Adaptation of throttle valve of Volkswagen Polo sedan

Volkswagen Polo throttle valve

The condition of the throttle assembly determines the correct mixture of air and fuel. The presence of dirt or lack of adaptation of the throttle can lead to unstable operation of the powertrain.

At the same time there will be an increase in fuel consumption and deterioration of vehicle dynamics. Prolonged troubleshooting is not recommended, because problems with the throttle assembly can lead to a reduction in the life of the power unit and related systems.

Throttle assembly of Volkswagen Polo

Cost and part number of the throttle assembly on the Volkswagen Polo

The original Volkswagen Polo throttle assembly has the VAG part number 03C133062M. The cost for a branded product starts from 20 thousand rubles. The resource of the unit largely depends on the operating conditions and the timeliness of cleaning and adaptation. On average the valve serves 90-120 thousand km.

It is also possible to buy the original throttle unit at autorickshaws. Its cost ranges from 5 to 8 thousand rubles. It is quite difficult to determine the remaining life with a visual inspection. Therefore, the purchase of a used unit is always accompanied by the risk of buying a choke, which will require replacement after a short period of time.

Good analogues of the original throttle valve from third-party manufacturers are listed in the table below.

Company manufacturer Part Number Cost, rub
ASPARTS AS6140 5900-6000
DOMINANT AW03C01330062M 6800-7000
RUEI RU13M62 5300-5500

Tools and materials required to clean the throttle assembly

In order to perform the cleaning of the throttle valve of the Volkswagen Polo, you need the tools and materials listed in the table below.

Name Notice
Cleaner The most suitable carburetor cleaner in an aerosol package, such as “Carbikliner”
Rag Soft, but not fluffy.
Toothpick and scraps of cloth for cleaning in hard-to-reach places Cotton swabs are the best.
Screwdriver With flat, cross-edged blade
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Procedure for cleaning and replacing the throttle valve on the Volkswagen Polo

In order to replace or clean the choke on a Volkswagen Polo sedan, you need to follow the instructions below.

  • De-energize the onboard network of the car. To do this, it is necessary to disconnect the minus terminal from the battery.

Removed terminal from the battery

  • Disconnect the crankcase gas vent hose.
  • Unscrew the five bolts fixing the air filter body.

Volkswagen Polo air filter

  • Disassemble the air filter and remove it.

The process of removing the air filter

  • Disconnect the air intake pipe.

Air intake pipe

  • Evaluate the condition of the throttle assembly.

Throttle unit

  • Wipe everything with a rag. Otherwise foreign particles may get into the working chamber.

Preparation for throttle assembly disassembly

  • Press the catch and disconnect the terminal block.

Dismantling process of electrical connector

  • Remove the screws fixing the throttle unit.

Throttle assembly mounting locations

  • Dismantle the throttle valve.

Throttle unit removed

  • If the choke is replaced with a new one, it must be assembled in the reverse order. If you intend to clean the old choke, it is recommended to follow the instructions below.
  • Treat the choke with a special cleaning agent.

Cleaning agent

  • Use a rag and cotton swabs to clean the surfaces. Do not use excessive force. If the dirt cannot be removed, the throttle assembly must be reworked with a special cleaner.

Cleaned choke

  • After cleaning is complete, install the assembly in reverse order of removal.

Throttle Assembly Adaptation

The throttle body requires an adaptation procedure in several cases:

  • idle speed fluctuates;
  • Difficulties in starting the engine;
  • in the process of warming up the power unit the car repeatedly stalls
  • the dynamics is deteriorated;
  • jerking during acceleration.

The most convenient way to adapt the throttle of Volkswagen Polo is with the use of the utility VCDS. In order to perform this activity it is necessary to:

  • Connect the adapter to the diagnostic connector of the Volkswagen Polo.
  • Turn on ignition.
  • Start the VCDS application.

Starting the VCDS application

  • Activate the “Engine” block.
  • Go to the basic settings.

Goes to the powertrain basic settings menu

  • Depending on the design of the throttle unit, select:
  • 060 – in case of electric throttle actuator;
  • 98 – if there is an actuator by means of a cable.
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Throttle valve electric actuator selection example

  • Press the “Adaptation” button. After that it is necessary to wait for a short time. After ADP OK appears on the screen, press “Finish”.

