When Should the Experts in Mountain View Replace the EGR Valve in Your Audi?
When you drive a luxury car, you expect impeccable performance. Audi is a car that truly can deliver on perfection. But as with any car, there are mechanical components that can wear out over time. The EGR valve is one part you may find yourself replacing at some point. Even though you will most likely take your car to an expert service technician, it’s good to know something about the problem before taking your car into the shop.
To begin, let’s go over what the EGR valve is and what it does for your car. This basic information will help explain why this component plays a critical role in your Audi’s performance.
What is the EGR valve?
The exhaust gas recirculation (EGR) valve is part of the exhaust system that is used to reduce noxious gases and decrease temperatures created when the combustion process burns fuel to propel the car. The combustion process creates internal temperatures that easily exceed 2000ºF. When fuel burns at this temperature, it produces a gas containing nitrogen oxide (NOₓ), which produces smog and carbon dioxide (CO2), which does not burn. The EGR valve sends a small amount of exhaust back into the combustion process.
What are the signs of a bad EGR valve?
The 2 most common problems with an EGR valve is that it is either stuck open or it is stuck closed. In most cases, the symptoms of these two problems are identical. We’ll cover the most common signs below.
1. Engine Misfiring
When the valve is stuck closed, the temperature in the combustion process is too hot and the fuel in the combustion chamber will ignite early. It may also make a loud popping or knocking sound. If the valve is stuck closed, the reverse will happen. Too much exhaust will be released back into the combustion process and you may experience what feels like the engine stumbling while idling or when driving at low speeds. This will happen because the fuel is not igniting at the right time due to the excess CO2.
2. Smell of Fuel
When the combustion process is not working properly, fuel that should be ignited is not, and instead, it is released through the exhaust system. Depending on the severity of the problem, this may be a very strong odor. If you notice this smell while your car is parked in the garage, call 911 and leave the property immediately. Do not open the garage door. Leave the garage immediately. Fumes from fuel are flammable and serious injury or damage could occur from even the smallest static spark.
If your Audi is outside, call your service station. Driving your car when there is excess fuel escaping from the combustion system is dangerous. They can advise you on how to safely address this issue. Make sure to tell the service center that you are concerned about the fumes igniting so that they understand the issue. Even if the car is outside, if you smell fuel, you can call 911 and the fire department can help you assess the situation for your safety.
3. Loss or Reduction of Performance
Audi is a well-built, super-reliable, high-performance vehicle. If you have been an Audi owner for any length of time, you know what to expect from your vehicle. If your Audi starts running sluggish, idling too low, stalling out, knocking, or anything that is not typical for your vehicle, you should have it checked out. It’s always best to address issues early on rather than wait for them to become bigger problems where the cost of the repair will undoubtedly have increased.
4. Check Engine Light or Malfunction Indicator Light (MIL) is On
Some people believe that the check engine light is set to come on after a certain number of miles are driven. Never assume that is why your check engine light has come on. If there is absolutely nothing wrong with your car, an honest service technician is going to tell you that. But more often than not, if the check engine light is on, something is going on that needs to be addressed. It is in your best interest to get it fixed before your car is experiencing symptoms and potentially causing additional damage.
Let the Experts at German Motor Specialist Replace the EGR Valve in Your Audi
German Motor Specialists services Atherton, Cupertino, Los Altos, Los Altos Hills, Menlo Park, Mountain View, Palo Alto, Redwood City, Santa Clara, Stanford, and Sunnyvale, California. Having been in business for over 20 years, and with a customer satisfaction rate of 99.99% (based on 120 votes and 110 reviews over 6 months), German Motor Specialist is proud to offer you the highest level of service for your Audi. We invite you to visit us or give us a call and ask us about how we can help you. We have no doubt that you will be glad you did.Please follow and like us: