AUTONET TV

Your Vehicle's Hissy Fit (AC System)

When you hear hissing sounds coming from your vehicle, you might start thinking the worst.   One type of hissing coming from around your air conditioner may be a normal sound, or it could be a sign of serious trouble.

First - the normal sound.  When you turn off your vehicle, the refrigerant goes from its high-pressure side to the low-pressure side. Some of those noises are normal.  But when it hisses all the time, that's another story.

One cause could be that the refrigerant is leaking.  Air conditioners are fairly complex systems that involve various pumps, hoses, valves and motors.  When your air conditioner is cooling, the refrigerant changes from a gas to a liquid and back.  That refrigerant is under pressure, and there are many places it can leak from. 

A hissing sound can also be a failed valve in your air conditioner's compressor.  It is what controls the refrigerant's pressurization.  It's important to have this fixed fairly quickly after it develops a problem because when it isn't, that can lead to more extensive—and expensive—repairs.

If you hear screeching coming from your air conditioner at the same time you hear hissing, your compressor may be on its last legs. It could also be a defective clutch. 

Any time you hear a noise you haven't routinely heard before, bring your vehicle to us so a technician can check the various components and properly repair the problems.  Air conditioning systems are complex and are best handled by a professional with the right tools and equipment.  When your AC has a hissy fit, let us cool it off and you at the same time.  

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

Oh, Stop! (Disc Brake Service)

Every time you drive your vehicle, you wear down your brakes just a little bit.  And after a while, that adds up.  Gradually, your stopping power isn't like it used to be.  Since brakes are one of your vehicle's most important safety features, it just makes sense to keep them performing well.

Most vehicles have disc brakes.  One key component, as the name suggests, is the disc.  Most vehicles have discs on their front and rear wheels.  The discs (also called rotors) are made of metal, and each rotates with the wheel hub.  Your brakes also have pads that make contact with the rotors when you press down on the brake pedal, and the friction stops your vehicle.

After many, many stops, that friction wears down both the pads and the discs and reduces their ability to stop the way you need them to.  The discs may also become uneven from all the heat they generate, and your brakes won't stop as well as they used to when they were newer. 

Some signs that your rotors need attention include vibration at the wheels when you stop, discolored rotors (the metal looks blue), excessively hot rotors, or grooves in the metal.  If you see any of these signs, it's time to bring in your vehicle for us to inspect your brakes. 

A technician will measure the thickness and trueness of the rotors and check the surfaces for wear.  If they need to be replaced, they'll be done in pairs, so if a front rotor is bad, the other front rotor will also be replaced. Usually, your brake pads will be replaced at the same time.  You can ask your service advisor if higher-performance brakes would benefit you.

When your vehicle is at the shop, the technician will check other components of your brake system to make sure they are operating safely. Brakes are vital to the safe operation of your vehicle.  Keep them well maintained so they can be there when you need them.

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

Refresh Your Brakes (Brake Fluid Exchange)

Brakes are one of your vehicle's most important safety components, and you may have noticed that they don't stop as surely as they used to.  Maybe it takes you applying a little more pressure to them than before, or perhaps you get the feeling that they're not stopping you as quickly.

Those could be signs that your brake fluid needs changing.  Hydraulic brake systems use a fluid that enables the brakes to apply their stopping power to the wheels.  That fluid can wear out, degrade, become contaminated or pick up air and moisture.  All those can eventually contribute to brakes that feel sluggish. Driving with old, worn-out brake fluid may also shorten the lifespan of other braking components.

Our technicians can evaluate your brake fluid to see if it needs changing. Your vehicle's manufacturer recommends how often that should be done, and when it needs changing may depend on how and where you drive. Our technicians can check the condition of your brake fluid when you have your regular oil changes. 

A technician will remove the old fluid and replace it with the type the vehicle manufacturer recommends. They will also bleed the air from the brake system, check it for any leaks and inspect other components such as the hoses, rotors and brake pads. Because brake fluid is combustible and toxic, it's important that it be disposed of properly so as not to create environmental damage. 

And just a reminder that if you continue to drive with old, contaminated brake fluid that's past its lifespan, other components of your brake system can fail.  Let's face it. Brakes that don't stop you when you need them can endanger your life—and the lives of those near your vehicle.   

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

Put the Brakes On! (Brake Caliper Replacement)

Keeping your vehicle's brakes in top shape is one of the most important things you can do for your safety and those on the road with you. Most drivers know a little about brake pads and rotors but maybe not so much about another brake component called the calipers.

Disc brakes work by a mechanical system that presses your brake pads against discs called rotors (you can usually see these discs through your wheels). The friction stops your vehicle smoothly when everything is working the way it should.  The calipers use the hydraulic pressure of the brake fluid to apply the stopping power. 

After they've been on your vehicle for a while, the calipers can get stuck or wear out.  If calipers on one side of the vehicle work correctly and not on the other, you might feel a pull in one direction.  You might feel the same kind of pull if the caliper is stuck and is applying constant pressure.  You might hear scraping or squealing coming from a stuck caliper and you might smell burning on that side.  The friction from a caliper that's always applying pressure may cause that wheel to heat up, so after you've pulled your vehicle off the road safely, the wheel with the stuck caliper will might feel hotter than the others

Because there are many different components to the brakes, it's best to leave the diagnosis and repair to a trained technician. They will run each wheel through a series of tests and inspections that can pinpoint the problem.  Sometimes it involves more components than just the caliper that may need changing at the same time.

The best way to make sure your brakes will perform well is to is to have our service center perform regular inspections and follow the vehicle manufacturer's recommended service.  That way your brakes will be ready, willing and able when you call on them to put a stop to things.

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

Straight to the Point (Alignment Signs of Problems)

It’s just common sense that your vehicle will drive better if all the wheels are lined up with each other and the road the way the engineers intended.  When they’re not, that is called being out of alignment.   Here are some signs that your alignment has problems.

• Your steering wheel isn’t straight when your vehicle goes straight down a straight road. This one’s pretty easy to notice.  If your vehicle’s logo on the wheel is tilted, that’s probably not the way designers wanted it to be. Bring it in and have us check it out.
• Your steering wheel is vibrating on a smooth road or when you are accelerating.  While this could be caused by several different things, one possibility is misalignment.  If your steering wheel is shaking, it should be examined by a trained technician.
• Your vehicle is pulling to one side without you wanting it to.  Sometimes the configuration of the road will cause it to pull slightly left or right.  But if you find yourself constantly correcting course to keep your vehicle headed straight down the road, that’s worth having us look at your alignment.
• You’re going through tires like there’s no tomorrow. The tread on your tires should be wearing nice and evenly from the outside to the inside of the tire.  If the wear isn’t even, it could be your vehicle needs an alignment.

We have equipment designed to quickly and accurately measure your vehicle’s alignment.  We can make precise adjustments to make sure you are headed straight where you want to go.  Have your alignment checked regularly. It can help prevent more serious problems in the future and make your vehicle drive as beautifully as you remember it used to.

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