EGR Valve: What It Does and Signs It May Need Attention
Modern vehicles are designed to reduce harmful emissions and improve efficiency. One important part of that system is the EGR valve, which stands for Exhaust Gas Recirculation.
The EGR valve helps control emissions by directing a measured amount of exhaust gas back into the engine. This lowers combustion temperatures and helps reduce certain harmful emissions. Like any vehicle component, the EGR system can become clogged, fail, or develop other problems over time.
Signs of a Problem with the EGR Valve
A failing or restricted EGR valve can cause several noticeable symptoms, including:
- Slow, hesitant, or uneven acceleration
- Rough idling or frequent stalling
- Engine knocking or pinging during acceleration
- Reduced fuel economy
- Check Engine Light
If you're experiencing any of these symptoms, it's a good idea to have your vehicle inspected. Driving with an EGR system problem can affect engine performance and, in some cases, contribute to additional engine or emissions-system problems.
How Auto Select Can Help
At Auto Select, our technicians can diagnose EGR-related problems using professional diagnostic equipment. We can scan your vehicle's computer for trouble codes, test the EGR system, and inspect related wiring, connections, and vacuum lines when applicable.
If the EGR valve is determined to be the problem, we'll recommend the appropriate repair. Depending on the vehicle, this may include replacing the valve and gasket, reconnecting electrical or vacuum connections, and testing the system to make sure it's operating properly. A road test may also be performed to verify the repair.
Keep Your Vehicle Running Right
A properly functioning EGR system helps your vehicle control emissions while maintaining proper engine performance and efficiency. If your vehicle is running rough, lacking power, getting poor fuel mileage, or showing a Check Engine Light, don't ignore it.