AUTONET TV

Start Me Up (Ignition Systems)

When you start up your gasoline engine car, you may not know that it's using the same ignition principles as it has for decades.  You have spark plugs that require enough power so a spark can jump across a gap at its tip.  Years ago, a vehicle's 12-volt system had to produce 15,000-25,000 volts to do that, so engineers came up with something called an ignition coil that bumps up the voltage. It also has to be done at just the right interval called timing.

The first systems had a distributor, a mechanical device with a rotating disc that switched the power to the ignition coil on and off.  That higher voltage then was sent to the spark plugs at the correct time interval. But the mechanical "points" had to be replaced and adjusted every 12,000 miles/20,000 kilometers.  Engineers later replaced the switching mechanism with solid state ones, but they still needed replacement after 120,000 miles/200,000 kilometers.

The next evolution came in the 80's when the distributor was replaced with a couple of sensors which talked to a computer.  This "DIS" (distributor-less automotive ignition system) was a big advance.  Plus, it didn't use just one ignition coil for all the cylinders.  It had coil "packs" that each provided spark to two cylinders.  That way, the voltage could be boosted even higher, to 30,000 volts, which helped engines be able to ignite a leaner fuel/air mixture.

Recently have come even more improvements.  Now instead of coil packs, there's a coil that's attached to each spark plug.  No more spark plug wires means less maintenance. Plus, a stronger, hotter spark of 50,000 volts can make an engine more reliable, increase fuel economy and reduce emissions.

No matter what ignition system your vehicle uses, your vehicle service facility has a staff of technicians trained to work on the latest technology.  Make sure to have your vehicle maintained regularly so you can take full advantage of these modern engineering marvels.

Matt Davis Auto
875 US Highway 70 W
Garner, NC 27529
(919) 600-5125
http://www.mattdavisauto.com

The Daily Grind (Grinding Noise)

If your vehicle makes a grinding sound when you turn the steering wheel, it's speaking to you.  No, really, it is.  So listen to what it's saying and you could avoid a much more costly repair down the road.

A grinding sound coming from the front of your vehicle when you are turning can offer some very informative clues as to what's going on.  One cause could be that there's a problem with the mechanical linkage that enables you to turn the wheels.  Another is that the hydraulic system that makes turning the steering wheel easier may have its own problems. 

Think of it.  Hydraulic power steering has many components that need to work in tandem.  The power steering fluid may be too old and contaminated.  Or its level may be low. That may be caused by a leak somewhere in the system. A technician can check things over to find out exactly what's happening.

Other causes of grinding while turning can be problems with the suspension in the front.  You may have a failing CV (constant velocity) joint.  It could be your brakes are partially engaging while you are turning.  That metal-on-metal sound is never a sign that things are working just the way they're supposed to.

To a technician looking to pinpoint the problem with your vehicle, it's not a daily grind at all.  Experience and training will help her or him zero in on what's causing the noise and get you back on the road. Maybe you can enjoy your sound system more after that distracting background noise has disappeared!

Matt Davis Auto
875 US Highway 70 W
Garner, NC 27529
(919) 600-5125
http://www.mattdavisauto.com

A Clean Start (Battery Cleaning)

You may be fanatical about keeping the outside of your vehicle clean.  But what about what's under the hood? Have you ever thought about how dirt and grime may be affecting your engine's components?

One of the most important parts under your hood to keep clean is your vehicle's battery.  With a daily barrage of dirt and moisture, outside parts of your battery can corrode, namely the cables and terminals.

Gases vented by batteries can also promote corrosion.  That can create connection problems and affect your vehicle's electrical system.  If corrosion is not cleaned off, it may damage wires and terminals so badly that they will stop properly conducting electricity.  At that point, they may need replacing.

When you bring your vehicle to us for a battery inspection and cleaning, we will remove any corrosion and put corrosion-resistant protection on each post. A technician will also visually inspect your battery.  Plus, we can test how much life is in your battery as part of a more comprehensive battery service. 

Batteries don't last forever and should be regularly cleaned, inspected, and tested.  Usually, they'll need to be replaced anywhere from three to five years after they were first installed, but their lifespan depends on how, where, and how much you drive.  Your battery is a very important component of your vehicle.  Keep yours in tip-top shape, and it's less likely to let you down when you need it most.

Matt Davis Auto
875 US Highway 70 W
Garner, NC 27529
(919) 600-5125
http://www.mattdavisauto.com

Power Failure (Broken Power Seat)

Know anyone who doesn't love a power seat in an SUV, a car, truck or van? They're convenient and precise in their adjustments.  But when they break, oh, what a pain.  Not only is it inconvenient, it may leave your seat position too close to the steering wheel or too far from the pedals.  This is a must-fix problem.

There are many things that cause a power seat to fail:

• Seat controls.  These are either at the side of the seat or in the door.  Both are places that can be exposed to moisture or other contaminants.  When the controls stop working, they usually need to be replaced.
• Seat motor.  Electric motors are what make a power seat move, and sometimes they fail.  Sometimes they just get worked to death and die of old age.  Replacement is the most common remedy.
• Fuses. A power seat is, after all, powered by electricity and all vehicle power systems have fuses to protect them.  A technician can determine which fuse may have blown and replace it.  But it's also important to figure out what caused the fuse to blow and deal with that, too.
• Wires.  There are wires under the seats that move when you move the seat.  Sometimes they get stretched, kinked or ripped.  In a power seat malfunction, it may be a wiring harness that needs to be replaced.
• Gears.  They help the seat move and may need to be realigned or replaced.
• Obstructions.  Yes, a piece of trash or a kid's toy has been known to jam up the works of a power seat. Taking them out of the mechanism may get your seat working again.

Most people pay extra to have power seats in a vehicle. So make sure you keep that convenient feature working. And don't forget that it's a safety issue, too.

Matt Davis Auto
875 US Highway 70 W
Garner, NC 27529
(919) 600-5125
http://www.mattdavisauto.com

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.

Matt Davis Auto
875 US Highway 70 W
Garner, NC 27529
(919) 600-5125
http://www.mattdavisauto.com