AUTONET TV

What Is a Differential and Do You Have One?

With front-wheel drive being so common these days in CHERRY HILL, NJ, the differential is just taken care of during a transmission service, so most CHERRY HILL drivers don't even have to think about it. And rear-wheel drive differentials don't need to be serviced for years, so it's understandable that it's not something on the top of CHERRY HILL customers' minds. It's not uncommon for drivers to not know they have a differential let alone know that it needs service.

Call Joe D'Auria's Auto in CHERRY HILL at (56.427.9422 for information about differential service, or stop by our CHERRY HILL, NJ, auto center at 1401 BRACE RD, 08034.

To better understand what a differential does, think about our local CHERRY HILL high school track. There are lanes marked off on the track. For the longer distance races, the starting lines are staggered. The starting lines for the outside lanes are ahead of the starting lines for the inside lanes. That's to compensate for the longer length of the outside lanes. Staggering the starting lines means that each runner has the same distance to run.

The differential compensates for the difference in speeds between the inside wheel and the outside wheel in a turn, because they have to travel together through slightly different distances.

It's a very important function. When you think of it, all the power to get a vehicle moving goes through the differential. Most cars in the CHERRY HILL, NJ area weigh between 3,000 and 6,000 pounds (1,400 and 2,800 kg) – trucks even more. The power from the engine goes through the transmission and then through the differential to the drive wheels.

That's a lot of work and requires very heavy duty parts. And those parts need protection. The differential fluid lubricates the gears in the differential and keeps them cool.

The fluid eventually gets dirty and worn down. Some kinds of differentials require special additives that break down over time. So vehicle manufacturers recommend intervals for replacing your differential fluid.

The professionals at Joe D'Auria's Auto will drain the used fluid and check it out for metal bits, which could be a sign of excessive wear on the gears. Then they’ll replace the fluid and install the additives if necessary.

Your Joe D'Auria's Auto service advisor can look up the vehicle manufacture's recommended service interval or you can check your owner's manual. Give us a call at (56.427.9422 for more information about your differential service.

Joe D'Auria's Auto
1401 BRACE RD
CHERRY HILL, NJ 08034
(56.427.9422
http://www.autorepaircherryhill.com

Why Is My Check Engine Light On?

The Check Engine Light strikes fear into the hearts of some CHERRY HILL drivers, and is totally ignored by just as many. Just what it means is a mystery to most people.

Let's get the urgency issues out of the way first. If your Check Engine light is flashing, that means that something is wrong that could cause engine damage. Naturally, you need to get that taken care of right away. If your check engine light is flashing, you shouldn't drive at high speeds, tow or haul heavy loads. Take it easy all the way to your CHERRY HILL service center.

If the light is glowing steadily, you should keep an eye on it for a day or two. If the light doesn't go off, schedule an appointment with your friendly and knowledgeable pros at Joe D'Auria's Auto to get it checked out.

Some more information on how the Check Engine light works may be helpful for CHERRY HILL drivers. Most of your engine functions are controlled by a computer, not surprisingly, called an engine control computer. The computer is able to adjust many engine parameters for environmental conditions, engine condition and even the way you drive.

In order to make these adjustments, the computer relies on a network of sensors to provide data. The computer knows the proper operating range for each sensor. When a sensor reading is out of range, the computer runs some tests and may turn on the vehicle's Check Engine light.

A simple example is a loose or missing gas cap. This may cause one of the sensors to read out of range. The computer doesn't know if it's a serious condition that caused the reading or just a loose gas cap, so it stores a trouble code and turns on the Check Engine light.

Now when you tighten up the gas cap, the sensor readings will be in the correct range. The computer will keep checking on the report for a day or two. Since a bad reading didn't come up again, it turns off the Check Engine light. The computer will also try to make adjustments to compensate for some readings. If it can do so, it'll then turn off the Check Engine light.

If the problem can't be resolved then the light will remain on, and you should get your vehicle looked at. Your friendly and knowledgeable pros at Joe D'Auria's Auto will plug a scanner into the on-board diagnostic port and read the trouble code stored in the computer. The trouble code will give the technician a starting place as he diagnoses the cause of the problem.

