How to adapt the throttle valve? Complete instructions

In order for the car to work properly and not appear at the service station for as long as possible, except for maintenance cases, you must treat it carefully. One of the important components of the iron horse is the throttle valve. This mechanism plays an important role in the operation of a diesel or gasoline engine. And it doesn’t matter whether the power plant is carburetor or injection. The remote control can be either mechanically or electronically driven. In the latter case, sometimes it becomes necessary to adapt the throttle valve. How to do it? Let's try to figure it out, and at the same time take a closer look at the types of this node. We will also find out whether this needs to be done, and what could happen otherwise.

Purpose of the throttle valve

Not a single car in the world can do without such a unit as a throttle valve. The mechanism is a transverse channel regulator that changes the amount of flowing liquid or gas. That is, at its core, the damper is an air valve. When it is closed, the pressure in the intake system is equal to vacuum, and when it is open, it is compared to external atmospheric pressure.

By pressing the accelerator pedal, the degree of opening of the damper is adjusted. Accordingly, how much air enters the engine cylinders depends on this. Almost every modern car is equipped with an injection engine, where all important responsibilities are assumed by the electronic control unit (ECU).

As some car enthusiasts know, the optimal ratio of gasoline to air is 1:14.7. By detecting the throttle position and the amount of air using sensors, the ECU regulates the operation of the injectors and fuel pump. This knowledge will be useful in deciding how to adapt the throttle valve.

In other words, the computer commands how much fuel needs to be supplied to the engine in order to maintain optimal proportions.

Why does a Nissan engine consume oil?

The family includes engines ranging from 1.3 to 1.8 liters. And in fairness, we note that all of them are “lovers” of eating butter. I wonder if we will find signs of oil in our unit?

The fact is that restyled engines released in 2003 showed a special “oil appetite”. At the height of the problem, cunning engineers and servicemen released information that oil consumption of up to 500 grams per 1000 km is not a warranty case. If the engine began to consume more, it was replaced under warranty. True, even on the new engine, the problem of oil consumption began to appear already after a mileage of 15,000 km.

Decoking, replacing the membrane (breather) of the crankcase ventilation system, replacing or cutting out the catalyst do not in any way affect the oil consumption of QG series engines.

In general, the QG18DE motor is not anything special structurally, and therefore it is difficult to expect much trouble from it. However, some features of this engine entail large investments in repairs.

Mechanical throttle

Currently, a mechanically driven damper can only be found in budget car configurations. In such a mechanism, the damper is connected to the accelerator pedal via a metal cable, fixed to the shaft and placed in a housing on which sensors are also located:

idle speed controller (IAC);
throttle position (TPP).

All this looks like a separate block. Various pipes also lead to it; coolant is supplied and discharged through one, and through others the crankcase is ventilated and fuel vapors are captured.

Thanks to the IAC, the required number of crankshaft revolutions is maintained when the damper is closed. The regulator itself consists of a stepper motor and a special valve. Together they regulate the amount of air, regardless of what position the throttle valve is in. Usually there are no problems regarding how to adapt the throttle valve in the case of a mechanical drive.

What is an ECU reset with VAZ initialization?

Already a large number of people leave questions “How to reset the ECU with initialization.”
In this place I will point you in the right direction. A reset is sometimes required for various reasons, the sensor was replaced with a working one, the car began to behave inappropriately, the check light is on (does not always help), the controller was reflashed, so sometimes it is necessary to reset the adaptation of the unit.
We will need a k-line adapter, elm327 adapter, OpenDiagFree

(You can download from their official website)

Next, we connect to the diagnostic socket and go into the program. Turn on the ignition.

Click on the configuration definition, then click the “Play” button next to the inscription “Proceed to block diagnostics”. Sometimes after flashing the program cannot determine the ECU itself, it must be selected manually in the “Block Selection” section.

After all this was done, we went into diagnostics and connected. Go to the "Errors"

Electromagnetic throttle valve

The electronic analog, unlike a mechanical unit, allows you to achieve the optimal torque value in any engine operating mode. The level of fuel consumption is reduced, and driving such a car is comfortable and safe. The main distinctive features (and in this case, advantages) are the following:

idle speed is controlled by moving the throttle valve;
there is no mechanical connection between the pedal and the damper.

