Without a transmission, vehicles literally wouldn’t go anywhere. Since you can’t really see the transmission in your car, it’s often misunderstood. Knowledge is power, and knowing how your transmission works will help you maintain it better.  

How Do Transmissions Work?

You likely know that there are two main types of transmissions: manual and automatic. Without getting too technical, there are several gears fixed on two shafts. As the car is shifted into different gears by the driver or a computer, the gears from one shaft engage with the ones on the other.

In manual transmissions, drivers must push down the clutch pedal to break the connection between the engine and transmission. The gears can then be moved, then the driver releases the clutch pedal and the connection is established again. It’s essentially the same process with an automatic, only the computer uses a torque converter instead of a clutch, at least in most setups.

Dual-clutches sit somewhere in the middle between manuals and automatics.  Continuously variable transmissions (CVTs) have been increasing in popularity recently, and they eliminate individual gears completely.

Toyota Recommended Transmission Service

Toyota recommends specific service schedules for its vehicles, and that includes making sure the transmission is maintained. In general, you should have the clutch components inspected and the transmission fluid replaced every 30,000 miles. Doing this will help avoid larger problems later. The service schedule for individual Toyota models can vary, so it’s always a good idea to consult the owner’s manual or speak with a trained technician.

Signs of Transmission Trouble

There are many signs that your transmission needs to be looked at. One is if it just won’t go into gear. This can include the stick on a manual not moving, or an automatic skipping a certain gear. Several potential problems could trigger this, including low transmission fluid, the wrong fluid being used and even maladjustments for the clutch linkage or shifter cables.

Another common problem is slipping gears. That means the car starts to travel or is even going down the road, but the transmission slips, making the engine race while slowing down your momentum. This is a potentially dangerous situation. You need to have the car checked over ASAP, because several issues could be the culprit.

Sometimes transmissions make noise. If that happens when it’s in neutral, there are a few possible causes. Low fluid or the wrong type can cause some bumping sounds. If the transmission is particularly noisy, it could be from serious mechanical damage, such as worn bearings or gears. If the problem includes grinding or shaking, that can be from a worn clutch, maladjustments or other worn components.

Finding bright red, sticky fluid where your car’s been parked indicated a transmission fluid leak. The source could be in one of a number of locations. A technician can usually pinpoint it fairly quickly with the vehicle on a lift. From there, it’s just a matter of figuring out the best way to patch the leak, which may or may not involve replacing some parts.

If you smell burning coming from the transmission, that’s not something to ignore. It could indicate that there’s a problem with overheating. As the fluid burns, it can’t lubricate the gears and other components properly. The problem can be triggered by dirty fluid that needs to be swapped out, or a leak caused by a bad seal.

Vehicles with a manual transmission can experience a dragging clutch. You push on the clutch pedal, but the engine and transmission are still connected, and the transmission makes a horrendous grinding noise. Often the problem is with too much slack in the linkage between the pedal and the clutch disc.

Despite the name, your check engine light coming on can indicate a problem with the transmission. Modern vehicles have sensors that trigger the warning, like unusual vibrations you can’t even feel. When you see the check engine light turn on, it’s best to bring the car in and have the code read, avoiding bigger problems later.

T3 Atlanta For Transmission Serivce

If you hear the transmission whining or humming, that can spell trouble. At the first sign of these unusual sounds, you need to have the transmission checked over. The same goes for transmissions that don’t engage immediately after you push on the accelerator pedal.

When you experience any of the above symptoms, that’s the time to contact T3 Atlanta or stop by for an inspection. Our highly trained, professional technicians can quickly and accurately diagnose the problem.  

For most people vehicle braking systems are a mystery. They step on a pedal, and the things under the wheels slow down the forward (or backward) momentum. It’s something few think about too much, until there’s a problem. By knowing a thing or two about how brakes work, you can actually spot potential problems early, which in turn reduces the size of the repair bill.

How Do Modern Brake Systems Work?

Modern brake systems actually use hydraulics. The force you apply on the pedal is transmitted to the actual brakes through a special fluid. If you open up the hood on your vehicle, you can check the brake fluid reservoir to see if it’s low. Too little fluid means the brakes won’t work as well, so it’s critical to monitor the level on a regular basis (usually once a month is sufficient).

Of course, the brake system is actually set up to multiply the force you apply with your foot. After all, it would be pretty difficult to use sheer physical strength to stop the progression of a 4,000-plus pound vehicle traveling 65 mph. The actual pedal is designed as a lever, which multiplies the force you exert. The hydraulic force also multiplies your effort, routing through the brake lines and a master cylinder before winding its way to the wheels.

If you look at cars with fairly large gaps between the wheel spokes, you can see the brake disc underneath. When the hydraulic force is applied through the system, it squeezes a caliper that sits over one part of the disc. Attached to the caliper are brake pads, which are soft enough to not damage the discs. They create friction, slowing down the vehicle.

When everything is working fine, your car will slow down predictably time and again. There are some signs of trouble you should always be on the lookout for, because having your brakes go out or even work in a diminished way is never an enjoyable experience.

Brake Fade

You might notice that it’s necessary to push down on the brake pedal further than usual to get the car to slow down or stop. This is called brake fade, and it can happen gradually, so you might not even realize what’s going on for some time. When you do, that’s a sign that something could be wrong. The brake fluid might be low, making it necessary to push the pedal further, the brake pads could be worn down, or both.

Check Your Brake Fluid Levels

Checking the brake fluid is easy enough to do by yourself, if you’re so inclined, or our technicians can look over all your fluids at once to be safe. They also can read the thickness of your brake pads quickly, telling you if they need to be replaced, or are getting close to the point that they will need to be swapped in the near future.

One possible reason for low brake fluid is a leak. It could be present anywhere in the system, which runs throughout the undercarriage. Tracking down a leak can be tricky for someone who doesn’t have the right equipment, experience or training, which is where our techs come in. Ignoring the problem can make it worse, putting you and anyone riding in the car at risk.

Turn Down Your Music and Listen To Your Brakes

You should regularly turn down your music and maybe even roll down the windows while driving. Pay attention to any noise coming from the wheels when you apply the brakes. A squealing sound might be the indicator or a metal shim in the pads. Its job is to warn you when the pads have become thin enough they need to be changed. Hearing the squealing once in a while can be normal, thanks to temporary rust or road debris buildup, but if you notice it regularly that’s a sign to have the brakes checked.

Grinding and Growling Sounds

Grinding or growling when you push on the brake pedal is even worse. This can indicate the pads are completely worn, with the discs and calipers rubbing against each other. If that’s the case, you might need new discs and pads.

Brake Pedal Vibrations

Vibrations when you push on the brake pedal can indicate that you need new discs. The heat generated by braking can warp the metal. It’s possible the sensation is from unbalanced tires or other symptoms, which is why it’s a good idea to have a tech look at the car.

Pulling To One Side

Finally, your car might pull to one side or the other when you brake. This can be from the pads wearing unevenly, which might indicate other problems that should be addressed immediately. The problem can also be triggered by debris in the brake fluid, making it necessary to have the system drained and refilled.

T3 Atlanta For Brake Maintenance and Repairs

If you have concerns about your brakes, or any other part of your car, remember that T3 Atlanta is here to help. Our technicians are highly trained professionals that can quickly and accurately pinpoint the cause of problems, saving you time and money. Contact us today or stop by so we can get started.