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The exhaust gas recirculation valve is a component commonly found on many road-going vehicles. It is a part of the vehicle’s exhaust gas recirculation (EGR) system, an emissions system designed to recirculate exhaust gases back into the vehicle’s intake in order to reduce cylinder temperatures and NOx emissions. The EGR valve is one of the main components controlling the flow and recirculation of these exhaust gases. When the valve is opened, exhaust gases are allowed through the vehicle’s EGR system to help control vehicle emissions. When the EGR valve has an issue, it can cause problems with the flow and operation of the EGR system, which can lead to increased emissions and performance issues. Usually, a bad or failing EGR valve will produce any these 4 symptoms that can alert the driver of a potential issue.
1. Engine Performance Issues
Another common sign of a bad EGR valve is engine performance issues. A clogged or malfunctioning EGR valve can disrupt the vehicle’s air-fuel ratio, which can cause engine performance issues such as a reduction in power and fuel efficiency. The vehicle may also stall or hesitate while accelerating.
2. Rough Idle
One of the most common symptoms of a problem with the vehicle’s EGR valve is a rough idle. It is not uncommon for EGR valves to malfunction and become stuck in the open position. This can lead to exhaust gas recirculation, which causes rough idling even when the conditions are not desirable. It may also contribute to a smell of fuel as well
3. Pinging or Knocking Soud During Acceleration
Commonly known as a spark knock, a pinging or knocking sound may occur when the car is accelerating. This means the fuel is detonating within the engine instead of burning steadily. A faulty EGR valve causing this issue doesn’t allow in the right amount of exhaust to dilute the air-fuel mixture and lower combustion chamber temperatures. If this continues to happen, it can lead to other engine component failures. The EGR valve will need to be replaced or cleaned of built-up carbon deposits.
4. Check Engine Light Comes On
An illuminated Check Engine Light is another symptom of bad or failing EGR valve. If the computer detects an issue with the vehicle’s EGR valve circuit or position, it will set off the Check Engine Light in order to notify the driver of the issue. The Check Engine Light can be activated by a wide variety of other issues, so having the computer scanned for trouble codes is highly recommended.
The EGR valve is an important emissions component, especially for vehicles in states with strict emissions regulations. You won’t be able to pass a smog test with a faulty EGR valve. If you suspect your vehicle’s EGR valve of having an issue, have the vehicle inspected by a professional technician to determine if the vehicle needs an EGR valve replacement.
Schedule Exhaust Gas Recirculation/EGR Valve Replacement
The EGR (Exhaust Gas Recirculation) valve helps lower the car’s exhaust emissions (gases from the tailpipe). It recirculates the portion of the gasses coming out of the engine by putting in back into the intake manifold, where the engine can burn it again, thereby reducing the emissions. The EGR ... LEARN MORESEE PRICING & SCHEDULING