Due to the fact that there is no mechanical connection, torque can be controlled electronically instead of the gas pedal. The damper module itself consists of the following elements:

housings;
the damper itself;
electric drive;
return spring mechanism;
damper position sensors.

Installing not one, but two damper position sensors in the module will improve reliability. For this purpose, magnetoresistive devices or potentiometers with sliding contacts can be used. It is precisely because of the breakdown of these elements that it is necessary to decide how to adapt the throttle valve on many cars.

If a malfunction occurs in the electric drive, the damper is brought to the emergency position due to the return spring mechanism. In this case, the module itself must be replaced, which can only be done as an assembly.

conclusions

The main cause of failures are spark plugs, but they are not the only ones that influence the appearance of this effect. Some car enthusiasts may not be able to cope with the occurrence of such malfunctions on their own, and it is necessary to go to a car service center, where they will carry out high-quality diagnostics and also fix the problem. But it is worth considering that you will have to be generous, since neither computer diagnostics nor repairs will cost a penny.

The brakes, of course, were invented by cowards - any reckless driver will tell you that. But when you realize that there is “something wrong” with them, it becomes scary to get behind the wheel: the trip may be your last. We drive thoughts like “it will do” away: the jokes are over

It is important to determine the type of malfunction - at least in advance

Throttle valve clogged and cleaning intervals

From time to time, the throttle valve inevitably becomes clogged, which manifests itself in various ways. In this regard, a reasonable question arises: how often should it be cleaned? It is not entirely possible to answer this unequivocally, since there are no recommendations on this matter. Some car owners visit auto repair shops when they suspect an engine problem.

Some people believe that the damper needs to be cleaned after every 40,000-50,000 km. Others have a different opinion and clean the damper more often, after 30,000-40,000 km.

Typically, black carbon deposits on the valve indicate low quality fuel. When operating a vehicle with such gasoline, there is a risk of oily deposits forming. After this, there should be no question whether the throttle needs to be adapted.

As a rule, if the piston group is experiencing some problems, then a characteristic sign is the valve becoming coked with soot and oily impurities. Sometimes this indicates crankcase ventilation is clogged.

Electronic gas pedal VAZ 2114: advantages of use and principle of operation

Since 2011, all cars produced by the AvtoVAZ concern are equipped with an electronic gas pedal, including VAZ 2114 models produced after 2011. The e-pedal has many advantages, but also due to the novelty of the mechanism used for AvtoVAZ, there were a number of shortcomings. Many motorists who bought a car with e-gas VAZ 2114 encountered problems after some time.

Electronic gas pedal

Signs of a clogged damper

When the throttle valve becomes clogged, the engine begins to operate in an unstable mode. Typical signs of a malfunction in this case are:

increased idle speed;
delayed engine response to pressing the accelerator pedal;
while the car is moving, jerks are observed, and sometimes the vehicle changes speed independently, without the driver’s participation;
abruptly releasing the gas pedal causes the power plant to stop.

In some cases, the CHECK indicator on the instrument panel will light up. Sometimes tar deposits settle on the throttle shaft, causing it to seize. Then the gas pedal is pressed with noticeable force.

Before moving on to solving the problem of how to adapt the throttle valve on a Skoda or any other car, you need to make sure that the diagnosis is accurate by conducting a visual inspection of the mechanism. To do this, you need to remove everything that is possible in order to open access to the module. Be careful not to accidentally disconnect the cooling system pipes.

Cleaning the remote control

If the cause of unstable engine operation is a dirty damper, you should move on to cleaning it. To do this, you can contact a reliable service station. Among the large number of workshops, you can find one that specializes in specific brands (Audi, Volkswagen, Toyota, Mercedes and others). However, the owner can do all the work himself, since much experience and skills are not required in this matter.

At service stations, the cost of the procedure may depend on a number of factors:

complexity of the work - for some cars, access to the remote control will require the dismantling of many parts;
service station service level - as a rule, the larger the organization, the more expensive it is;
location – in large cities you can leave more money than in the periphery.

