Throttle valve device for VAZ 2114 8 valves injector

The VAZ 2114 throttle valve is an important engine component that provides a dosed supply of purified air to the engine, thereby ensuring the saturation of the fuel with oxygen to ensure its active combustion.

Finding this element is not difficult. To do this, you will need to open the hood of your car, find the air filter and the black pipe for supplying air to the engine. Run your gaze in the direction of air movement (from the filter) closer to the windshield, determine the location of its connection with the metal element with the tubes connected to it. This will be the throttle assembly.

Throttle valve: what is it and where is it located in the VAZ 2114?

In a gasoline engine, the throttle valve (hereinafter referred to as the throttle valve) is an integral part of the fuel system and is an air valve. Its main task is to dose the air supply entering the cylinders to obtain a combustible mixture.

The throttle valve 2114 is connected to the throttle cable and is located upstream of the intake manifold, immediately after the air filter. Whenever the driver increases pressure on the accelerator pedal, the damper opens, and when it decreases, it closes. At the moment of opening, excess pressure disappears in the intake system, and when closing, negative pressure is formed again.

LET'S SUM UP

Here everyone decides for himself, we will not enter into disputes, there are simply different opinions, and we are obliged to warn about the pitfalls and the other side of the coin.

When should you clean your throttle body?

As a preventive measure, it is recommended to periodically clean the remote control (every 65-70 thousand km of vehicle mileage). However, some signs may tell the driver that the damper is dirty and requires cleaning now.

Among these signs are:

• problems with starting the engine (especially in the cold). At the same time, the smell of gasoline may come from the exhaust pipe of the car;
• noticeable reduction in engine power;
• increased fuel consumption;
• instability of idle speed;
• jerks when driving a car at low speed, etc.

The main reasons that lead to throttle valve contamination are:

1. Insufficient filtration of incoming air by the air filter - the smallest particles of dirt and dust penetrating through the filter settle on the elements of the emergency protection, affecting their mobility. In this case, the flow area of ​​the chamber for passing the air mixture decreases.
2. Oiling.
3. Crankcase gases.

The last two factors cause the formation of an oily coating on the elements of the throttle body and, as a result, form a poor response to the accelerator pedal (due to the deterioration of the throttle assembly). Regardless of the reasons that led to the blockage of the remote control, it is not difficult to restore normal operation of the car engine. To do this, you need to remove this unit and clean it.

Design

The throttle assembly is made of aluminum, and there are many mechanisms inside it, such as a damper actuator and a damper position sensor control drive. The TPS is installed on the same axis with the throttle valve. A little lower than the TPS there is an idle speed controller; this is a worm-type DC motor on the shaft of which there is a valve that blocks or opens the air flow necessary for the engine to idle. For IAC, the remote control has a special channel through which air flows when operating at IAC.

Throttle assembly (DU): how to remove it correctly?

To ensure that the process does not cause difficulties, it is important to know where exactly the VAZ 2114 throttle assembly is located.

If you don’t know what the remote control looks like, then look for the air filter housing in the engine compartment. The throttle assembly will be located under it.

To clean the device, remove it by sequentially performing the following steps:

1. The battery terminals are removed.
2. The expansion tank cap is opened (to release excess pressure).
3. Remove the plastic cover that covers the upper part of the engine (if present).
4. The forced ventilation hose is disconnected. It should be inspected and any remaining oil (if any) removed.
5. The connectors from the throttle sensors are disconnected.
6. The outlet pipe is removed.
7. The cooling pipe is removed.

This procedure must be performed carefully. You should prepare the plugs in advance that will be needed to prevent coolant from leaking. M13 bolts can be used as plugs.

Now you can start cleaning the device.

VAZ 2110 checking DPD with a multimeter

Owners of VAZ-2110 cars often have to repair their vehicle. And the consequence of repair work can be both significant breakdowns and minor malfunctions. What type of failure is a malfunction of the throttle position sensor? What is this part responsible for in a car? How can we determine that this particular part is no longer functioning correctly? Read about it in our article.

How to properly clean and flush the throttle valve?

Before you clean the throttle valve on a VAZ 2114, you need to purchase a suitable product for this. WD40 is most often used, but MEDIC, FluxOff, CTEPUP, etc. are also suitable (any liquid for flushing carburetors will do).

It is important that the DZ cleaning product is aerosol and includes a special thin tube that allows you to reach the most remote channels.

Cleaning the unit can be either superficial (without removing the unit) or complete.

Each method has its own characteristics, namely:

Surface method - to perform this you will need a cleaning agent, a rag and a soft brush. All accessible elements of the remote control are coated with the product and left in this form for 10-15 minutes. After this, use a brush to remove all dirt and carefully wipe all parts with a soft cloth. Further operation of the car is possible after the DZ has completely dried.

