EGR Valve Replacement
What is an EGR valve?
The exhaust gas recirculation (EGR) valve recirculates a portion of the exhaust gas back into the combustion chamber in order to lower the combustion temperature, which helps your vehicle produce fewer oxides of nitrogen, a major pollutant.
How does the EGR valve work?
The exhaust gas recirculation (EGR) valve is computer controlled and/or electrically or vacuum operated. The valve is commanded open at the appropriate time to also the proper amount of exhaust gas to enter the combustion chamber. This exhaust gas lowers the combustion temperature, reducing the amount of oxides of nitrogen (NOx) created during the combustion process.
Problems with the EGR valve can trigger trouble codes, which will cause the Check Engine Light to come on. The vehicle may also fail emissions tests.
EGR valve problems can cause vehicles to idle roughly.
What are the symptoms related to a bad EGR valve?
In many cases you would be able drive the vehicle with a failed Exhaust gas recirculation (EGR) valve. However, in some cases the engine may run so poorly you cannot drive the vehicle. A non functioning EGR Valve can result in a pinging or rattling noise from engine when it is under load (when accelerating).
More symptoms of a bad EGR valve
Can I drive with a bad EGR valve?
In many cases you would be able drive the vehicle with a failed Exhaust gas recirculation (EGR) valve. However, sometimes the engine may run so poorly you cannot drive the vehicle. If you are hearing a ping or rattling type noise from the engine you should not drive the vehicle.