{"id":104282,"date":"2023-11-14T12:33:55","date_gmt":"2023-11-14T12:33:55","guid":{"rendered":"https:\/\/www.dubizzle.com\/blog\/cars\/?p=104282"},"modified":"2023-11-14T12:34:51","modified_gmt":"2023-11-14T12:34:51","slug":"egr-valve","status":"publish","type":"post","link":"https:\/\/www.dubizzle.com\/blog\/cars\/egr-valve\/","title":{"rendered":"Auto Anatomy: EGR Valves"},"content":{"rendered":"\n<ul class=\"wp-block-list\"><li><a href=\"#h-how-does-an-egr-valve-work\">EGR Valve Working<\/a><\/li><li><a href=\"#h-reasons-behind-egr-valve-failure\">Causes of a Failed EGR System<\/a><\/li><li><a href=\"#h-symptoms-of-a-failed-egr-valve\">Symptoms<\/a><\/li><li><a href=\"#h-how-to-fix-an-egr-valve\">Fixes<\/a><\/li><li><a href=\"#h-faqs\">FAQs<\/a><\/li><\/ul>\n\n\n\n<p>Since air contains nitrogen, oxygen and inert gases, a human breathes nearly 78% nitrogen from the air alongside oxygen. Besides, a car needs air to burn the fuel. That said, if the engine combusts the air-fuel mixture at high temperatures, it can produce nitrogen oxides (NO<sub>x<\/sub>), which is harmful to the environment. However, conventional vehicles come equipped with exhaust gas recirculation (EGR) valves.<\/p>\n\n\n\n<p>The valve improves fuel efficiency and reduces the NO<sub>x<\/sub> of<sub> <\/sub>conventional cars. But how does it work? Let\u2019s find all the details on the EGR valve, its working and the symptoms of a clogged valve.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\" id=\"h-how-does-an-egr-valve-work\">How Does an EGR Valve Work?<\/h2>\n\n\n\n<figure class=\"wp-block-image size-large\"><img loading=\"lazy\" decoding=\"async\" width=\"1024\" height=\"640\" src=\"https:\/\/d2hucwwplm5rxi.cloudfront.net\/wp-content\/uploads\/2023\/11\/14073625\/EGR-Valve-_-Body-2-7-11-23-1-1024x640.jpg\" alt=\"Functioning of the EGR valves\" class=\"wp-image-104291\" srcset=\"https:\/\/d2hucwwplm5rxi.cloudfront.net\/wp-content\/uploads\/2023\/11\/14073625\/EGR-Valve-_-Body-2-7-11-23-1-1024x640.jpg 1024w, https:\/\/d2hucwwplm5rxi.cloudfront.net\/wp-content\/uploads\/2023\/11\/14073625\/EGR-Valve-_-Body-2-7-11-23-1-300x188.jpg 300w, https:\/\/d2hucwwplm5rxi.cloudfront.net\/wp-content\/uploads\/2023\/11\/14073625\/EGR-Valve-_-Body-2-7-11-23-1-768x480.jpg 768w, https:\/\/d2hucwwplm5rxi.cloudfront.net\/wp-content\/uploads\/2023\/11\/14073625\/EGR-Valve-_-Body-2-7-11-23-1-640x400.jpg 640w, https:\/\/d2hucwwplm5rxi.cloudfront.net\/wp-content\/uploads\/2023\/11\/14073625\/EGR-Valve-_-Body-2-7-11-23-1-421x263.jpg 421w, https:\/\/d2hucwwplm5rxi.cloudfront.net\/wp-content\/uploads\/2023\/11\/14073625\/EGR-Valve-_-Body-2-7-11-23-1-558x349.jpg 558w, https:\/\/d2hucwwplm5rxi.cloudfront.net\/wp-content\/uploads\/2023\/11\/14073625\/EGR-Valve-_-Body-2-7-11-23-1-363x227.jpg 363w, https:\/\/d2hucwwplm5rxi.cloudfront.net\/wp-content\/uploads\/2023\/11\/14073625\/EGR-Valve-_-Body-2-7-11-23-1-250x156.jpg 250w, https:\/\/d2hucwwplm5rxi.cloudfront.net\/wp-content\/uploads\/2023\/11\/14073625\/EGR-Valve-_-Body-2-7-11-23-1-368x230.jpg 