Check Engine LightĬars, trucks, tractor-trailers, and almost anything else with an engine that is on the road today will have some sort of ECU controlling all the parameters to make sure everything is in good working condition. Decreased Engine Performanceĭoes your truck feel sluggish? Does it not have the same amount of acceleration as it once did? Something as simple as a defective EGR valve could be to blame. A defective exhaust gas recirculating valve could be the culprit. One of the first things to check is the EGR valve. If you spend hours behind the wheel each day, chances are that even the slightest increase in fuel consumption will get noticed. Any signs of excessive smoke should be taken note of and investigated as soon as possible to avoid further issues. Coal rolling, locomotive-like engines are now a thing of the past. Modern diesel engines produce next to no smoke. One of the reasons that your truck may have a rough idle is due to a defective EGR valve that is stuck in the open or closed position. A “sloppy” or rough idle can be caused by one of several things. Rough IdleĪny change in RPM at idle should be cause for concern. Let’s have a look at some of the common signs which point to a failing EGR valve: 1. They include but are not limited to, catalytic converters/DPF, DEF systems, and of course EGR valves. Luckily, engine manufacturers have introduced several methods of reducing the overall amount of pollutants from entering our atmosphere. When compared to gasoline, the diesel engine produces comparably more pollutants such as NOx and carbon dioxide.
Why does your EGR valve fail? What causes it to become stuck open or closed? What can be done to prevent future EGR valve issues? We, at Highway & Heavy Parts, will be answering these questions alongside many others in this post. But did you know that this can cause more harm than good? Turbocharged diesel engines are designed to work in conjunction with the EGR valve as well as other key, emissions systems. It works by recirculating a portion of the exhaust gasses back into the motor, which helps reduce the overall pollution.Īt the first sign of failure, some owners will choose to bypass the entire system as opposed to repairing it. In an attempt to reduce emissions, manufacturers introduced the EGR valve on all modern diesel engines. Unfortunately, they have gotten a bad reputation over the years as being one of the most common parts to fail on an otherwise durable engine. An EGR or exhaust gas recirculating valve is a key part of any modern diesel engine.