

Arizona Auto and Radiator Repair
1255 E FRY BLVD
Sierra Vista, AZ 85635
520-459-2216
http://www.azautorepair.net

Oil's Well That Ends Well (Oil Change Grades and Weight)

Changing your oil regularly is one of the most important things you can do to keep your vehicle running well.  And knowing the right type of oil to use is also very important. 

Engine oil is classified by weight, but it doesn't refer to how much the oil would weigh if you put it on a scale.  It refers to viscosity, or how easily the oil flows through the engine.  Most engines operate normally at around 210°F/99°C.  The viscosity, or weight, is assigned a number by how well it flows at that temperature.  The lower the number, the more freely it flows. 

Most vehicle engines use what's called a multigrade oil which behaves differently in different temperatures. Multigrade oils have a "W" in their viscosity number that you may have seen on a bottle of oil, something like 5W30.  The W stands for winter and shows how freely it flows in colder temperatures.

That means a 5W30 oil will behave like a 5 weight oil in lower temperatures (less viscous or thinner) and a 30 weight oil in warmer temperatures (more viscous or thicker).  That's important on a cold day because the oil needs to behave like a thinner oil when you start your engine since it need to lubricate engine components immediately to protect the metal components. Then as the engine warms up, it behaves like a thicker oil to prevent friction among those parts.  Pretty neat trick, right?

The type of oil you use can differ depending on what type of climate you operate your vehicle in and how your vehicle is used (carrying big loads, towing, etc.). Your owner's manual contains several different recommendations based on these factors.  Your service advisor can recommend the right oil for your needs.  Like Shakespeare said, "Oil's well that ends well."

Arizona Auto and Radiator Repair
1255 E FRY BLVD
Sierra Vista, AZ 85635
520-459-2216
http://www.azautorepair.net

Steering You Right (Tie Rod End Replacement)

For drivers, S stands for safety.  And there are three other words that start with S that are all equally important: starting, stopping and steering. For your vehicle to be at its safest, all three functions must be in top shape. 

Steering is one of those things we take for granted.  After all, you turn the wheel and your vehicle changes direction. But sometimes you might notice your steering is a little off.  Maybe you've noticed you turn your wheel slightly and your vehicle doesn't turn. You may feel a little vibration in the wheel that increases when you go faster.  You may hear a little squeak from the wheels when you steer and you may notice your tires aren't wearing evenly.

These are signs that your tie rod ends may be failing. Tie rod ends help connect your vehicle's steering mechanism to the wheels.  They can wear out after you've hit one too many potholes or just from constant use.  They can cause sloppy steering and loose handling, and they should be replaced when they've reached the end of their life span.

If you notice any of these things happening on your vehicle, bring it in to us so a technician can check it out.  There are a couple of different types of steering, recirculating ball steering and the one most of the latest vehicles have, rack and pinion. When we replace your tie rod ends, we will remove and replace the old ones and adjust them to meet your vehicle manufacturer's specifications.

Tie rod ends should often be replaced in pairs, and your vehicle should be aligned afterwards.  Keep your steering working the way it's supposed to, and your vehicle will be sure to steer you right.

Arizona Auto and Radiator Repair
1255 E FRY BLVD
Sierra Vista, AZ 85635
520-459-2216
http://www.azautorepair.net

Round and Round (Wheel Balancing)

In a perfect world, all wheels and tires would be perfectly round and weigh exactly the same at every point of the wheel.  Unfortunately, they're not, and if they're out of balance, they can reduce the lifespan of your tires, make your vehicle shake like a carnival ride, and maybe even damage a few suspension parts along the way.  You don't want that!

Wheel balancing, sometimes known as tire balancing, is a process by which a technician makes sure your tire/wheel assembly has evenly distributed weight.  If it isn't, it can give your ride bad vibrations.  If you feel your vehicle's steering wheel shaking, it can mean unbalanced wheels in the front. If you can feel a vibration in your seats, it could be unbalanced rear wheels.

In addition to your vehicle vibrating at higher speeds, there are other signs that your wheels are out of balance. You may see uneven tread wear, or you may notice you aren't getting the kind of fuel economy you used to. 

When you experience these problems, bring your vehicle in, and we can put your wheels on a machine designed to detect any imbalance.  The technician will start your wheels spinning, and a computer will determine how much weight is needed where.  Then, the technician can add small weights on the inside or outside of your wheel rim to precisely balance out the uneven weight.  When the wheel is balanced correctly, it will spin evenly and smoothly.

Sometimes your vehicle will hit a pothole or object in the road that dislodges one of those weights, which can throw that wheel out of balance again.  If so, you'll have to bring it in to have that corrected

Some drivers confuse wheel balancing with wheel alignment. Alignment is making sure the wheels are perpendicular to the road and parallel with each other.  Sometimes your vehicle will need both balancing and alignment done at the same time.

No vibrations are good vibrations when it comes to your wheels.  Bring your vehicle to us, and we'll perform a balancing act to keep your vehicle riding smoothly down the road.

Arizona Auto and Radiator Repair
1255 E FRY BLVD
Sierra Vista, AZ 85635
520-459-2216
http://www.azautorepair.net