368w, https:\/\/d2hucwwplm5rxi.cloudfront.net\/wp-content\/uploads\/2023\/11\/14073625\/EGR-Valve-_-Body-2-7-11-23-1-774x484.jpg 774w, https:\/\/d2hucwwplm5rxi.cloudfront.net\/wp-content\/uploads\/2023\/11\/14073625\/EGR-Valve-_-Body-2-7-11-23-1-672x420.jpg 672w, https:\/\/d2hucwwplm5rxi.cloudfront.net\/wp-content\/uploads\/2023\/11\/14073625\/EGR-Valve-_-Body-2-7-11-23-1-437x273.jpg 437w, https:\/\/d2hucwwplm5rxi.cloudfront.net\/wp-content\/uploads\/2023\/11\/14073625\/EGR-Valve-_-Body-2-7-11-23-1-301x188.jpg 301w, https:\/\/d2hucwwplm5rxi.cloudfront.net\/wp-content\/uploads\/2023\/11\/14073625\/EGR-Valve-_-Body-2-7-11-23-1-240x150.jpg 240w, https:\/\/d2hucwwplm5rxi.cloudfront.net\/wp-content\/uploads\/2023\/11\/14073625\/EGR-Valve-_-Body-2-7-11-23-1-771x482.jpg 771w, https:\/\/d2hucwwplm5rxi.cloudfront.net\/wp-content\/uploads\/2023\/11\/14073625\/EGR-Valve-_-Body-2-7-11-23-1-669x418.jpg 669w, https:\/\/d2hucwwplm5rxi.cloudfront.net\/wp-content\/uploads\/2023\/11\/14073625\/EGR-Valve-_-Body-2-7-11-23-1-435x272.jpg 435w\" sizes=\"auto, (max-width: 1024px) 100vw, 1024px\" \/><figcaption>An EGR system circulates the exhaust gases in the engine&#8217;s combustion chamber to reduce the temperature<\/figcaption><\/figure>\n\n\n\n<p>The EGR valve is a component in the engine\u2019s intake manifold. Controlled by an engine control unit (ECU) or <a href=\"https:\/\/www.dubizzle.com\/blog\/cars\/car-computer-importance\/\" target=\"_blank\" rel=\"noreferrer noopener\">car computers<\/a>, the function of an EGR valve in the car is to regulate the flow of exhaust gases into the intake manifold.<\/p>\n\n\n\n<p>It receives signals from the ECU to recirculate the optimal amount of exhaust gases. That said, it increases the engine efficiency. At a steady acceleration, the valve opens and allows the exhaust gases to flow into the intake manifold. Then, these gases mix with the fresh air-fuel mixture.&nbsp;<\/p>\n\n\n\n<p>Since exhaust gases contain low oxygen content, they are difficult to burn. It reduces the engine combustion temperature. With lower combustion temperatures, the EGR valve helps inhibit the nitrogen oxide (NO<sub>x<\/sub>) formation.&nbsp;<\/p>\n\n\n\n<p>Different types of car sensors, such as engine load, temperature and <a href=\"https:\/\/www.dubizzle.com\/blog\/cars\/wheel-speed-sensors-types\/\" target=\"_blank\" rel=\"noreferrer noopener\">speed sensors<\/a>, send signals to the ECU. This helps function the EGR valve accordingly. Moreover, the load will be high when climbing the hill. In that case, ECU sends signals to close the EGR valves. This allows the engine to operate at higher temperatures and produce optimal performance.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\" id=\"h-reasons-behind-egr-valve-failure\">Reasons Behind EGR Valve Failure<\/h2>\n\n\n\n<p>Reducing nitrogen oxide and improving vehicle performance and fuel economy, the EGR system can be subject to malfunction. Before we delve into its symptoms, let\u2019s learn about the causes of EGR valve failure.