As part of maintenance, it is not necessary to set and adjust the idle speed, ignition timing and CO content, since the values of these parameters are regulated by the electronic unit of the engine management system in accordance with previously specified requirements.
If the actual values of the parameters differ from the required ones, therefore, the sensors or actuators of the system are out of order, which must be replaced. Checking the engine management system is possible only with the use of special diagnostic equipment. Idle speed reprogramming of the engine management system can be done using the VAG scan tool.
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