As is known, fuel-injected cars use many sensors that are necessary to monitor and control the operation of the engine. To operate an internal combustion engine, you need not only fuel, but also air, and the accelerator pedal actually regulates engine speed by supplying air to the cylinders. The more air entering the cylinders, the more fuel is needed for the correct fuel mixture ratio.
In injection cars, which is the VAZ 2114, a special unit called a throttle valve is used to regulate the air.
This article talks about the VAZ 2114 throttle valve, namely its purpose, design, signs of malfunction, cleaning and removal.
Purpose
The VAZ 2114 throttle valve is designed to regulate the air flow supplied to the cylinders. On the 14th Lada model, two types of throttle valves were used: mechanical and electronic.
The damper is mounted on an axis, which is movable and opens when you press the gas pedal, thereby opening the air supply line. The throttle valve also contains additional sensors necessary for engine operation, such as: TPS and IAC.
These sensors regulate idle speed and are responsible for the stability of engine speed.
HOW CAN YOU CLEAN THIS UNIT?
In order to clean the VAZ 2114 throttle valve, it must be removed. This is not at all difficult to do, you need to prepare a set of screwdrivers, a socket wrench set to “13”, a carburetor cleaner, and you can get to work.
REMOVING THE THROTTLE VALVE
- Remove the decorative plastic cover of the motor;
- Next, the forced ventilation hose is removed. The presence of traces of oil in it serves as indirect confirmation of the need for cleaning;
- Open the cap on the expansion tank and release the clamps on the hoses that provide heating for this unit;
- Remove these hoses and close them with plugs to prevent coolant from escaping;
- The fuel tank ventilation hose and the damper drive cable are disconnected;
- Remove the two screws that secure the damper and remove it.
Now it becomes possible to clean and flush this unit. We hope that why you need to clean the throttle valve is already clear, let’s talk about what to clean and how to clean it.
ABOUT CLEANING PRODUCTS
To perform this operation, you must first purchase a throttle valve cleaner from retail chains. Today, the choice of such products on store shelves is quite wide. You may be offered a choice of tools such as MEDIC, BD 40, CTEPUP, FluxOff and others.
DZ cleaning agent
There is no point in recommending anything specific. As many chemical products are available for sale, there are as many positive reviews about them. In this case, it is worth listening to the opinions of those drivers who have already carried out similar work on their car; you can look for reviews on the Internet and other sources about this or that brand of cleaning product. The cleaning product should be packaged in an aerosol can with a tube to allow access to remote channels.
HOW TO CLEAN THE THROTTLE VALVE
This unit is not a very complex structure, so cleaning the throttle valve is possible in the garage and can be done by any driver. Cleaning methods are used when it can be superficial and complete. Let's look at them in order.
- The surface method is not very effective and is carried out approximately once every 2-3 thousand kilometers. To perform it, you need to have any chemical agent, a rag and a soft brush. Apply the product to the accessible surface of the damper. Let it sit for about 15 minutes, and then wipe everything thoroughly with a brush and rag. When everything is dry, you can continue further operation of the machine;
- For complete cleaning it is necessary to have a new throttle valve gasket and O-ring. When carrying out such operations, it is advisable to replace them. Their cost is low, and the responsibility for the quality of the supplied air is enormous. It should be noted that they have design differences, so you need to know which spare part to purchase. Spray the removed flap with cleaning agent several times. The number of times can range from 3 to 5, and sometimes more. This depends on the degree of contamination and the type of chemical. This may require 30-40 minutes of your time. Particular attention is paid to all calibrated channels. Most often they are covered with soot. The throttle valve grooves are blown out with compressed air from a compressor or a tire pump with a nozzle is used. If you were able to flush the throttle valve, then do a similar procedure with the idle air regulator.
The damper sparkles in the rays of the garage lamp, which means that it can be returned to its normal place. Installation operations are carried out in the reverse order to its removal. At the end of the installation, there must be a mandatory check of the functionality of the cleaned unit.
If this unit is assembled correctly, there is no need to carry out any adjustment work. The electronic control unit and idle air regulator will do this work themselves.
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.