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\" id=\"h-carbon-buildup-and-clogging\">Carbon Buildup and Clogging<\/h3>\n\n\n\n<p>Over time, carbon can accumulate on the valve and its passages, restricting proper operation. This <a href=\"https:\/\/www.dubizzle.com\/blog\/cars\/carbon-buildup\/\" target=\"_blank\" rel=\"noreferrer noopener\">carbon buildup<\/a> can occur due to incomplete combustion and the recirculation of exhaust gases. Besides, the valve can get clogged with debris, dirt or soot. Obstructing the flow of exhaust gases, clogged EGR valves affect the performance. Clogging is a result of poor fuel quality, engine oil contamination or general wear and tear.<\/p>\n\n\n\n<figure class=\"wp-block-image size-large\"><img loading=\"lazy\" decoding=\"async\" width=\"1024\" height=\"640\" src=\"https:\/\/d2hucwwplm5rxi.cloudfront.net\/wp-content\/uploads\/2023\/11\/14073651\/EGR-Valve-_-Body-1-7-11-23-1-1024x640.jpg\" alt=\"A new EGR valve \" class=\"wp-image-104292\" srcset=\"https:\/\/d2hucwwplm5rxi.cloudfront.net\/wp-content\/uploads\/2023\/11\/14073651\/EGR-Valve-_-Body-1-7-11-23-1-1024x640.jpg 1024w, https:\/\/d2hucwwplm5rxi.cloudfront.net\/wp-content\/uploads\/2023\/11\/14073651\/EGR-Valve-_-Body-1-7-11-23-1-300x188.jpg 300w, https:\/\/d2hucwwplm5rxi.cloudfront.net\/wp-content\/uploads\/2023\/11\/14073651\/EGR-Valve-_-Body-1-7-11-23-1-768x480.jpg 768w, https:\/\/d2hucwwplm5rxi.cloudfront.net\/wp-content\/uploads\/2023\/11\/14073651\/EGR-Valve-_-Body-1-7-11-23-1-640x400.jpg 640w, https:\/\/d2hucwwplm5rxi.cloudfront.net\/wp-content\/uploads\/2023\/11\/14073651\/EGR-Valve-_-Body-1-7-11-23-1-421x263.jpg 421w, https:\/\/d2hucwwplm5rxi.cloudfront.net\/wp-content\/uploads\/2023\/11\/14073651\/EGR-Valve-_-Body-1-7-11-23-1-558x349.jpg 558w, https:\/\/d2hucwwplm5rxi.cloudfront.net\/wp-content\/uploads\/2023\/11\/14073651\/EGR-Valve-_-Body-1-7-11-23-1-363x227.jpg 363w, https:\/\/d2hucwwplm5rxi.cloudfront.net\/wp-content\/uploads\/2023\/11\/14073651\/EGR-Valve-_-Body-1-7-11-23-1-250x156.jpg 250w, https:\/\/d2hucwwplm5rxi.cloudfront.net\/wp-content\/uploads\/2023\/11\/14073651\/EGR-Valve-_-Body-1-7-11-23-1-368x230.jpg 368w, https:\/\/d2hucwwplm5rxi.cloudfront.net\/wp-content\/uploads\/2023\/11\/14073651\/EGR-Valve-_-Body-1-7-11-23-1-774x484.jpg 774w, https:\/\/d2hucwwplm5rxi.cloudfront.net\/wp-content\/uploads\/2023\/11\/14073651\/EGR-Valve-_-Body-1-7-11-23-1-672x420.jpg 672w, https:\/\/d2hucwwplm5rxi.cloudfront.net\/wp-content\/uploads\/2023\/11\/14073651\/EGR-Valve-_-Body-1-7-11-23-1-437x273.jpg 437w, https:\/\/d2hucwwplm5rxi.cloudfront.net\/wp-content\/uploads\/2023\/11\/14073651\/EGR-Valve-_-Body-1-7-11-23-1-301x188.jpg 301w, https:\/\/d2hucwwplm5rxi.cloudfront.net\/wp-content\/uploads\/2023\/11\/14073651\/EGR-Valve-_-Body-1-7-11-23-1-240x150.jpg 240w, https:\/\/d2hucwwplm5rxi.cloudfront.net\/wp-content\/uploads\/2023\/11\/14073651\/EGR-Valve-_-Body-1-7-11-23-1-771x482.jpg 771w, https:\/\/d2hucwwplm5rxi.cloudfront.net\/wp-content\/uploads\/2023\/11\/14073651\/EGR-Valve-_-Body-1-7-11-23-1-669x418.jpg 