AUTONET TV

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.

Gilmore's Auto Service
2151 N Broadway
Walnut Creek, CA 94596
(925) 939-9430
http://www.gilmoresauto.net

Not So Cool (Air Conditioning Systems)

There's nothing quite like getting in your vehicle on a hot day, switching on the air conditioning and having warm air blow out of the vents.  You may have had no problem for months and then, one day, you are driving around in a sauna. You're hot stuff, but not in a good way!

So what goes wrong when the AC isn't working? It could be a lot of things because the system has many different components.  One thing that's a common cause is the vehicle is low on refrigerant (it used to be called Freon).  If that's the case, it's not as simple as simply adding more.  Sure, it may fix it quickly for a short time, but it's more likely than not that the refrigerant will just leak out again.

The original Freon used in air conditioners was destroying the Earth's ozone layer, so that's not used much any more.  But the one that's currently used also contributes to global warming, so it's important that as little of that escapes as possible.  So a technician will determine if there's a leak in your system, where it is and fix that before adding new refrigerant. 

Your vehicle also has an evaporator or two, and those can fail.  Leaks are often the problem with them as well.  The big component that can go bad is the compressor, often a victim of age, wear or neglect. 

A technician will also check to see that the blower is working correctly.  That's what blows that cool air into the cabin.  Sometimes the motor will fail, a relay will go bad or a fuse will blow.  As you can see, there are lots of different parts involved here! 

The good news is that your vehicle's service facility has the special equipment to recover the refrigerant and check the system's pressure, both vital to properly servicing the air conditioning system.

As with many vehicle components, regular maintenance can go a long way to minimizing problems in the air conditioning system. It can reduce the chance of the compressor having to be replaced, too.  Pretty cool, huh?

Gilmore's Auto Service
2151 N Broadway
Walnut Creek, CA 94596
(925) 939-9430
http://www.gilmoresauto.net