How the Gearbox Valve Body Works in Automatic Cars

The valve body of an automatic car gearbox may sound unfamiliar to your ears. But did you know that this component is one of the things that affects driving comfort?

For a more detailed explanation, let's look at the explanation and how the valve body gearbox works in automatic cars below.

What is the Valve Body of an Automatic Car Gearbox?

The valve body is the control center of the automatic transmission that contains a labyrinth directing hydraulic fluid to several valves, to activate the clutch or servo band that changes the gears.

In general, this valve body is the brain that allows the automatic transmission to engage and then be transmitted to the drive wheels. This component can regulate the transmission oil pressure into a gearbox.

Where the automatic transmission gearbox works fully but depends on the transmission oil pressure.

How Does the Valve Body Gearbox of an Automatic Car Work?

If you are wondering how the valve body gearbox of an automatic car works, it starts with the flow of transmission oil when the car is turned on.

When your automatic car's engine starts, the transmission oil pump generates hydraulic pressure. Then, the pressure from the hydraulic transmission enters the regulator valve body.

Eventually, the regulator connects to the ECU, which acts as the main electronic circuit in the car. Here, the ECU regulates how much hydraulic pressure is needed.

After the regulator valve body, the hydraulic pressure is distributed to several main parts of the gearbox, namely the oil cooler system, torque converter, and lubrication system.

The distributed hydraulic pressure is now regulated by the solenoid valve body that opens and closes the flow of hydraulic pressure based on the ECU of the automatic car you are using.

For the hydraulic pressure that joins the cooler system, it will keep the transmission oil at an optimal temperature.

Meanwhile, the hydraulic pressure that joins the torque converter will manage the rotation of the input shaft during gear shifting operations.

Essentially, the flow of transmission oil that enters the lubrication system can provide lubrication to the clutch pads and gear ratios. If the valve body does not work actively, then your automatic car's transmission cannot operate properly.

Bad Things That Happen Due to Neglected Valve Body

There are bad things that can happen if your automatic car's valve body is not well maintained. For those of you who own an automatic car, it's not just about maintaining it by changing the lubricant, but also pay attention to the valve body.

If your valve body is not in good condition, your journey will be disrupted, making driving uncomfortable.

1. Difficulty Shifting Gears

A dirty valve body will cause the transmission gears to not work well, making it difficult to shift to both lower and higher gears. Of course, this is very dangerous if not addressed immediately.

2. Feeling Vibrations While Driving

When driving at low speeds, you will feel unclear vibrations in the car. This can actually be caused by a lack of maintenance of the valve body.

3. Producing Strange Noises

The next bad thing is that your car will emit strange noises like loud snoring sounds. This noise comes from a dirty valve body, so you need to regularly clean it.

In essence, do not let your valve body get dirty to the point of accumulating and clogging into deposits.

It would be better to understand how the valve body gearbox of an automatic car works so that you care more about that valve body.

For you Daihatsu car users who have already experienced the bad things above, please fix it immediately at the nearest Daihatsu service.