Duramax EGR Valve Symptoms

If your vehicle is acting strange, you may be wondering about the Duramax EGR valve symptoms that you should know about. This is a good question to ask, as Duramax EGR valves can go bad and need to be repaired or replaced.


When this happens, you want to be able to catch the problem before it gets severe and starts to cause damage. As it is never a good idea to operate your vehicle if something is not working as it should.

This can lead to more damage down the road and create a more costly repair than it otherwise would have been. Keep reading to find out more about Duramax EGR valve symptoms and what you should look for.

Symptoms of a Bad Duramax EGR Valve

If you are not an expert with vehicle parts, you may not understand the Duramax EGR valve symptoms when something has gone wrong. These symptoms, such as rough idling or a strong fuel smell can indicate a bad EGR valve.

This is something that can be important to know as you will want to be aware of the signs to look for in case of a bad Duramax EGR valve. As you never know when this valve may go bad, and it needs to be repaired or replaced.

It is also important to remember that when it comes to vehicles, symptoms can be a sign of all kinds of issues. So the symptoms listed below may not necessarily indicate an issue with your EGR valve.

These kinds of symptoms can apply to a lot of different issues with your vehicle, so it is always a good idea to get them checked out. You can do this by scheduling a checkup with your auto body service.

Overall, it is always a good idea to perform regular maintenance on your vehicle to try to prevent these issues. As taking your vehicle to get serviced regularly is going to ensure that issues like this will be caught before they become more severe.

Rough Idling

Rough idling is not normal for the majority of vehicles, as this usually indicates an issue with an auto part. This is when your vehicle is idling and it is either jiggling or vibrating in a rough way that is unusual.

It may also jiggle or vibrate when you go to start your vehicle after it has been stopped or idle. This can indicate a variety of issues that may not necessarily have anything to do with the EGR valve.

EGR Valve Sticking Closed

If the Duramax EGR valve has gone bad, this can also result in it sticking close, which will create a variety of issues. When this happens, it will block the exhaust gasses from flowing into the intake manifold as they should.

This can cause your vehicle to fail the car emissions test as well as for the check engine light to turn on. If the valve is sticking, this can create a variety of issues, and you should have your vehicle checked out as quickly as possible.

Strong Fuel Smell

When your EGR valve has gone bad, there will be an excess of hydrocarbons that are leaving the tailgate of the vehicle. This will end up creating a strong fuel smell that will be noticeable and out of the ordinary.

In general, vehicles should not smell strongly of fuel as this usually indicates some kind of issue or leak. If this is the case, you should immediately get your vehicle checked out to see if it is the EGR valve or some other issue.


If there is something wrong with your Duramax EGR valve, you may begin to hear strange noises. This can happen if the EGR valve has stuck open or stuck close, resulting in out-of-the-ordinary sounds.

This can create pinging or popping noises that happen when you start the ignition of the vehicle. A second ignition can also because, which will result in it sounding like your vehicle has started twice in a row.

For the most part, vehicles should not make noises except for the basic noises of starting and driving on the road. If you begin to hear out-of-the-ordinary noises coming from your vehicle, this could indicate a serious issue that needs to be checked out or fixed.