What should I do if the EGR valve of Haval H5 engine fails?

The valve may be caused by pollution or damage controlled by ECU, and the EGR valve can be replaced in 4S shop. The EGR valve only opens at medium load and closes at low load and high load. EGR valve is the valve of exhaust gas recirculation system. If the EGR valve fails, there will be phenomena such as unstable idle speed or even flameout, flashing fault lights, annual emission failure, engine oil combustion, blue smoke from tail gas and so on.

EGR valve is a mechatronics product installed on diesel engine, which is used to control the amount of exhaust gas recirculation fed back to the intake system. It is usually located on the right side of the intake manifold, near the throttle body, and connected to a short metal pipe leading to the exhaust manifold. Its function is to control the amount of exhaust gas entering the intake manifold and make a certain amount of exhaust gas flow into the intake manifold for recycling. EGR valve is a very important and key component in exhaust gas recirculation device. Haval's H5EGR valve failure will affect the normal operation of the engine, especially when the engine is idling, running at low speed and small load, running at high speed, accelerating and decelerating rapidly, and the engine is cold, too much recycling waste will have a serious impact on the performance of the engine, resulting in extremely unstable idling or even flameout, flashing fault lights, failure to meet the annual emission standards, burning engine oil, blue smoke in exhaust gas and other failures.

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