Most Audi owners do not pay much attention to the EGR valve issues since the symptoms are not very noticeable at the initial stage. Leaving it unattended for a long time and not replacing it when it is due, though, may result in expensive repairs, severe engine problems, and other serious complications. If the check light is on in your Audi and you are unsure if it is caused by the EGR valve, then it is best to take necessary measures before the problem gets out of hand.
What Does the EGR Valve Do?
The EGR valve is a part of the engine that helps to regulate the amount of nitrogen oxide (NOx) emissions, which are toxic byproducts of the combustion process. This component reinserts a small amount of the exhaust gases back into the engine, which helps to lower the combustion temperatures and emissions. When the EGR valve is functioning optimally, your Audi is fuel efficient and emits fewer emissions. When it starts to fail, however, your engine’s performance, fuel efficiency, and emission control are affected.
Signs of a Failing EGR Valve
- Excessive Exhaust Smoke: One of the main signs of a faulty EGR valve is that there will be thick, black smoke emanating from the exhaust pipe. If you see something like that and you are driving, it is high time you took your Audi for a service.
- Rough Idling and Stalling: A faulty EGR valve can cause your Audi to idle roughly or even stall when it is stationary. This can happen when the valve remains open and lets excessive exhaust gas into the engine which leads to an improper air-fuel mixture.
- Increased Fuel Consumption: When the EGR valve is stuck open or closed, the fuel efficiency of the Audi will reduce. You may also find that you are refueling more frequently because the engine is struggling to burn the air-fuel mixture properly.
- Engine Knocking: If the EGR valve is stuck closed, combustion temperatures will become too high and the engine knocking (pinging) may occur. This can be detrimental to the engine in the long run.
Why You Shouldn’t Delay Replacing a Bad EGR Valve
- Carbon Buildup: One of the main problems associated with a bad EGR valve is that there will be more carbon deposits within the intake manifold and the cylinders, which will lead to more problems in the future. It is important to replace it on time in order to avoid having to do extensive cleaning and repair work.
- Expensive Engine Repair: If your car has a faulty EGR valve, the longer you continue using the car, the more you are placing pressure on your engine. This can cause carbon deposits, overheating, and wearing out of the engine parts, which are very costly to replace.
- Fuel Economy: If you neglect a faulty EGR valve, your Audi vehicle will consume more fuel than it should. Replacing it on time ensures that your fuel efficiency returns to normal and you end up spending less at the pump.
- Emissions Tests Failure: A faulty EGR valve might lead to your Audi failing emissions tests and this makes it unlawful to drive the vehicle in some places until it is repaired. Replacing the valve means that your vehicle will not be emitting any hazardous substances to the environment and it will be in compliance with the set laws.
- Performance: If your Audi car hesitates while accelerating, stalls or has a hard time accelerating, the EGR valve may be to blame. Repairing it brings back the power and responsiveness of the engine to make your driving experience a pleasant one.
Get Audi EGR Solutions from the Best Auto Repair and Maintenance Company in Georgia
At Solo Motorsports, we are the 
most preferred auto repair shop for Audi repair and maintenance. Our highly trained and experienced mechanics have been providing car care services for more than two decades, and can efficiently determine and solve any problem affecting your Audi. We have our workshop spread across 9 locations in Georgia including Lawrenceville, Norcross, Atlanta, Roswell, Gainesville, Johns Creek, and Alpharetta. If you experience the check engine light indicator, a decline in your fuel economy, or your engine does not sound or feel like it used to, we are here to assist you. Call our workshop closest to you today!