Removing the throttle valve
Unscrewing the damper fasteners
In order to remove the mechanism, arm yourself with screwdrivers, which will be needed when freeing the mechanism from the clamps, a 13mm socket wrench, and any cleaning agent.
- Cleaning the described unit of a VAZ car begins with removing the plastic lining covering the upper part of the power unit;
- After this, remove the hose that provides forced ventilation. Look at the condition of the air pipe, as there may be oil residues there, which indicates that the mechanism also requires cleaning;
- Next, remove the cap that covers the expansion tank to eliminate pressure in the engine cooling system, since the damper is connected to the anti-freeze hoses. To do this, you need to remove the hoses that heat the mechanism, after first removing the fastening clamps from them. The pipe system is closed with easily removable plugs;
- And finally, we remove the hose with which the fuel tank is ventilated, disconnect the cable that connects the damper to the gas pedal and remove the device itself. To do this, you need to unscrew the two fastening nuts.
Depending on the degree of contamination, either superficial or complete cleaning of the mechanism is necessary.
Types of remote control
The VAZ 2114 was equipped with two types of throttle valves: mechanical and electric. Let's look at each of the dampers in more detail, and also talk about the pros and cons of these units.
Mechanical damper
Such a damper is controlled using a gas pedal cable, that is, a cable runs from the pedal assembly in the car interior to the remote control, which opens the damper when you press the gas pedal. Such a throttle was installed on the VAZ 2114 from the very beginning of its production. The mechanical throttle contains additional sensors necessary for engine operation.
The mechanical remote control is equipped with heating, and it is through it that the engine cooling system pipes pass.
This part is quite reliable and lasts for a very long time without any damage, but, like all components, it has its pros and cons.
Pros:
- Simple design;
- Throttle heating;
- Simple mechanism;
Minuses:
- The presence of two sensors that often fail;
- Frequent contamination of the XX channel;
Electric damper
An electronic throttle unit appeared on the VAZ 2114 in 2011 and became known as the E-GAZ system; this damper made it possible to abandon the TPS and IAC sensors. All necessary processes for adjusting the air supply at idle and at speed are regulated by the damper itself.
On this throttle, heating was abandoned, since it was no longer required. This damper has become much more advanced and modern.
Pros:
- No IAC and TPS;
- Reliable design;
- The damper gets dirty less often;
Minuses:
- Many people complain about the gas pedal being laggy and responsive;
Symptoms of a problem
Information about whether the throttle valve of the 2114 model needs to be cleaned or not can be determined by the following signs:
- When you release the accelerator pedal, the transition from high-speed mode to low speed is not smooth (sometimes there is a drop to five hundred revolutions per minute).
- In the cold season, the VAZ 2114 power unit is almost impossible to start; when starting the engine in a closed room, the smell of exhaust is not felt, it is replaced by the smell of gasoline.
Cleaning the damper in a VAZ car - When starting the engine, “tripping” and vibration are often observed as a consequence of the fact that there is not enough air-fuel mixture for all cylinders; When moving slowly, the power unit twitches.
The main reason for contamination of the throttle valve on a VAZ 2114 is the air-oil mixture, as well as fine dust entering through the air filter membrane. These materials, falling on the damper material, cover it, reducing the mobility of the mechanism for changing the cross-section. Over time, the idle speed control rod can become clogged, and the thermal gap opening narrows, which leads to poor air flow through the channel.
So, let's begin. Cleaning the throttle valve is done after the engine of a VAZ car has cooled down.
Cleaning the throttle
The throttle valve must be cleaned every 50-70 thousand km of the vehicle. Because due to its design, the throttle often becomes dirty, which leads to uneven idling and other problems associated with engine speed.
To clean the throttle, it must be removed from the vehicle.
- To do this, unscrew all the pipes and hoses suitable for it;
- We remove the connectors from the sensors if it is a mechanical throttle;
- We unscrew the nuts securing the throttle to the receiver: electronic remote control – 3 nuts, mechanical – 2 nuts;
- We take out the throttle;
Attention! On an electronic throttle, it is prohibited to press on the valve, as this may damage the mechanism.
