AUTONET TV

Your Vehicle is Talking to YOU (Service Warning Signs)

Your vehicle may be like that famous battery bunny, the one that just keeps going and going.  But while it may seem sometimes like you never need to take your vehicle in to be worked on, there are some things you should keep your eyes, ears and nose out for. They are warning you about something that needs attention at your vehicle service facility.

• If a warning light is on, don't ignore it; do something about it.  There are warning lights for battery, oil, engine heat, tire pressure… you name it.  And the manufacturer put them there for a reason.  They're telling you something isn't normal. So when one goes on, have it checked out soon, especially the blinking Check Engine light.  The earlier you have any warning light issue diagnosed, the more likely you are to avoid a more serious problem.
• If your vehicle is vibrating or shaking, it's not only annoying, it could signal trouble.  You can bet your vehicle didn't do that when it came out of the factory! If you can feel a vibration in the seat of your pants or shaking in the steering wheel, head on over to your service facility and have them diagnose what is causing it.
• Smoke coming out of anywhere in your vehicle is a signal (smoke signal, get it?) that there may be a troubling issue.  Likewise if you can smell something burning (like oil), the nose knows there's something amiss.  Time to find out what.
• If you aren't getting the distance you used to out of a tank of gas, it may not simply be your lead foot. A lot of vehicles will give you a digital readout of your latest mileage.  If your fuel economy takes a dip, take a trip over to your service facility.  You might have a sticky brake caliper… or it might be something as simple as your tires need more air.
• Yes, you know the dreaded puddle of something under your vehicle can be a bad sign.  It could smell sweet, it could feel oily.  But it means something is leaking.  Go get it checked.  Sooner is better when it comes to locating the source of a leak.
• If your brake pedal travels further than it used to while stopping, that could be compromising your ability to stop safely.  Also, if the brakes are making odd sounds, pulsating, grinding or squealing, they're screaming at you for attention.  Proper braking is a must for your safety and those drivers around you.

An old 80s TV show called "Knight Rider" featured a talking car.  You already have a vehicle that's telling you things all the time.  Give it a listen and it will keep you going safely down the road for many years to come.

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

It's Brake Time (Brake Calipers)

Race car drivers have demonstrated the advantages of disc brakes, so most modern vehicles use them.  Sometimes just the front wheels have disc brakes, but many vehicles now have them all the way around. 

A major component of the disc brake is called a caliper.  It works by squeezing brake pads against the disc or rotor, kind of like a bicycle hand brake.  The brake pads themselves are what contact the rotor, causing friction to build and the wheel to slow down, but it's the calipers that apply the pressure to the pads.

Caliper design has evolved over the years, and there are two common types.  One is called a floating caliper.  It has one or two pistons on one side of the disc. When you push down the brake pedal, the piston or pistons in your caliper put pressure on that one side.  A mechanism connected on the other side of the disc applies pressure as well, squeezing your disc so the vehicle stops.  Floating calipers are less expensive since they have fewer parts.

The other type is called a fixed caliper.  They use pistons on both sides of the disc, sometimes several.  They are often used in more high-performance or heavy-duty vehicles.

Calipers can have rubber seals to keep out dirt, debris and moisture, but when that rubber wears out, sometimes the calipers can get contaminated.  They can stick or start leaking; they can even rust.  Then your caliper can get stuck applying that "squeeze" when you are not pressing on the brake pedal.  Or they can get stuck in the other position, not applying stopping power when you press the pedal.

When this happens, it's not unusual to feel your vehicle pull to one side when you brake.  You might notice a burning smell from the constant friction if the caliper is stuck on, plus you may feel the heat from the wheel after you park and get out of your vehicle.  Sometimes you'll hear a high-pitched sound or clunk if your calipers are binding up. 

That's your cue to have them checked out at your vehicle service center.  If your calipers aren't working correctly, it can be a safety hazard.  Sticking calipers can affect your ability to steer and stop; this is the kind of "brake time" you need so you can get them back on track and working properly.

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

Straight Ahead (Wheel Alignment)

If every road was straight and smooth, we wouldn't have to worry much about wheel alignment. But they're not, so we do.  Hitting potholes or driving on rough pavement can knock your vehicle out of alignment and you'll notice it in one of several ways.

