AUTONET TV

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.

Auto Authority LLC
804 Witzel Ave
Oshkosh, Wisconsin 54902
920-231-1016
http://www.autoauthorityoshkosh.com

Got it Covered! (Timing Cover Maintenance)

You may have heard at one time or another about something called a timing belt or timing chain in your engine.  And you may know that if they fail… well, let's just say that there can be some major engine damage.  So obviously, we want our timing belts and chains to be in tip-top shape.

One part that helps keep them running the way they should is the timing cover.  As you can probably guess, it's something that covers the belt or chain.  The timing cover protects both belts and chains from dirt and road debris.  Timing belts also need to be lubricated so their covers allow them to be lubricated as well.  They have a gasket that insures a good seal for the engine.  If that gasket breaks or develops a leak, then engine oil can escape, and loss of lubrication is never good for an engine component.

Other symptoms of a failed timing cover are leaking coolant, a metallic sound coming from the front of your engine or your Check Engine light coming on.  You might also notice a drop in power when you're going uphill.

It's important that your timing cover be in good condition and functioning properly.  Your repair facility will check out that part of your engine to make sure gaskets are in good shape and the cover is doing the job it's meant to do.  Catch that leaking or broken timing cover in time and your engine will thank you for avoiding some serious damage and an expensive repair.

Auto Authority LLC
804 Witzel Ave
Oshkosh, Wisconsin 54902
920-231-1016
http://www.autoauthorityoshkosh.com

Have a Ball! Know your Ball Joints (Ball Joints)

We all have joints in our own skeletal system, but did you know your vehicle has some joints of its own? One of the most important is called a ball joint.

One of the interesting things is that it's somewhat similar to the ball and socket joints we have in our hips and shoulders.  A ball joint allows two parts it joins together to move in more than one direction at the same time.

Think about your wheels.  They have to move up and down when there are bumps in the road but in sideways directions when you are making a turn. As you can see, the ball joints are important for your steering and handling to work correctly.

Since ball joints do so much, they can wear out and become loose.  When the ball wears down or the socket gets worn, there can be too much play in them.  It can get so bad that the ball can come out of the socket and your wheel can fall off, a dangerous situation.  Ball joints can also seize up.  Some of them are sealed and never require maintenance; others require periodic lubrication.

Here are some signs that your ball joints are going bad:

• Your vehicle pulls to one side
• You can hear a clunking noise coming from a wheel area
• Your tires are wearing unevenly, especially on the inside

The earlier a failing ball joint is discovered, the better. The best way is to have regular inspections by a technician.  Your service facility will periodically check ball joints at intervals recommended by the manufacturer. The cost to replace them can vary widely depending on whether you have a vehicle with a 2-ball or 4-ball configuration.  Also, sometimes just the joints can be replaced, but other times they are part of a larger control arm assembly that has to have all the parts replaced at the same time. 

Your vehicle's proper steering, handling and tire wear all contribute to a better, safer driving experience.  Make sure your ball joints are up to the job.

Auto Authority LLC
804 Witzel Ave
Oshkosh, Wisconsin 54902
920-231-1016
http://www.autoauthorityoshkosh.com

When Your Air Bag Light Comes On (Illuminated Air Bag Light)

There are some dashboard lights you should pay more attention to than others.  One is the air bag light.  If it's on and your vehicle is in an accident, your air bags probably won't do their job.

Automakers began installing air bags in the late 1990's since they were mandatory in the United States, and manufacturers have included them in Canadian vehicles as well.  Safety experts say using a seat belt in combination with an air bag gives passengers the best chance of surviving a crash and minimizing serious injury.

The air bag warning light takes a few different forms.  Some look like a picture of a belted passenger with an inflated air bag from a side view.  Or there may be a warning light that says something like "Air Bag," "SRS" (for supplemental restraint system), "Airbag Deactivated" or "Air Bag Off."

Different things cause the air bag light to come on.  Your vehicle may have been in an accident during which, while the air bags didn't inflate, crash sensors were activated.  Some of them may be connected with your vehicle's seat belts.  A technician can reset the air bag if this has happened.

Fuses can also blow which will cause the air bag light to come on.  Another possible cause? A sensor that tells the vehicle's computer whether or not there is someone riding in the passenger front seat may be malfunctioning. 

Air bags are not for the do-it-yourselfer.  They are sophisticated systems that require specialized training and equipment to diagnose and repair.  If an air bag light is on, take it to a qualified service repair facility.  One more thing: remember that safety experts have designed air bags to work in conjunction with seat belts for maximum protection in accidents.  So always wear your seat belt.  

Auto Authority LLC
804 Witzel Ave
Oshkosh, Wisconsin 54902
920-231-1016
http://www.autoauthorityoshkosh.com