669w, https:\/\/d2hucwwplm5rxi.cloudfront.net\/wp-content\/uploads\/2023\/11\/14073651\/EGR-Valve-_-Body-1-7-11-23-1-435x272.jpg 435w\" sizes=\"auto, (max-width: 1024px) 100vw, 1024px\" \/><figcaption>Carbon buildup EGR valves can affect the engine performance and efficiency<\/figcaption><\/figure>\n\n\n\n<h3 class=\"wp-block-heading\" id=\"h-faulty-valve-position-sensor\">Faulty Valve Position Sensor<\/h3>\n\n\n\n<p>The valve includes a position sensor to monitor its opening and closing. However, if this sensor fails, it gives incorrect valve positioning, affecting the engine&#8217;s performance. Electronic issues, wiring problems or sensor failure may contribute to the malfunctioning EGR valve.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\" id=\"h-vacuum-leaks\">Vacuum Leaks<\/h3>\n\n\n\n<p>Many EGR systems rely on vacuum pressure to operate. However, the valves won\u2019t function correctly if the vacuum or EGR diaphragm leaks. You can <a href=\"https:\/\/www.dubizzle.com\/blog\/cars\/detect-car-vacuum-leak\/\" target=\"_blank\" rel=\"noreferrer noopener\">detect vacuum leaks<\/a> from the causes, including cracked hoses, loose connections or deteriorating diaphragms.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\" id=\"h-mechanical-failure\">Mechanical Failure<\/h3>\n\n\n\n<p>EGR valves can experience wear and tear over time. The wear and tear occurs due to oil contamination or excessive heat. These can lead to damaged seals or sticking valves, causing failure in opening and closing.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\" id=\"h-symptoms-of-a-failed-egr-valve\">Symptoms of a Failed EGR Valve<\/h2>\n\n\n\n<p>While these symptoms can indicate various common car issues, here are the <a href=\"https:\/\/www.dubizzle.com\/blog\/cars\/bad-egr-valve-symptoms\/\" target=\"_blank\" rel=\"noreferrer noopener\">symptoms of a failing EGR valve<\/a>.<\/p>\n\n\n\n<figure class=\"wp-block-image size-large\"><img loading=\"lazy\" decoding=\"async\" width=\"1024\" height=\"640\" src=\"https:\/\/d2hucwwplm5rxi.cloudfront.net\/wp-content\/uploads\/2023\/11\/14073703\/EGR-Valve-_-Body-3-7-11-23-1-1024x640.jpg\" alt=\"A rusted EGR valve\" class=\"wp-image-104293\" srcset=\"https:\/\/d2hucwwplm5rxi.cloudfront.net\/wp-content\/uploads\/2023\/11\/14073703\/EGR-Valve-_-Body-3-7-11-23-1-1024x640.jpg 1024w, https:\/\/d2hucwwplm5rxi.cloudfront.net\/wp-content\/uploads\/2023\/11\/14073703\/EGR-Valve-_-Body-3-7-11-23-1-300x188.jpg 300w, https:\/\/d2hucwwplm5rxi.cloudfront.net\/wp-content\/uploads\/2023\/11\/14073703\/EGR-Valve-_-Body-3-7-11-23-1-768x480.jpg 768w, https:\/\/d2hucwwplm5rxi.cloudfront.net\/wp-content\/uploads\/2023\/11\/14073703\/EGR-Valve-_-Body-3-7-11-23-1-640x400.jpg 640w, https:\/\/d2hucwwplm5rxi.cloudfront.net\/wp-content\/uploads\/2023\/11\/14073703\/EGR-Valve-_-Body-3-7-11-23-1-421x263.jpg 421w, https:\/\/d2hucwwplm5rxi.cloudfront.net\/wp-content\/uploads\/2023\/11\/14073703\/EGR-Valve-_-Body-3-7-11-23-1-558x349.jpg 