Note: Under certain operating conditions, exhaust gases are fed into the intake air via the exhaust gas recirculation valve. Due to this mixture, a decrease in the temperature in the combustion chamber is achieved and, thereby, the quality of the exhaust gases is improved.
Note: The EGR valve is controlled by the engine control unit.
Note: The position of the EGR valve is signaled to the engine control unit by the EGR potentiometer. The valve and potentiometer are installed as one piece.
Note: A blocked EGR valve is indicated by erratic engine idling.
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