Your steering wheel may not be centered when you're driving straight ahead, or your vehicle may pull to one side.  You may find your tires wearing on one side or they may squeal.  All are signs that could point to you needing an alignment.

Your wheels should be perpendicular to the road and parallel with each other.  If not, your tires will wear out faster and your vehicle won't go straight on a level straightaway.

In alignment, there are several factors that must be checked.  One is camber.  Your wheels should be straight up and down if you look at them from the front. If not, you'll wear your tires unevenly on one side.

Another factor is caster, the angle of the steering pivot.  Most vehicles have what's called positive caster, when the top of the steering pivot leans toward the rear.  Proper caster balances steering effort, stability on the highway and cornering.

You may have heard the term "toe" in reference to your wheels.  If you looked at your front wheels from straight above, for example, imagine your wheels were your feet.  If you were to turn your toes in toward each other, that would be toeing in.  The toe of your vehicle should be set to manufacturer's specifications so your vehicle handles well and doesn't prematurely wear out tires.

It's a good idea to have your alignment checked periodically since it can get knocked out by one hard knock or a lot of little knocks.  It's not just about tire wear, it's about ride comfort and safe handling. You may say a vehicle aligned just feels divine.

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

Mercury Rising (Hot Weather Vehicle Concerns)

The heat is on, and your vehicle takes a beating when it is.  Several of your vehicle's systems are under extra stress in hot weather, so here are a few to make sure are getting the care and maintenance they need.

It makes sense that the cooling system is one to make sure is in top shape.  Vehicle breakdowns in summer are often due to a problem with one of the cooling system's components.  Coolant levels have to be up to specs, the ratio of coolant to water must be correct and the hoses, pumps, belts and radiator must all be working properly in order to prevent vehicle overheating.

Summer is also hard on your air conditioning system.  You might find that no air is blowing out of the vents or maybe only hot air is coming out.  Air conditioning equipment is best diagnosed and repaired by a trained and experienced technician.  The problem could be in any number of components, including the condenser, compressor or blower motor.

You may think the battery gets a break in the summer, but heat will shorten the life of your battery more quickly than cold.  Your service facility can analyze the condition of your battery and tell you whether it's healthy or needs replacing.

Tires take a beating in heat, too.  Pavement can be scorching hot, and the sun's rays break down the rubber.  Watch inflation pressure in hot weather, too, since air expands the hotter it gets.  Your technician can check air pressure, tread depth, cupping and other uneven wear and diagnose the source of any problems. 

And don't forget brakes.  One video online says brakes on a car that were driven hard on a track reached temperatures as high as 500°C/932°F.  Heat can reduce stopping power.  A technician should periodically inspect pads, rotors, drums, lines and other components to find a problem before you lose the ability to stop.

Finally, engine oil is really put to the test when it gets hot.  Your vehicle service facility will make sure you have enough oil and the proper kind to keep your engine's components properly lubricated.  Help your vehicle beat the heat.

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

Greeted by a Screech (Loud Noise when Starting Vehicle)

No one likes to be greeted in the morning by having someone screech at you.  The same goes for a loud, high-pitched noise your vehicle greets you with every time you start the engine.  If you're wondering if that's normal, no, it isn't.  And it is worth getting checked out.  The good news is that it might be nothing serious.  Then again, it may be.

The first things to suspect any time you hear a high-pitched sound coming from the engine are belts.  They have tension on them and they're trying to turn lots of different pulleys, pumps and other equipment the engine needs to work properly.  The noise could come from the belts starting to wear out and dry out. If one of those belts breaks at an inopportune time, not only can it strand you somewhere, the damage to the engine could be very expensive to fix.

Other things that will cause a high-pitched sound are the pulleys and tensioners.  The tensioners keep the right amount of pressure on the belts and some pulleys contain rubber that dampens engine vibrations.  The rubber in the pulleys can crack or deform with age, which prevents them from working correctly and may cause your belts to wear out.

A technician will check to see if the belts are worn or cracked.  He or she will also check the tension on the belts, the condition of the pulleys and whether all  components are aligned the way they should be.

Sometimes, the noise is nothing major to worry about, but it's still worthwhile to rule out any problems that have cropped up now or may appear in the future.  You'll have a properly running vehicle that sounds like its engineers intended… quiet and smooth.

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