What Is A Differential And Do You Have One? - 9/7/2010

With front-wheel drive being so common these days in Edenton, NC, the differential is just taken care of during a transmission service, so most folks in Edenton, NC 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 mind for our Edenton customers. So it's not uncommon for people to not know they have a differential let alone know that it needs service.

Call Colony Tire at 800-22-TIRES for information about differential service, or stop by our Edenton, NC auto center at 1415 N. Broad Street 27932.

To better understand what a differential does, think about our local Edenton 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 Edenton, NC area weigh between three and six thousand pounds – 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 breakdown over time. So manufacturers recommend intervals for replacing your differential fluid.

Your Edenton, NC technician at Colony Tire will drain the used fluid and check it out for metal bits, which could be a sign of excessive wear on the gears. Then he'll replace the fluid and install the additives if necessary.

Your Colony Tire service advisor can look up the manufacturer's recommended service interval or you can check your owner's manual. Give us a call at 800-22-TIRES for more information about your differential service.

Deciphering the Colony Tire Menu Board - 8/27/2010

Let's talk about deciphering the auto service menu board. Edenton, NC service centers like Colony Tire 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 Colony Tire a call at 800-22-TIRES to learn of the many services we offer, or stop by our Edenton, NC auto center at 1415 N. Broad Street 27932.

First remember that all of these services are recommended by vehicle manufacturers. They set how often or at how many miles 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 Colony Tire 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 Colony Tire 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 over looked.

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.

Contact Colony Tire, your Edenton, NC auto repair center, by calling us at 800-22-TIRES.

Breathe Deep With Your Cabin Air Filter - 8/24/2010

Bad air quality while you're driving around Raleigh is nothing to sneeze at. But seriously, more and more vehicles these days come equipped with a cabin air filter. Since they're fairly new on the scene, a lot of folks don't know about them yet.

These filters clean the air in the passenger compartment, or cabin, of your car or truck. They do the same job as the furnace filter you have at home. They can filter out particles as small as thee microns. By contrast, a grain of sand is about 200 microns.

So your cabin air filer can clean out dust, pollution, pollen and spores, to keep the air in your car nice and clean. And just like your furnace filter, they need to be replaced when they get dirty. Check your owner's manual, but they typically need to be replaced at around twelve to fifteen thousand miles.

The filter is usually either under the hood or under the dashboard. Some are a little tricky to get to, so you'll want to have your Edenton NC service center, Colony Tire, take care of replacing them.

As we said, many people don't realize they have a cabin air filter and go to their shop complaining about a funky smell in the ventilation system. It turned out to be a cabin air filter that was long overdue for replacement – really dirty and starting to smell. A quick replacement and they were on their way and smelling fine.

People who are allergy sensitive can really benefit from a cabin air filter, as it keeps allergens to a minimum. If you're one of them, you'll want to stay on top of your filter replacement schedule.

Of course if you do a lot of driving in dusty or polluted conditions, you'll need to change your cabin air filter more often.

Edenton Customer Detective Work - 8/17/2010

One might say the most challenging part of being an automotive service technician at Colony Tire in Edenton NC is diagnosing a problem before it can be fixed.

Cars are made up of a bunch of complex systems. There usually could be a number of reasons for any given symptom. So it's challenging to track down the actual cause of the problem. And it can be frustrating for the vehicle owner because it can take time and money to get to the bottom of a problem. If it's not something obvious, it's easy for the customer to focus on the fixing and not the diagnosing.

Let us introduce you to something we'll call Customer Detective Work – that is helping your Edenton NC technician find clues to what's wrong.

We start with the detective basics: What, Where and When. Play along with me. You come in to Colony Tire and your car is making a funny sound.

• Q: Where's the sound?
• A: Around the right front wheel.


• Q: What kind of sound?
• A: Kind of a clunk, clunk sound.


• Q: When do you hear the sound?
• A: When I turn and accelerate.


• Q: Right and left? Forwards and back?…

Do you see where we're going? You're gathering additional information to help your Edenton NC technician know where to start. Based on your car and the tech's experience, he'll know where to look and can start with the obvious suspects.

You can see how that would be more helpful than dropping the car off with a note that says making a funny noise.

When you think you need to bring a vehicle in, make some notes about the problem. Rather than just saying it's leaking, tell the tech the color of the fluid, and approximately where under the car you see the puddle.

Things like 'the car is stalling or sputtering' are often very hard to diagnose because they're intermittent. They may not happen every time you drive and usually aren't happening when you actually bring the car in. So, it is a big help for you to describe what's happening in as much detail as possible.

Your Edenton NC technician at Colony Tire will need to be able to duplicate the problem if possible so he needs to know details, like 'it stalls after it's been driven for about 20 minutes and I go over 50 miles an hour'.

If the tech can experience the problem personally, he's better able to make a diagnosis and repair. And, then test to see if the repair solved the problem.

Stop It! You Need Good Brakes - 8/10/2010

Good brakes are obviously very important. If you've ever had your brakes go out while you're driving around the Chesapeake area, you'll know how terrifying it can be. Today we'll focus on how to tell when you have a brake problem, and how to make good repair choices.

Often, the first indication that something's wrong with the brakes is an unusual sound. It could be a squeal, chatter or grinding sound.

Some brake pads have a little piece of metal embedded in them that will make a squeal or chirping sound when the brake pads have been worn down to the point that they need to be replaced. It's an early warning indicator.

When you hear that sound, schedule an appointment at Colony Tire soon.

Now a chattering sound is more urgent. That usually indicates that something is loose. It could be a brake pad or even the brake calipers. If one of those parts falls off, you could have some serious trouble stopping the vehicle. It would be a good idea to park it until you can get into the shop.

A grinding noise usually means that the brake pad is completely worn away and the metal parts of the brake are rubbing directly on the metal brake rotor. That means the rotor is being damaged and will need some work. More on that later.

Another warning sign is that your brake pedal may feel soft and spongy – or it may even feel very hard to push in. Both could mean trouble. And of course, you may get a dashboard brake warning light.

Now when it comes time to replace your brake pads, you have a choice to make. You can get the same pads that came standard on your vehicle. You can expect the same performance and durability as with the pads that came on the car from the factory.

Now you can also get a budget brake pad. Sometimes drivers insist on lower cost pads. That's OK if the budget demands it, but you need to be aware of the trade offs. Lower grade pads are usually noisier, so you'll have to live with more noise when you apply the brakes. They also tend to generate a lot more brake dust, you know, that black dust that accumulates on your wheels. And they probably won't last as long either. In our opinion, that's a lot of compromise for just a few dollars in savings.

You can also choose to buy premium brakes pads. These perform at higher specifications than the factory pads. You can expect quieter operation, less brake dust and better stopping power.

Now, getting back to the rotors. The rotors are the discs that the brake pads clamp down on to stop the vehicle. If you've been driving with completely worn brake pads, you've scratched grooves into the rotors. If the grooves aren't too deep, the rotor can be resurfaced. A thin layer of metal is cut off the surface of the rotor to make it smooth again.

Now, if the grooves are too deep or if the rotor has already be resurfaced before, there may not be enough material to resurface and still have a rotor that's thick enough to safely stop the vehicle. In that case, the rotor will have to be replaced.

Something that's often overlooked is the brake fluid. Your manufacturer has a recommended schedule for evacuating the old brake fluid, cleaning the system and refilling it with fresh brake fluid. This is really important to brake performance.

So here's the bottom line: if you suspect, inspect. If you notice any of these warning signs, have your brakes inspected. Your advisor can help you make the repair decision that's right for you.