What are the symptoms of a malfunctioning exhaust gas recirculation system?

[VonAdaline]

The symptoms of a malfunctioning exhaust gas recirculation system include: 1. Engine stalling at idle, which is caused by a faulty control system where the EGR valve is open or severely leaking in the closed position; 2. Poor performance at full throttle, resulting from a failure of the vacuum control unit; 3. Rough idling of the vehicle or stalling when returning to idle after driving at a steady speed. The EGR (Exhaust Gas Recirculation) system reintroduces exhaust gases from the engine into the intake system, where they mix with fresh air and enter the cylinders to participate in the combustion process again. The primary purpose of exhaust gas recirculation is to reduce tailpipe emissions from the engine and minimize the formation of nitrogen oxides in the engine exhaust.