It should be noted that the effectiveness of this method is low, since it is impossible to obtain full access to all elements without removing the assembly.

Complete cleaning - involves removing the unit, cleaning, as well as replacing the seal and O-ring.

After removing the damper, its surface is sprayed several times (depending on the degree of contamination of the part from 3 to 5) with a cleaning agent. The whole process will take about 30-40 minutes. Particular care should be taken to apply the product to all calibrated channels, since it is in them that carbon deposits accumulate the most. All dirt is removed with a soft brush, and then the parts are wiped dry with a rag.

After complete cleaning, the assembly is assembled in the reverse order to that given above (to remove the remote control).

Please note that with any method of cleaning the throttle body, you should not use metal brushes, as they can significantly damage the surfaces.

Correction of a factory miscalculation

It is quite common for a throttle assembly to come out of the factory with something that cannot even be called a defect, but can still be attributed to design errors. In theory, air should flow into the space behind the throttle, for which a channel of approximately 2.5 mm is specially made.

But the whole problem is that this channel was pressed against the wall of the receiver, thus blocking the possibility of air flow. A slight modification of the throttle assembly can help in this case.

This material will help you install engine crankcase protection yourself: https://vazweb.ru/desyatka/dvigatel/zaschita-dvigatelya.html

Bored channel for air flow in the throttle

To do this, just take a file and use it to make a small groove in the indicated place. 2 - 3 mm will be enough. But before doing this, it is necessary to remove the throttle.

Features of cleaning electronic remote control

For cars that have an electronic gas pedal (E-gas), the process of removing the throttle valve is much simpler than in conventional models. After all, during the dismantling process there will be no need to disconnect sensors, heating hoses and throttle cables.

Complete cleaning of the electronic throttle is done as follows:

1. The VAZ 2114 throttle is removed. To do this, the air filter and corrugation are dismantled, and then the remote control pipes are disconnected. Then the “trick” from the throttle itself is disconnected.
2. To unscrew all the bolts you will need a long hex wrench No. 5 (short ones cannot reach the lower far bolt).
3. Cleaning. The device has a simple design and can be cleaned using an aerosol carburetor cleaner. Wipe the part dry with a soft cloth.

It is important not to try to forcefully move the flap with your finger or put pressure on it.

TUNING WITH REPLACEMENT

The standard valve (throttle assembly) usually has a diameter of 46 millimeters; many fans of various tunings decide to replace this part with an alternative one:

• VAZ 2112 throttle valve 52 has a larger diameter (there are also valves of 54 and 56 millimeters)
• Is there any benefit from such tuning?
• In various online stores they often offer to replace the standard 46 mm throttle body (DU) and install 52, 54 or 56 mm
• The product description says that an enlarged throttle body (also known as the throttle body) leads to a decrease in air flow speed, which improves the performance of the air intake system
• The effect of installing an alternative damper will be clearly visible when using a zero-resistance filter in the system
• We recommend installing a unit with a diameter of 52mm, because... the diameter of its air inlet for a standard receiver is 53mm

The valve is standard (standard) on the left and new (increased flow diameter) on the right

• In order to install a remote control of a different diameter, as a rule, nothing needs to be modified
• The maximum necessary action is a small trimming of the gasket (this is most often necessary when installing a 56mm throttle assembly)

The following positive effects are noticed after such an installation:

• The car becomes more agile
• Problems with idle speed disappear
• The gas pedal also becomes more responsive.

Installation disadvantages:

• Fuel consumption increases, although many believe that the BC gives incorrect readings and consumption does not change
• Some owners see the effect exclusively on 16-valve engines

The picture we described above may appear completely different:

• All the positive effect that many people notice when installing a larger diameter remote control usually appears because the old remote control already needed cleaning and naturally the motor was not working correctly
• After installing a (clean) new remote control, the engine starts working in its normal mode, this seems like a “new breath”
• In other words, all the described effects appear after regular cleaning of the remote control.
• And besides this, after replacing the remote control, with a larger diameter you will have new problems with the operation of the motor that did not exist before
• This is due to a violation of the ratio of gasoline and air, which the ECU is no longer able to correct.
• And instead of simply returning the remote control to the standard diameter, the owners are recommended to replace the firmware, the price of which is higher, but there is no point
• There is also an opinion that a remote control with a diameter of 52, 54 or 56 millimeters is a completely useless thing, and only installed in combination with other engine tunings produces a noticeable effect
• It remains unclear whether this effect is caused by remote control or other modifications to the engine
• After all, if on a turbo engine with a power of no more than 200 horsepower, standard 46mm dampers are left and their work is quite enough