558w, https:\/\/d2hucwwplm5rxi.cloudfront.net\/wp-content\/uploads\/2023\/11\/14073703\/EGR-Valve-_-Body-3-7-11-23-1-363x227.jpg 363w, https:\/\/d2hucwwplm5rxi.cloudfront.net\/wp-content\/uploads\/2023\/11\/14073703\/EGR-Valve-_-Body-3-7-11-23-1-250x156.jpg 250w, https:\/\/d2hucwwplm5rxi.cloudfront.net\/wp-content\/uploads\/2023\/11\/14073703\/EGR-Valve-_-Body-3-7-11-23-1-368x230.jpg 368w, https:\/\/d2hucwwplm5rxi.cloudfront.net\/wp-content\/uploads\/2023\/11\/14073703\/EGR-Valve-_-Body-3-7-11-23-1-774x484.jpg 774w, https:\/\/d2hucwwplm5rxi.cloudfront.net\/wp-content\/uploads\/2023\/11\/14073703\/EGR-Valve-_-Body-3-7-11-23-1-672x420.jpg 672w, https:\/\/d2hucwwplm5rxi.cloudfront.net\/wp-content\/uploads\/2023\/11\/14073703\/EGR-Valve-_-Body-3-7-11-23-1-437x273.jpg 437w, https:\/\/d2hucwwplm5rxi.cloudfront.net\/wp-content\/uploads\/2023\/11\/14073703\/EGR-Valve-_-Body-3-7-11-23-1-301x188.jpg 301w, https:\/\/d2hucwwplm5rxi.cloudfront.net\/wp-content\/uploads\/2023\/11\/14073703\/EGR-Valve-_-Body-3-7-11-23-1-240x150.jpg 240w, https:\/\/d2hucwwplm5rxi.cloudfront.net\/wp-content\/uploads\/2023\/11\/14073703\/EGR-Valve-_-Body-3-7-11-23-1-771x482.jpg 771w, https:\/\/d2hucwwplm5rxi.cloudfront.net\/wp-content\/uploads\/2023\/11\/14073703\/EGR-Valve-_-Body-3-7-11-23-1-669x418.jpg 669w, https:\/\/d2hucwwplm5rxi.cloudfront.net\/wp-content\/uploads\/2023\/11\/14073703\/EGR-Valve-_-Body-3-7-11-23-1-435x272.jpg 435w\" sizes=\"auto, (max-width: 1024px) 100vw, 1024px\" \/><figcaption>A corroded valve can show signs, such as a check engine light or unusual sounds from the car<\/figcaption><\/figure>\n\n\n\n<h3 class=\"wp-block-heading\" id=\"h-check-engine-light\"><strong>Check Engine Light&nbsp;<\/strong><\/h3>\n\n\n\n<p>A malfunctioning EGR valve often triggers the check engine <a href=\"https:\/\/www.dubizzle.com\/blog\/cars\/car-dashboard-warning-lights\/\" target=\"_blank\" rel=\"noreferrer noopener\">warning light on the car dashboard<\/a>. The ECU detects the issue with software calibration that causes unusual opening and closing of the valve. After that, it causes the check engine light to illuminate.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\" id=\"h-poor-engine-performance\"><strong>Poor Engine Performance<\/strong><\/h3>\n\n\n\n<p>A failed EGR valve can cause rough idling, stalling or hesitation during acceleration. It may also become a cause of sluggish acceleration. These performance shortages happen due to the malfunctioning EGR valve that causes a <a href=\"https:\/\/www.dubizzle.com\/blog\/cars\/bad-air-fuel-ratio\/\" target=\"_blank\" rel=\"noreferrer noopener\">bad air-fuel ratio<\/a>.&nbsp;<\/p>\n\n\n\n<h3 class=\"wp-block-heading\" id=\"h-more-nox-emissions\"><strong>More NO<\/strong><strong><sub>x<\/sub><\/strong><strong> Emissions<\/strong><\/h3>\n\n\n\n<p>Since the engine won\u2019t be at the best performance due to EGR valve failure, the engine temperature will soar. That said, it will produce NO<sub>x<\/sub> emissions and pollute the air. It is to be noted that nitrogen oxides are very hazardous to health.