What does a EGR control solenoid do?
Its purpose is to recirculate exhaust gases that have exited the engine, back into the intake manifold so that they can be reburned. The EGR solenoid is controlled by the engine computer, and activated at very specific times in order to achieve the best performance, efficiency, and emissions from the engine.
What is the function of an EGR solenoid valve?
Go to the drop-down menu bar at the lower left corner of the Waveform Library window and select, EGR (Exhaust Gas Recirculation) control solenoid voltage The function of Exhaust Gas Recirculation (EGR) is to lower the oxides of nitrogen (NO x) under certain circumstances.
How to test an EGR valve, a simple procedure?
Connect a hand vacuum pump to the EGR valve in place of the vacuum hose and apply 15 in-Hg of vacuum to the valve (if you don’t have access to a vacuum pump you may borrow-rent one from a local auto parts store). As you apply vacuum to the valve, check for diaphragm movement.
What happens when the EGR valve fails to close?
When this flow pattern fails, you begin to notice a decline in engine performance. For instance, this will happen if the EGR valve fails to close completely as the engine idles, or fails to open when engine speed increases. Unfortunately, problems in the EGR system and valve will happen sooner or later.
Where does the EGR take place in a Vauxhall?
GM/Vauxhall/Opel have a similar system, but the solenoid valve, lift sensor and the EGR valve are all one unit. Fault-finding is also made harder by the fact that EGR takes places inside the cylinder head through a passage connecting the exhaust and inlet manifolds.
Go to the drop-down menu bar at the lower left corner of the Waveform Library window and select, EGR (Exhaust Gas Recirculation) control solenoid voltage The function of Exhaust Gas Recirculation (EGR) is to lower the oxides of nitrogen (NO x) under certain circumstances.
How does the exhaust gas recirculation ( EGR ) circuit work?
It uses engine vacuum to operate the EGR valve, which opens and closes to allow the exhaust gases into the intake. It receives 12-volt power from the powertrain control module when operating conditions — engine running and battery voltage above 12 volts — are met.
Connect a hand vacuum pump to the EGR valve in place of the vacuum hose and apply 15 in-Hg of vacuum to the valve (if you don’t have access to a vacuum pump you may borrow-rent one from a local auto parts store). As you apply vacuum to the valve, check for diaphragm movement.
Why is my exhaust gas recirculation valve not working?
After miles of service, the exhaust gas recirculation (EGR) system — especially the EGR valve — will lead to engine performance problems due to carbon buildup, components mechanical problems, or vacuum hose leaks.