AUTONET TV

Not-So-Smooth Operator (Transmission Signs of Trouble)

You are heading down a flat, newly paved street when all of a sudden you feel it.  Your vehicle jumps a little bit when you're accelerating and changing gears.  You know it's not the surface of the road because it's smooth as silk.  So what did you just feel?

That kind of jumping—or grinding or slipping—during gear changes could be a sign of trouble in your automatic transmission.  And it's important to get it checked out fairly soon because some transmission problems that aren't fixed early can lead to more involved and expensive repairs.

By far most vehicles on the road in North America have automatic transmissions, and they are workhorses.  Unlike early cars with balky, hard-to-shift manual transmissions, the latest automatics allow you to drive without having to even think about gear changes.  But you should know about a few signs of trouble to look for if they ever start showing up.

• When you first get going and shift your vehicle from Park into Drive, do you feel a slight pause?
• How about when you shift into Reverse?  Is there a little lag?
• Does your vehicle sometimes shake when you're traveling down the road?
• Do you smell something burning in your engine compartment?
• Do you hear a clunk when your vehicle shifts?
• Do you have spots of a reddish or brown, oily fluid in the driveway under your vehicle?

If you do, these are worth getting checked out at our service center.  When automatic transmissions start to show signs of wear and age, it can be because of a number of reasons.  They can be caused by your transmission fluid getting old and contaminated, or its level may be low.  The gears can be worn.  You may have a leak somewhere in your transmission.  Or transmission problems might be caused by a computer problem.

Transmission issues aren't always expensive to repair.  Sometimes there may be a leak in a hose or gasket.  Or a computer needs to be reset.  Other issues may be much more involved.  This is why it's important to get your vehicle checked out when you do notice something doesn't feel, look, shift or smell quite right.  Everyone wants their automatic transmission to be a smooth operator.

McLearen Shell
3043 Centreville Road
Herndon, VA 20171
(703) 318-7744
http://www.mclearenshell.com

Automotive Tips from McLearen Shell: Rotor Problems

The brake rotor, or disc, is attached to your wheel. The brake pads rub on the rotor to slow your car when you are driving in Herndon.

Rotors can warp, crack or become misaligned. They can also be damaged by worn out brake pads that scratch grooves into the surface. These conditions result in less contact surface for the brake pads, leaving you with reduced braking power.

Over time and miles, rotors can also wear down below safe specifications. It is important for Herndon drivers to know that simply replacing brake pads on a wheel with a bad rotor will not solve the problem. Depending on their condition, rotors may be resurfaced or replaced.

Brake noise or a pulsation in the brake pedal are signs of potential brake problems that should be addressed right away. If you have any brake concerns, please have your friendly and professional McLearen Shell tech perform a thorough inspection.

Give us a call.

McLearen Shell
3043 Centreville Road
Herndon, VA 20171
(703) 318-7744
http://www.mclearenshell.com

Wheel Balancing at McLearen Shell

So you love your job, and your family life is great. Congratulations! You have achieved balance. But can you say the same for your wheels? Herndon drivers can tell if their tires are out of balance by vibrations at higher speeds on VA roads. If one of the front tires is out, you feel the vibration in the steering wheel. If it's a back tire, you'll feel the vibration in your seat.

Tires and wheels are pretty heavy. When a tire is mounted on a wheel at McLearen Shell, it is usually not perfectly balanced. So the technician will spin the tire on a machine to determine where it's too heavy. He will then place weights on the wheels in strategic locations to balance it out. When a tire is out of balance, it actually bounces down the road instead of rolling smoothly. Since the average size tire rotates at about 850 revolutions per minute at 60 mph/97 kph, it is actually slamming into the pavement 14 times a second. That's where you get your vibration.

Most people in Herndon are surprised at how smoothly their car rides after balancing all four wheels.

Most high-quality tires sold in Herndon hold their balance pretty well. They just get out of balance gradually with normal wear and tear. If you suddenly feel a vibration, it is probably because you lost a wheel balancing weight along the way. Definitely get a balance at McLearen Shell in Herndon if you feel a vibration, change your rims or have a flat repaired. Putting off a needed balance job leads to excessive and tire wear, wear to your shocks, struts, steering and suspension parts. Wheel balancing not only improves your ride and handling, but also can save you some repair bills and possibly an accident. Additionally, you will get better fuel economy.

Some Herndon area drivers have their tires balanced at every rotation. Others do it every other time. Check your owner's manual for your requirements, or ask your friendly service advisor at McLearen Shell. Doing this will put you on the path to mechanical wheel balance.

McLearen Shell
3043 Centreville Road
Herndon, VA 20171
(703) 318-7744
http://www.mclearenshell.com

Beginning to See the Light (Check Engine Light Diagnostics)

It's a light many drivers fear they'll see turn on at the most inopportune time.  It's the one on the dash that says "Check Engine," "Service Engine Soon," or it may be simply an engine-shaped light. Your first instinct may be to pull off to the side of the road and turn off the engine.

The truth is that Check Engine light can be pointing to problems as simple as a loose gas cap. But it could be as serious as a severely misfiring engine.  Don't ignore it because it's there to help you avoid an expensive repair it is designed to alert you to, to tell you something's not quite right.

Your vehicle has a connected system of computers and sensors constantly checking to see that all systems are working the way they should. If something isn't, the system will turn on the Check Engine light.

If it's flashing, that could be serious. Look at some of the other warning lights or gauges such as heat or oil pressure. They could be telling you your vehicle's problem should be checked right away. In that case, if you can, safely pull off the road and shut the vehicle down. If your vehicle loses power and the Check Engine light is on, try not to push the demands you are making on the engine, such as towing or accelerating hard.

Simply put, a flashing Check Engine light should be checked out by a professional as soon as possible.

If the Check Engine light is on steadily, manufacturers say it means there's a problem, but it probably doesn't require immediate service.  The system is designed to remember the problem it found and store it (as a code) so it can be retrieved later.

When you do bring your vehicle in to have us see what's behind the Check Engine light coming on, we’ll hook your vehicle up to a diagnostics tool that can reveal the clues the engine's computers have stored.  It takes a trained technician to understand those clues, like a doctor who can interpret a patient's symptoms and come up with the correct diagnosis. Some newer vehicles can even be checked remotely.

Once we figure out the problem and repair it, you'll be back on the road again. It's nice to know the Check Engine light is your sentry, standing by to alert you the next time you begin to "see the light."

McLearen Shell
3043 Centreville Road
Herndon, VA 20171
(703) 318-7744
http://www.mclearenshell.com