Joe D'Auria's Auto
1401 BRACE RD
CHERRY HILL, NJ 08034
(56.427.9422
http://www.autorepaircherryhill.com

Your Vehicle is Talking to YOU (Service Warning Signs)

Your vehicle may be like that famous battery bunny, the one that just keeps going and going.  But while it may seem sometimes like you never need to take your vehicle in to be worked on, there are some things you should keep your eyes, ears and nose out for. They are warning you about something that needs attention at your vehicle service facility.

• If a warning light is on, don't ignore it; do something about it.  There are warning lights for battery, oil, engine heat, tire pressure… you name it.  And the manufacturer put them there for a reason.  They're telling you something isn't normal. So when one goes on, have it checked out soon, especially the blinking Check Engine light.  The earlier you have any warning light issue diagnosed, the more likely you are to avoid a more serious problem.
• If your vehicle is vibrating or shaking, it's not only annoying, it could signal trouble.  You can bet your vehicle didn't do that when it came out of the factory! If you can feel a vibration in the seat of your pants or shaking in the steering wheel, head on over to your service facility and have them diagnose what is causing it.
• Smoke coming out of anywhere in your vehicle is a signal (smoke signal, get it?) that there may be a troubling issue.  Likewise if you can smell something burning (like oil), the nose knows there's something amiss.  Time to find out what.
• If you aren't getting the distance you used to out of a tank of gas, it may not simply be your lead foot. A lot of vehicles will give you a digital readout of your latest mileage.  If your fuel economy takes a dip, take a trip over to your service facility.  You might have a sticky brake caliper… or it might be something as simple as your tires need more air.
• Yes, you know the dreaded puddle of something under your vehicle can be a bad sign.  It could smell sweet, it could feel oily.  But it means something is leaking.  Go get it checked.  Sooner is better when it comes to locating the source of a leak.
• If your brake pedal travels further than it used to while stopping, that could be compromising your ability to stop safely.  Also, if the brakes are making odd sounds, pulsating, grinding or squealing, they're screaming at you for attention.  Proper braking is a must for your safety and those drivers around you.

An old 80s TV show called "Knight Rider" featured a talking car.  You already have a vehicle that's telling you things all the time.  Give it a listen and it will keep you going safely down the road for many years to come.

Joe D'Auria's Auto
1401 BRACE RD
CHERRY HILL, NJ 08034
(56.427.9422
http://www.autorepaircherryhill.com

Deciphering the Joe D'Auria's Auto Menu Board

Let's talk about deciphering the auto service menu board. CHERRY HILL, NJ, service centers like Joe D'Auria's Auto have a board that lists the routine services they provide. But some people don't know what these services really are unless they ask. Let's go down a typical list, in alphabetical order, starting with air conditioning service.

Feel free at any time to give Joe D'Auria's Auto a call at (56.427.9422 to learn of the many services we offer, or stop by our CHERRY HILL, NJ auto center at 1401 BRACE RD, 08034.

First remember that all of these services are recommended by vehicle manufacturers. They set how often or at how many miles/kilometers the service should be done.

Air conditioning service involves purging the old refrigerant and capturing it for proper disposal. Then fresh refrigerant is installed. The fresh refrigerant will lubricate the system and will also help it cool better.

Alignment. Service centers like Joe D'Auria's Auto make sure all four wheels are lined up and track with each other. This reduces tire and suspension wear and improves safety and handling.

Battery service. Service centers like Joe D'Auria's Auto inspect the battery for corrosion, leaks or damage. Test the battery's ability to hold a charge. If the battery's still strong, clean it up. If not, replace it.

Brake service. This could be two things. A brake inspection to see if the brakes are working well mechanically and to see if the pads are still safe. If not, replace the pads and make any repairs that might be in order.

The other thing is to evacuate the brake fluid, clean out the system and replace it with fresh fluid. This is important, but often overlooked.

Cabin air filter. The cabin air filter is the filter that cleans the air that comes into the passenger compartment. It works like the filter on your furnace at home. It gets dirty and needs to be changed often.