Throttle control adaptation process

Do not start the engine or press the accelerator pedal during the adaptation process. These actions can result in improper throttle adaptation. In this case you will need to repeat the above procedure.

Self-cleaning and adaptation of the throttle valve of the car Volkswagen Polo sedan

Attentively watching the tachometer arrow, which slowly but surely creeps to the zero mark, and thinking desperately, “I wish I had not stalled!” A few minutes ago I was crawling in first gear: something unimaginable was going on with revs – they were jumping like squirrels in a wheel. And now the power at idle pulls down, and many kilometers of evening traffic jam in both directions is not going to end.

Unsteady operation of the “engine” and its dips can be connected with wear of the throttle. More precisely – with the reduction of the resistive coating of the potentiometer. The gap between the body of the device and the throttle changes, as a result of which a different amount of air, necessary for creation of fuel-air mixture, enters the engine.

All motorists face the problem sooner or later. Owners of domestic cars have one way out of the situation – throttle valve cleaning. In critical cases, if the wear of the device is too severe, it is not cheap replacement or repair.

Owners of foreign cars (for example, Volkswagen Polo sedan) are much easier to solve the current difficulty. Flushing the system is a huge plus for the proper operation of the throttle, but to increase its efficiency, experts recommend making tweaks or adapting the ECU. “The brains” of the car need to understand what position the throttle is in in order to control the engine productively. The ECU is aided in this by adaptation.

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It sounds somewhat futuristic: as if an artificial mind has settled in cars, but in fact, everything is ingeniously simple: the information is transmitted through special sensors that fix the position of the throttle.

The operation on the Polo sedan is done using the factory port, which is installed on all models of the German concern. You can use any software to choose from: VCDS or Vasya Diagnost – the most popular utilities for programming the electronic control unit.

To clean the throttle or not – everyone decides for himself based on the amount of free time. But for personal good every self-respecting motorist is recommended at least once in two years to get under a hood and disassemble the device for flushing. Otherwise, in traffic jams the car will start bouncing like a pumping “hydraulics”.

The process of cleaning the throttle assembly

The work will require an aerosol carburetor cleaner. Many experienced polovedy recommend using the brand ABRO Carb & Choke Cleaner. He inexpensive – in the region of 250-300 rubles. The balloon is very good at dealing with dirt deposits and lasts for a long time. Since the spray is quite poisonous and can provoke a chemical burn, you should wear rubber gloves during the procedure. It is also necessary to stock up on dry, clean rags and cotton swabs. Of the tools you will need a Phillips screwdriver and a Torx angle screwdriver.

The sequence of steps to clean the throttle valve:

In terms of time, cleaning will take no more than an hour. After reassembly, you can check the operation of the car: for many owners of the Polo sedan, the root of all troubles lies precisely in the excessive neglect of the mechanism. It is possible that the adaptation may not be necessary.

Procedure of adaptation of throttle valve

If the thorough flushing of the node did not help, and the engine still loses revolutions at idle, it means that the car does not have enough power to open the flap. In some cases, after cleaning, the car with great difficulty starts up, and on a warm engine there are floating cycles at low revolutions. All these troubles are solved by adapting the ECU and adjusting the performance of the electric motor and other system parameters.

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It is also necessary to carry out adaptation of the German car in those cases when the electronic unit or accelerator pedal was replaced on board, as well as when the battery is completely discharged.

The procedure of throttle adaptation via VCDS:

  1. Connect the adapter to the vehicle’s diagnostic connector.
  2. Turn on the ignition and start the utility.

Under no circumstances press the accelerator pedal and the engine must be switched off during the operation. Otherwise, all the settings will be lost.

Upon completion of the procedure, you can disconnect the program, wait about 30 seconds and re-enter the utility to check the errors and monitor the damper opening angle. The values are checked in channel 3 in the Engine block. The standard flap angle for the Polo sedan is about 4 degrees.

Thus, if the Polo sedan has a whistling when overpowering, sagging at idle speeds, and the engine suffers from lack of power when driving “crawling”, then the throttle flap should be considered as the main culprit of troubles in the first place. To eliminate such difficulties, the knot is thoroughly flushed and subjected to an adaptation procedure.

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