AUTONET TV

Making Sense of the O2 Sensor (Oxygen Sensor Replacement)

As you know, today’s vehicles rely on a lot of computers in them to keep them running clean and efficiently.  Those computers depend on information delivered by several sensors throughout the engine and exhaust system.  And one of the most important is the oxygen sensor.  

Known as the O2 sensor for short, it looks for too much unburned oxygen that has made it into the exhaust. That signals something isn’t right with the engine’s air-fuel mixture.  The sensor sends signals to the engine’s computers, which can then make adjustments to make sure the engine is running as it was designed to.

Some vehicles can have several O2 sensors, and since they can measure oxygen at various points in the combustion/exhaust process, the computers can pinpoint where the problems lie.  For example, an O2 sensor can detect how much oxygen is coming out of the engine’s combustion chamber, and another one can measure oxygen coming out of the catalytic converter.

As you can see, it’s important that those O2 sensors are working correctly.  If they’re not, the computer is getting bad information.  Garbage in, garbage out. That can result in lousy fuel economy and excess pollution coming out of your tailpipe. It can also affect your vehicle’s performance.  Sometimes your Check Engine light will illuminate when one of your O2 sensors goes bad.  Or you may notice your engine misfiring or idling roughly. 

If you notice any of these symptoms, bring your vehicle on in, and a technician will pinpoint the trouble spot.  

McPherson Automotive
1 E Park St
Du Quoin, IL 62832
(618) 542-9203
http://www.mcphersonautomotive.net

Full Stop (Brake Master Cylinder Replacement)

When you step on your brake pedal, you want to feel confident that your vehicle’s going to stop.  If your brakes aren’t working right, it’s a risk to your safety and the safety of others on the road.  After all, you’re driving a machine that weighs thousands of pounds, and you have to be able to stop that big machine quickly and with control, especially with some of the speeds you travel on the highways. 

The heart of your vehicle’s brake system is the master cylinder.  When you apply the brakes, the master cylinder has pistons, springs, and brake fluid.  That fluid amplifies and distributes the force of your foot through brake lines to calipers at all your wheels.  Those calipers squeeze down on rotors or discs, which is what slows down and stops your vehicle.

For safety, a master cylinder has two cylinders, one for two wheels, and the other for the remaining two wheels.  That way, if there is a failure in one, you’ll still have braking power at half your wheels.

The master cylinder doesn’t last forever, of course, and here are some signs it may have problems.  When you press on the brake pedal, it feels soft and spongy.  You may see the brake light on your instrument panel go on.  You may notice brake fluid leaking, or it may be discolored. 

All of those are signs of brakes that need attention, and among the possible culprits is a master cylinder that has failed.  When you bring it in for a technician to look at, they’ll check not only the master cylinder but also the rest of the components, such as pads, discs, shoes, brake lines, and hoses.  If your master cylinder needs replacing, we’ll make sure all the other parts meet the manufacturer’s specs as well. 

Brakes are important.  Really important. Full stop.

McPherson Automotive
1 E Park St
Du Quoin, IL 62832
(618) 542-9203
http://www.mcphersonautomotive.net

McPherson Automotive Advice: Don't Overlook These 10 Automotive Services

Organization is the key to managing a busy life in IL. So setting up an annual calendar for vehicle care can keep Du Quoin residents on top of preventive maintenance. But you can't just write “oil change” every few months on the calendar. Modern vehicles have many systems that are vital to the safe operation of a vehicle, and they all need to be inspected. Du Quoin residents can't afford to overlook any of them.

The following is a list of preventive maintenance services that are often overlooked by vehicle owners in the Du Quoin area. They are not presented in any particular order.

1. McPherson Automotive Power Steering Service. Moisture gradually builds up in your power steering fluid, which can lead to corrosion in your steering system. The fluid also gets dirty, which can gum up your steering system. The fluid needs to be replaced periodically.

2. McPherson Automotive Wheel Alignment. Wheels that are out of alignment will cause a vehicle to pull to one side. This is dangerous for Du Quoin residents and can lead to accidents. Also, it causes uneven and rapid tire wear, which means tires must be replaced more often.

3. McPherson Automotive Differential Service. They are part of the drive train system that transfers power from the engine to the wheels. Damage or wear in this system can make a vehicle undriveable.