Cleaning the throttle valve is a simple procedure, after which you usually need to think about how to adapt the throttle valve on a Nissan or any other car.

Any car owner can perform this procedure independently. No special knowledge or skills are required here. All you need to get to the damper are tools and rags (preferably soft ones). You also cannot do without a special product - mainly the carburetor cleaner “Carb Cleaner” is used.

Owner reviews

Owners of LADA XRAY who independently performed the throttle valve zero adaptation procedure note that the car stopped twitching and acceleration became smooth.

Some reviews from Drive2.ru (link to post):

Let us remind you that we previously published an information letter from AvtoVAZ, which tells us what to do in case of vibrations and jerks when starting a LADA car.

Key words: ECM Lada XRAY | ECM Lada Vesta

Found an error? Select it and press Ctrl+Enter..

Self-cleansing procedure

If the damper is electronically actuated, then it is better to remove the negative terminal of the battery. Next, you can do everything according to simple instructions:

dismantle the air filter by unscrewing the pipe clamp;
disconnect all connectors of the throttle module and other pipes;
move the air filter receiver to the side so that it does not interfere, and begin cleaning the damper;
upon completion, reassemble the damper module in reverse order, checking that everything is in place;
After assembly, start the engine and check the idle speed.

In some cases, before you begin to adapt the throttle valve on a Toyota, Nissan or Skoda, it is necessary to remove the throttle itself, which allows you to completely clean the valve. To do this, you will need a 5 mm hexagon to unscrew the 4 fasteners. Removing the throttle should be done with great care, as there is a risk of damaging the gasket.

If, after cleaning the throttle body, increased idle speed is observed, it means that the damper needs to be adapted. What this is is further in the topic of the article.

Adjusting opening angles in Mitsubishi Lancer

My secret How to adapt the throttle Complete instructions

The air valve should be open and the throttles should turn freely. Permissible gaps range from 0.06 mm. replacing front brake pads on a Mitsubishi Lancer 9 - The adjustment is carried out at low idle speed. The Lancer engine will gradually warm up to 90 degrees and only then will it be possible to tighten the screw, which will change the composition of the combustible mixture (two and a half turns are enough to enrich it). After starting the engine, you should make sure that there is minimal throttle opening, but the engine itself is running well. Then, using the adjusting screw, we achieve the highest speed (the throttle must be open). In this way, we ensure that even after sharply opening the throttle, the engine will still run and quickly gain speed.

After properly carried out repairs or preventive maintenance, you will only need to make sure every 15-20 thousand kilometers to ensure that excess dirt does not accumulate and that the Mitcubishi Lancer 9 throttle valve is working properly. This will help you save money and not spend money on new spare parts for a long time.

Do you still think that diagnosing a car is difficult?

If you are reading these lines, it means you are interested in doing something in the car yourself and really saving money, because you already know that:

Service stations charge a lot of money for simple computer diagnostics
To find out the error you need to go to specialists
The services use simple impact wrenches, but you can’t find a good specialist

And of course you are tired of throwing money down the drain, and driving around the service station all the time is out of the question, then you need a simple CAR SCANNER ELM327, which connects to any car and through a regular smartphone you will always find the problem, turn off CHECK and save a lot of money.

This is interesting: Flushing a car radiator - note to the owner!

The need to adapt remote sensing

This definition refers to the operation (or training) that is carried out so that the ECU “knows” what position the throttle valve is in relative to the degree of depression of the accelerator pedal. This procedure is simply necessary if the engine is unstable at idle.

For most Toyota, Lexus, Mercedes, Nissan, and Audi cars, it is necessary to adapt the throttle valve, as this allows you to eliminate the malfunction. The procedure is performed in the following cases:

in the event of a critical drop in the voltage of the on-board network (the battery is switched off or completely discharged);
the ECU was replaced;
the valve was cleaned and the throttle was removed;
when replacing the throttle module itself;
the accelerator pedal was replaced, usually with an electronic one.

