EGR VALVE CONSTRUCTION/OPERATION [L8, LF]

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• Installed at rear side of the engine.
• Consists of a stepping motor, rod, plug and a valve.

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• Operates based on the signal from the PCM to drive the EGR valve stepping motor.
• The PCM determines the optimum EGR valve opening angle based on the engine speed and intake air amount when the engine is completely warmed up and drives the EGR valve.