Exhaust gas recirculation valves, or EGR valves, redirect hot exhaust gases back into your engine's intake manifold. EGR valves cut emissions and enhance engine efficiency; a failed EGR valve will result in a rough idle, loss of power, poor fuel economy and a trouble code that illuminates the Check Engine light. The good news is that an EGR valve is simple to replace -- shop Advance Auto Parts for EGR valves from top brands like ACDelco, Intermotor, BWD and Motorcraft.
The EGR valve is one of the earlier efforts at reducing emissions, dating back to the mid-70s. EGR valves redirect a portion of exhaust gases back into the cylinders to be burned again, which cuts nitrogen oxide emissions and helps reduce peak temperatures inside the combustion chambers.
The EGR valve can get fouled by carbon and no longer cycle on and off (it depends on coolant temperature for its operation), resulting in a trouble code, Check Engine light, poor fuel economy and a tendency to surge and stumble at part throttle. Don't put up with drivability problems - shop Advance Auto Parts for a replacement EGR valve kit.