4. McPherson Automotive Cabin Air Filter. Your vehicle may or may not be equipped with a cabin air filter. Its job is to remove dust and pollen from the air that enters the passenger compartment of the vehicle. If this filter clogs, it can stink. So check your owner's manual to find out if your vehicle has a cabin air filter. If so, come visit us at McPherson Automotive and get it changed according to the recommended schedule.

5. McPherson Automotive Timing Belt Replacement. Most passenger cars and some vans and trucks have timing belts. Du Quoin residents can check their owner's manual to find out if their vehicle has one. If so, you can't drive without it. And if it breaks while on the road, you may be looking at thousands of dollars of repairs. So it is important to inspect it occasionally. If your vehicle has close to 60,000 miles/100,000 kilometers or more on it and you haven't had your timing belt replaced, then you need to find out the recommended replacement interval NOW.

6. McPherson Automotive Transmission Service. Transmission fluid gets dirty and has to be replaced. If not, you risk repairs.

7. McPherson Automotive Air Conditioning Service. The refrigerant in your air conditioner needs to be replaced periodically. This fluid doesn't just refrigerate air; it provides lubrication to the air conditioning system and conditions seals. Lack of fluid can damage components.

8. McPherson Automotive Brake Service. Even if your brakes are quiet and working well, the brake fluid still might need to be changed. Over time, moisture builds up in brake fluid. Water has a different viscosity than brake fluid, so the brakes can't compress properly when there's too much moisture in the fluid — and you shouldn't need to be told how it is to drive with brakes that are compromised. Moisture in your brake fluid can also corrode parts in your brake system, causing it to fail altogether.

9. McPherson Automotive Coolant System Service. Antifreeze is another fluid that needs to be changed regularly. If not, it actually becomes corrosive and begins to damage your cooling system. Eventually it can eat holes in your radiator.

10. McPherson Automotive Fuel System Cleaning. Over time, your fuel system just gets gummed up, which can interfere with the flow of fuel in a number of ways.

Of course, your next question should be: How often do I need to get all of this done? Well, the answer varies depending on which service we're talking about, the make and model of your vehicle, the climate where you live in IL, your usual driving conditions and your driving habits.

But don't lose heart. Your owner's manual will give you a recommended service schedule for most of the service items listed. And you can get quality auto advice from your friendly and knowledgeable McPherson Automotive service advisors to help you meet the service intervals that suit your vehicle.

McPherson Automotive
1 E Park St
Du Quoin, IL 62832
(618) 542-9203
http://www.mcphersonautomotive.net

A Turn for the Worse (Using Turn Signals)

Distracted driving is bad, you know that.  Daydreaming, talking on the cell phone, putting your makeup on in the rear view mirror.  All bad.  But there's something else that causes more than twice as many accidents, according to a recent study.  And that's people who don't use their turn signals. 

Maybe you're one of them.  One survey said nearly a quarter of drivers were just too lazy to use their turn signals.  Others said they didn't use them because they weren't really necessary.  Traffic laws may dictate otherwise, but statistics show police don't write that many tickets for turn signal violations. 

You may have encountered the driver who cuts into your lane without signaling a change.  Often, that person does it deliberately to catch you off guard so you won't invade his or her space.  And when it comes to young drivers using turn signals, one insurance company survey showed more than two-thirds of those they talked to admitted it wasn't their regular practice.

Knowing that, you may wonder why you should use your turn signal.  The reason is simple.  It lets other drivers know what you plan to do.  Driving it tricky enough with all the moving parts on the road.  The more you know what other people are doing, the more you can prepare for that with the way you drive.

How many times have you seen someone turn left without putting their turn signal on?  That's a leading cause of rear-end accidents. Not only does using your turn signal promote safety, it also shows courtesy to other drivers.

There are some drivers who don't use turn signals because their turn signals don't work.  What a lousy excuse! All of the safety equipment in your vehicle should be working; if it isn't, head over to your repair facility.  Often it's as simple as a burned out bulb or a broken wire. 

Finally, the number one reported reason for not using a turn signal is that drivers just forget to do it.  (And the ones who DO use their turn signals and forget they're on?  We won't even go there.)

Engineers put turn signals on vehicles for a reason.  They help drivers communicate with other drivers.  Using them could save accidents… and lives.

McPherson Automotive
1 E Park St
Du Quoin, IL 62832
(618) 542-9203
http://www.mcphersonautomotive.net