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\" id=\"h-excessive-exhaust-smoke\"><strong>Excessive Exhaust Smoke<\/strong><\/h3>\n\n\n\n<p>With uncontrolled functioning of the valve, the intake manifold receives an uneven air-fuel mixture. You can see white, grey or black smoke coming out from the car. While it can be due to several other issues in cars, you can check what the different <a href=\"https:\/\/www.dubizzle.com\/blog\/cars\/car-exhaust-smoke\/\" target=\"_blank\" rel=\"noreferrer noopener\">car exhaust smoke<\/a> tells.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\" id=\"h-knocking-or-popping-sound\"><strong>Knocking or Popping Sound<\/strong><\/h3>\n\n\n\n<p>You should <a href=\"https:\/\/www.dubizzle.com\/blog\/cars\/car-sounds-not-ignore\/\" target=\"_blank\" rel=\"noreferrer noopener\">not ignore car sounds<\/a>. These sounds tell about the car problems. That said, a malfunctioning EGR system causes a knocking or popping sound due to the carbon buildup in the engine.&nbsp;<\/p>\n\n\n\n<h2 class=\"wp-block-heading\" id=\"h-how-to-fix-an-egr-valve\"><strong>How to Fix an EGR Valve<\/strong><\/h2>\n\n\n\n<p>A malfunctioning EGR valve causes multiple problems, such as poor performance or excessive emissions. For that reason, it is essential to fix it. Here\u2019s how to fix it.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\" id=\"h-troubleshooting-codes\">Troubleshooting Codes<\/h3>\n\n\n\n<p>Check the troubleshooting codes using an OBD scanner. If you receive the <a href=\"https:\/\/www.dubizzle.com\/blog\/cars\/car-diagnostic-codes\/\" target=\"_blank\" rel=\"noreferrer noopener\">car diagnostic codes<\/a> from <strong>P0400 <\/strong>to <strong>P0408<\/strong> or <strong>P1403<\/strong> to <strong>P1406<\/strong>, that means the EGR system is malfunctioning. These codes indicate the exhaust gas recirculation flow problems, such as excessive or insufficient flow or solenoid problems.&nbsp;<\/p>\n\n\n\n<figure class=\"wp-block-image size-large\"><img loading=\"lazy\" decoding=\"async\" width=\"1024\" height=\"640\" src=\"https:\/\/d2hucwwplm5rxi.cloudfront.net\/wp-content\/uploads\/2023\/11\/14073722\/EGR-Valve-_-Body-4-7-11-23-1-1024x640.jpg\" alt=\"A new EGR system with wiring and connection\" class=\"wp-image-104294\" srcset=\"https:\/\/d2hucwwplm5rxi.cloudfront.net\/wp-content\/uploads\/2023\/11\/14073722\/EGR-Valve-_-Body-4-7-11-23-1-1024x640.jpg 1024w, https:\/\/d2hucwwplm5rxi.cloudfront.net\/wp-content\/uploads\/2023\/11\/14073722\/EGR-Valve-_-Body-4-7-11-23-1-300x188.jpg 300w, https:\/\/d2hucwwplm5rxi.cloudfront.net\/wp-content\/uploads\/2023\/11\/14073722\/EGR-Valve-_-Body-4-7-11-23-1-768x480.jpg 768w, https:\/\/d2hucwwplm5rxi.cloudfront.net\/wp-content\/uploads\/2023\/11\/14073722\/EGR-Valve-_-Body-4-7-11-23-1-640x400.jpg 640w, https:\/\/d2hucwwplm5rxi.cloudfront.net\/wp-content\/uploads\/2023\/11\/14073722\/EGR-Valve-_-Body-4-7-11-23-1-421x263.jpg 