EGR Valve for 2003-09 Volvo VNL VNM VHD Straight /Tractor Truck Engine Desg. D12

What is an EGR valve? The EGR valve is the main component of the EGR system and it's normally closed. It connects the exhaust manifold to the intake manifold and is controlled by either a vacuum or a built-in electric step motor. The function of the EGR valve is to control the flow of exhaust gas being recirculated depending on the engine load. How does an EGR valve work? EGR systems recycle a portion of the exhaust gas back into the combustion chamber. Where it combines with fresh intake air.

The EGR valve begins working once the engine has started, attained the correct operating temperature. EGR Valve for 2003-09 Volvo VNL VNM VHD Straight /Tractor Truck Engine Desg. And the vehicle's speed increases. Gradually, the EGR valve regulates the flow of exhaust gases. Once the vehicle slows down and the engine stops, the EGR valve will return to its closed position and prevent the flow of exhaust gases.

Problems with an EGR valve Black smoke coming out of car exhaust A frequent problem with the EGR valve is sticking due to a build up of carbon deposits. If the EGR valve fails to open or close, the engine warning light will illuminate on the dashboard. A strong odour of fuel smelt from inside the vehicle is also a sign of a failing EGR valve. We handle orders within 3Days at Monday to Friday and Saturday forenoon.

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