AUTONET TV

It's (Not) Complicated (Engine Air Filter)

While many components of your vehicle are complex and composed of lots of mechanical and electrical parts, there's one that isn't complicated but still important.  It's your engine air filter.

(And, we should point out, the engine air filter isn't to be confused with the cabin air filter.  The cabin air filter cleans air that goes into the passenger compartment while the engine air filter cleans air that goes into the engine itself.)

Why does your engine need a filter? Think of all the stuff–dirt, dust, and debris in the air¬–that gets kicked up on the road.  If that were to go unfiltered into your engine, it could damage other components.

There are many different materials used in an engine air filter, including paper, cloth (frequently cotton), and other synthetic fabrics.  The material is usually folded tightly to maximize the filtering capability over a relatively small surface.  

Before computers were employed to determine the proper mix of air and gasoline, a dirty air filter could contribute to a decline in fuel economy.  But a study of engine air filters done by the U.S. Department of Energy in 2009 found that in modern fuel-injected engines, computers can maintain the correct air/fuel mix even when an engine air filter is really dirty, minimizing effects on fuel economy.

That same clogged air filter, though, can affect your vehicle's performance, mainly how much power and acceleration it delivers.  In testing three different vehicles, a dirty air filter made the vehicles slower by about 6-12%.  That's something you'd definitely notice if you were driving.

But it happens slowly, over the course of several months, so you might not even know your engine air filter is dirty unless you bring it to us and have a technician inspect yours.  

There are many different types of engine air filters, from the ones made by the original vehicle manufacturer to aftermarket ones.  Some can increase your engine's performance; some can be washed and re-used but are generally more expensive.

Your service advisor can recommend several options for you, depending on the type of vehicle you drive and your driving habits.  Dirty, dusty roads will require more frequent engine air filter changes than cleaner drive routes, and each vehicle manufacturer recommends when your filter should be changed.  Keeping it clean will help your engine breathe a little bit easier.

TJ's Auto Center Inc.
3427 E. State St.
Rockford, Illinois 61108
815-399-2886

Timing is Everything (Timing Belt)

Talk about exquisite choreography; it happens under the hood of your vehicle every time you take a drive.  Your engine’s many complex parts must work exactly together.  One key is a part called a timing belt, which enables the synchronizing of two of your engine’s components, the camshaft, and the crankshaft.  

The timing belt coordinates the valves in your engine to open and close at the appropriate time to get exhaust out of the engine’s cylinders. Timing belts may also power the water pump and the oil pump.  The belt is made of rubber.  Some engines use a timing chain (made of metal). 

Your vehicle’s manufacturer recommends an interval after which you should have your timing belt or chain replaced, and that service should be part of your vehicle’s regular maintenance.  It’s always better to replace it before it breaks rather than after.  After all, if your timing belt breaks while you’re driving down the road, it throws off the whole sync of engine parts and can cause major damage to the type of engines most commonly used in vehicles today.

It's also important to remember that a timing belt is made of rubber, and rubber deteriorates with time, no matter how much use it gets. Have us look at your timing belt to see if it’s time to get it replaced.  

Here are some signs to look for that will let you know if your timing belt is failing. You might have trouble starting your vehicle, it may misfire or black smoke may come out the tailpipe. If you notice any of those symptoms, bring your vehicle in and have us take a look right away.  When it comes to your engine, timing is everything.

TJ's Auto Center Inc.
3427 E. State St.
Rockford, Illinois 61108
815-399-2886

Timing is Everything (Timing Cover Replacement)

There’s an important part in your vehicle that shields your timing belt, timing chain or cam belt from the debris and gunk that can be kicked up from the road.  It’s called the timing cover.  It’s important because the timing belt or chain is what coordinates parts of your engine called the camshafts and crankshaft.  When they’re in sync, all runs smoothly.  When they’re not, it can cause some serious engine problems.

If your vehicle has a timing belt, without the protection of the timing cover, that belt can come loose from the timing gears or break.  If your vehicle has a timing chain, the cover keeps engine oil circulating around it which lubricates it.  When that starts to leak because of a bad gasket, the chain may not be getting adequate lubrication.  

If your vehicle has a timing cover problem, you may notice engine oil leaking if a gasket is not sealing tightly.  You may hear a strange metallic sound coming from the engine.  Another sign that timing is off is that you notice you’re losing power when you’re going up a hill. 

Usually, the timing cover will not wear out. But if you drive on roads where you’re getting a lot of debris and dirt kicked up into your engine compartment, the timing cover can get damaged and affect your vehicle’s operation.  It eventually could lead to engine problems, so if you notice any of the symptoms mentioned, have one of our technicians inspect your timing cover and gasket.  

TJ's Auto Center Inc.
3427 E. State St.
Rockford, Illinois 61108
815-399-2886

When Your Tires are Tired (Tire Replacement)

Tires are so reliable these days that few drivers pay much attention to them.  But tires wear out.  They have a tough job since they are the only point of contact between your vehicle and the road.  They have to get your vehicle going from a stop, keep it going, make sure it is headed in the direction you want it to go, and –importantly – slow and stop it.  

The only time many drivers think about their tires is when there's a problem, such as a flat.  Or, they may lose control when they find their vehicle isn't stopping or steering like it used to.  One major safety organization estimates that 1 out of every 11 crashes is related to a tire issue.  

Many of those problems are caused by tire tread wearing out.  The rubber is worn off by friction after hours and hours on roads.  The sidewalls can also be damaged by your tires hitting curbs, potholes, or other debris. Plus, rubber ages as time passes.  We recommend you let us inspect your tires periodically so we can spot potential problems before it's too late.  

When it's time for you to replace your tires, it's important to know which type is right for your driving habits and what environments your tires usually encounter.  The most common tires are called all-season. As the name says, they are pretty good in every season and their tread lasts a long time.  In other words, they're good all-purpose, all-around tires.

Another option is a performance all-season tire, which has a little more grip but won't last as long. Then there are ultra-high-performance tires (UHP) which have wonderful grip and handling but an even shorter lifespan. They also aren't the greatest in slippery conditions.

For those who live in more extreme climates, especially where there is a lot of snow, winter tires are definitely worth considering because their performance in cold, snowy conditions can make a huge difference in traction, improving steering, and stopping.  Some places require winter tires during certain periods of winter.

Don't underestimate how much of a difference tires can make on your vehicle.  Sure, you probably don't pay much attention to them, but they are one of the most important investments you can make, and they can pay valuable dividends when you need them to come through for you.

TJ's Auto Center Inc.
3427 E. State St.
Rockford, Illinois 61108
815-399-2886