Cooling system. This is the cooling system for your engine. Replace the old coolant with fresh to protect your radiator and other cooling system components from corrosion.

Differential service. Every vehicle has at least one differential. They don't require service very often, so people don't think of them much. The differential transfers power from the drive train to your wheels. Drain the old fluid and add fresh lubricant.

Engine air filter. This filters the air that's burned in the engine. It also gets dirty and needs to be replaced often.

Fuel filter. This filter cleans the fuel before it gets to the engine. Like the other filters, it too gets clogged and needs to be replaced in order to maintain good flow.

Give us a call.

Joe D'Auria's Auto
1401 BRACE RD
CHERRY HILL, NJ 08034
(56.427.9422
http://www.autorepaircherryhill.com

Too Hot to Handle (Vehicle Overheating)

In the hot weather, seeing steam coming from the engine compartment is something we all dread.  No one wants that to happen to them. But if you know the signs of overheating and how to deal with it, you may be able to reduce the risk of damage to your vehicle, maybe even prevent getting stranded on the road.

Besides the steam coming out of the engine compartment, here are a few signs of overheating.  Your vehicle has a heat gauge that may have a needle that can go into a red zone or up to the "H" (for High) position.  You may smell odors, perhaps a burning (could be hot oil) or a sweet smell (engine coolant leaking). 

When you encounter any of those signs, you know you have to do something to keep the engine as cool as possible to avoid potentially catastrophic damage.  Turn off the air conditioning and turn up the heat.  While that last part may sound odd, it helps draw heat out of the engine. 

If you can do it safely, pull off the road to a spot away from traffic.  Turn off the engine so it can cool down for a few minutes.  You may want to call for help at this point, then switch on the key to "accessory" position to see if the engine has cooled down to the normal range.  You may have to have your car towed to a service facility or, if there's one nearby, you may be able to slowly drive to it.  But keep your eye on the heat gauge and immediately stop if it starts to overheat again. 

The best hedge against engine overheating is regular maintenance.  When the cooling system and other engine components are working like they should, your chances of an overheated engine are drastically reduced.  Your service facility will keep their eyes open for leaking hoses, cracked belts, rusted pipes and other things so they don't fail at the most inopportune time.

Joe D'Auria's Auto
1401 BRACE RD
CHERRY HILL, NJ 08034
(56.427.9422
http://www.autorepaircherryhill.com

CHERRY HILL Car Owners Ask: Why Do I Need to Change My Serpentine Belt?

Any CHERRY HILL driver who understands preventive maintenance knows that “if it ain't broke, don't fix it” is bad auto advice. Replacing a part before it breaks is much less costly for CHERRY HILL residents than repairing the engine damage that comes after a part breaks or fails. A good example of this is the serpentine belt.

The serpentine belt gets its name because of its circuitous path around the engine. The serpentine belt is driven by the engine and powers a number of systems, as follows:

1. The serpentine belt spins the compressor that generates the cool air for the air conditioning system.
2. The serpentine belt powers the alternator. The alternator generates electricity for use in the vehicle's electrical systems and to charge the battery. Without the alternator, the battery wouldn't last more than a few miles.
3. In many CHERRY HILL residents' vehicles, the serpentine belt runs the pumps for both the power steering and the power brakes. In other vehicles, the power steering pump may be electric and the power brakes may use a vacuum boost.
4. On many vehicles, the serpentine belt powers the water pump. The water pump keeps coolant circulating through to maintain appropriate operating temperatures. In some NJ vehicles, a timing belt runs the water pump.

When a serpentine belt fails, all of these systems fail as well, which can lead to engine impact.

Replacing parts before they break saves money for CHERRY HILL residents by preventing more repairs and the frustration of having your vehicle in the shop for an extended period of time. If you're looking for an adage to apply to good car care, you might remember the old story of how “for want of a nail, the kingdom was lost.”

Joe D'Auria's Auto
1401 BRACE RD
CHERRY HILL, NJ 08034
(56.427.9422
http://www.autorepaircherryhill.com