It is worth noting that due to the layer of dirt, the gap between the damper and the body changes, and after cleaning the damper, its position has changed. But the ECU “has no idea” about this and continues to control the fuel supply according to previous indications (before the cleaning operation). Adaptation will completely eliminate this gap and restore engine performance.

The simplest way to carry out adaptation

Now the question of whether it is necessary to adapt the throttle valve after cleaning should definitely not arise if there were still doubts. The easiest way to carry out the operation is to simply reset the battery terminal. Just to begin with, it is worth warming up the engine well to operating temperature, for which you should take a short trip. Then, turning off the engine, disconnect the negative terminal of the battery and wait. Depending on the brand of car, the waiting time can be 10-30 seconds or 15-20 minutes.

During this period, all ECU parameters should return to the original (factory) settings. Next, all that remains is to connect the terminal and start the engine - the speed should return to normal.

– dancing with a tambourine, battery and ignition

Warm up the engine to operating temperature. Usually 80-90 degrees is enough and we turn off the engine.

Disconnect the battery, remove the terminal from it

. This is necessary to reset the parameters in the control unit. In a simple way - reset the ECU to factory settings. This will allow the unit to retransmit the damper values in the closed position.

To calibrate the throttle you need to remove the battery terminal

We wait five minutes

. This is enough for the control unit to be completely de-energized. We connect the terminal to the battery. Don't forget to tighten it to make better contact.

Turn on the ignition and wait 30-40 seconds

without touching or pressing anything. At this time, you may hear a buzzing noise under the hood. This adapts the throttle, the motor moves the damper, determining its position and recording this data in the ECU. This is typical only for electrical and electromechanical remote sensing devices.

Turn off the ignition and wait 15 seconds

. After this time, we turn on the ignition, wait until all the indicators on the dashboard go out and start the car. We check the engine at idle speed, the speed should be normal.

In most cases, this method of adapting the throttle valve gives positive results.

It may not work on cars: Audi with a 1.8 liter ADR engine, Opel Corsa, Octavia Tour 1.6 akl engine, 4th generation Golf, Audi A4 ADL B5 body. All cars have non-volatile memory, which cannot be reset by removing the terminal from the battery.

Adaptation using the example of some cars

Another method, which we will consider using the example of one well-known German brand, also involves adaptation without a computer. Here you should warm up the engine to a temperature of approximately 70-99°C. The battery voltage must be at least 12.9 Volts when the engine is not running. The action plan for how to adapt the throttle valve on a Volkswagen will be something like this:

After warming up and turning off the engine, you should wait a short period (5-10 seconds).
With the gas pedal released, turn on the ignition and wait 3 seconds.
After 3 seconds, you need to press the accelerator pedal all the way 5 times and release it back. Act quickly, as you only have 5 seconds to do this.
After the 5th exercise, you should wait a pause.
After 7 seconds, press the pedal all the way again and hold it in this position until the “CHEK” indicator starts flashing (≈ 10 sec.), then it should remain on continuously (≈ 20 sec.).
When the indicator lights up constantly, count to three and only then release the pedal.
Start the engine (repeat if necessary), wait 20 seconds, then lightly accelerate (2000-3500). If the tachometer shows 700 rpm at XX (+- 50), it means that the adaptation was successful.

In this case, it is necessary to strictly adhere to the time intervals of each setting step. This is the only way the ECU training will go smoothly. But before that, it’s worth studying the adaptation features and the possibility of a manual procedure for your car. Perhaps only service station specialists can help.

Via phone

Instructions:

For an Android smartphone, download and install the ECU Tweaker application. We copy the ecu.zip archive to the root of the internal or external memory without unpacking it.
Connect the ELM327 V1.5 adapter to the OBDII port of the car.
Turn on the ignition.
Launch the “ECU Tweaker” application on your smartphone
In the search, select “BM LADA”
Then "Automatic Transmission"
Then "BVR_On_CAN_x52_JS3_v2.4"
Then "After sales"
Then "Diagnostic"
Then the "Wrench" button
Go back and select “Learnings information”
Go back and select “Learnings Procedures”
Complete the training (see “Training Procedure” above)