- Flushing consists of cleaning the throttle walls and flap from carbon deposits; for this it is best to use a carburetor cleaner;
- On a mechanical throttle, it is also necessary to flush the IAC channels; to do this, it must be removed;
- After washing the remote control, we install it in place, not forgetting to replace the gasket, if it is torn, between the remote control and the receiver.
ABOUT THE PREREQUISITES FOR ITS CLEANING
The following signs of a dirty throttle body should alert the driver that it is time to clean the throttle body:
- The smooth transition from high to low speeds disappears. The motor may stop spontaneously;
- It is very difficult to start the engine in the cold season. It may be accompanied by the smell of gasoline from the exhaust pipe;
- When starting the engine, vibration and “triple” are observed, since there is not enough working mixture for all cylinders;
- Inability to coast or engine braking.
To get rid of all this, you need to clean the throttle body. In some cases this happens earlier, in others later, but it is necessary to clean the throttle valve. The main culprits of pollution are small particles of dust, which still penetrate through the air filter, and the fuel mixture. When they get on the moving parts of this unit, they impede their movement, reduce the flow area of the intake tract, and clog the channel and rod of the idle speed sensor. Various sources recommend carrying out preventive work when a car runs away from 40 to 50 thousand km. When operating the car in areas with heavy dust, the car will not reach these mileage figures, the unit will clog earlier. Operation in areas where snow cover persists for a long time, this mileage may be even longer.
The quality of the fuel and engine oil used influences the timing of flushing the throttle assembly. Please also consider this issue very carefully.
Signs of a clogged element
You can independently verify that the damper needs cleaning based on several signs:
- car acceleration dynamics decreases;
- engine operation becomes unstable;
- when moving, peculiar jerks are observed;
- there is no smooth running.
If the above symptoms appear, the damper should be cleaned of dirt as quickly as possible. Cleaning, as we noted earlier, is quite simple, and besides, it will be much cheaper than purchasing a new element.
Flushing the remote control
In this article we will describe two types of DS cleaning:
- Surface.
- Full.
They differ in the degree of complexity and, accordingly, in quality.
Superficial cleaning
Its essence is that we will not completely disassemble the entire remote control, but will go over the damper with a cloth and remove surface dirt.
For work we will need:
- Any cleaning agent: carburetor cleaner, alcohol, thinner, gasoline, wd-40. They differ in the degree of “removability” of dirt.
- Rag.
- Brush.
First of all, we remove the air filter corrugation from the air filter, take our cleaning agent and spray it inside. We begin to clean the surface with a rag and brush. Also, do not forget to open the damper itself and clean it from the back. At this point the process is completed, we install the filter pipe back, and that’s it. But with this cleaning method, we will not be able to completely clean all the insides of the remote control, blow out all the holes and channels, so it is better to use a complete cleaning.
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:
- The battery terminals are removed.
- The expansion tank cap is opened (to release excess pressure).
- Remove the plastic cover that covers the upper part of the engine (if present).
- The forced ventilation hose is disconnected. It should be inspected and any remaining oil (if any) removed.
- The connectors from the throttle sensors are disconnected.
- The outlet pipe is removed.
- 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.
- The remote control drive is removed.
- The gas pedal cable is unscrewed.
- The fastening nuts are removed, and then the remote control itself.
Now you can start cleaning the device.
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.
Do-it-yourself cleaning of the throttle valve on a VAZ 2110
The throttle valve is an integral part of almost any car. The domestic masterpiece represented by the VAZ 2110 is no exception.
It is noteworthy that there is no place for a car without a throttle valve, but it is this valve that often causes a lot of trouble to the car owner.
Most often, problems with the throttle manifest themselves in the form of incorrect operation of the gas pedal, strange behavior of revolutions when accelerating or driving on the road. The first thing you need to do is check if everything is fine with the damper.
Where is the DZ located?
Engine compartment
The entire throttle body is located in the engine compartment. It is located between the intake manifold and the air filter. In other words, the air enters the filter, passes through the mass air flow sensor, enters the remote control, and from there goes to the engine through the intake manifold (receiver). To find out where the remote control is located, pay attention to the figure (number 3).
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:
- 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.
- To unscrew all the bolts you will need a long hex wrench No. 5 (short ones cannot reach the lower far bolt).
- 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.
- The throttle is installed in its original place.