421w, https:\/\/d2hucwwplm5rxi.cloudfront.net\/wp-content\/uploads\/2023\/11\/14073722\/EGR-Valve-_-Body-4-7-11-23-1-558x349.jpg 558w, https:\/\/d2hucwwplm5rxi.cloudfront.net\/wp-content\/uploads\/2023\/11\/14073722\/EGR-Valve-_-Body-4-7-11-23-1-363x227.jpg 363w, https:\/\/d2hucwwplm5rxi.cloudfront.net\/wp-content\/uploads\/2023\/11\/14073722\/EGR-Valve-_-Body-4-7-11-23-1-250x156.jpg 250w, https:\/\/d2hucwwplm5rxi.cloudfront.net\/wp-content\/uploads\/2023\/11\/14073722\/EGR-Valve-_-Body-4-7-11-23-1-368x230.jpg 368w, https:\/\/d2hucwwplm5rxi.cloudfront.net\/wp-content\/uploads\/2023\/11\/14073722\/EGR-Valve-_-Body-4-7-11-23-1-774x484.jpg 774w, https:\/\/d2hucwwplm5rxi.cloudfront.net\/wp-content\/uploads\/2023\/11\/14073722\/EGR-Valve-_-Body-4-7-11-23-1-672x420.jpg 672w, https:\/\/d2hucwwplm5rxi.cloudfront.net\/wp-content\/uploads\/2023\/11\/14073722\/EGR-Valve-_-Body-4-7-11-23-1-437x273.jpg 437w, https:\/\/d2hucwwplm5rxi.cloudfront.net\/wp-content\/uploads\/2023\/11\/14073722\/EGR-Valve-_-Body-4-7-11-23-1-301x188.jpg 301w, https:\/\/d2hucwwplm5rxi.cloudfront.net\/wp-content\/uploads\/2023\/11\/14073722\/EGR-Valve-_-Body-4-7-11-23-1-240x150.jpg 240w, https:\/\/d2hucwwplm5rxi.cloudfront.net\/wp-content\/uploads\/2023\/11\/14073722\/EGR-Valve-_-Body-4-7-11-23-1-771x482.jpg 771w, https:\/\/d2hucwwplm5rxi.cloudfront.net\/wp-content\/uploads\/2023\/11\/14073722\/EGR-Valve-_-Body-4-7-11-23-1-669x418.jpg 669w, https:\/\/d2hucwwplm5rxi.cloudfront.net\/wp-content\/uploads\/2023\/11\/14073722\/EGR-Valve-_-Body-4-7-11-23-1-435x272.jpg 435w\" sizes=\"auto, (max-width: 1024px) 100vw, 1024px\" \/><figcaption>You must replace the EGR valves to reduce the emissions from the car<\/figcaption><\/figure>\n\n\n\n<h3 class=\"wp-block-heading\" id=\"h-steps-to-replace-the-egr-valves\">Steps to Replace the EGR Valves<\/h3>\n\n\n\n<p>After checking the codes from the <a href=\"https:\/\/www.dubizzle.com\/blog\/cars\/obd-car-scanner\/\" target=\"_blank\" rel=\"noreferrer noopener\">OBD scanner<\/a>, you can replace the failed EGR valves. Here are steps to replace it:<\/p>\n\n\n\n<ul class=\"wp-block-list\"><li>Remove the engine cover and remove the electric connections and cable on the valve<\/li><li>Inspect the EGR mounting surface since a failed system is a cause of carbon buildup or corrosion<\/li><li>Clean the mounting surface and supply port of the valve<\/li><li>Take a new EGR valve with the bolt holes and gasket<\/li><li>Fix the valve and fasten the screws according to the manufacturer\u2019s recommendations<\/li><li>Connect the electric cables and connections<\/li><li>Use a car diagnostic scan tool to recalibrate the system and <a href=\"https:\/\/www.dubizzle.com\/blog\/cars\/reset-check-engine-light\/\" target=\"_blank\" rel=\"noreferrer noopener\">reset the check engine light<\/a>.<\/li><\/ul>\n\n\n\n<p>You must recalibrate the system for accurate opening and closing of the valve to achieve better vehicle performance.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\" id=\"h-faqs\">FAQs<\/h2>\n\n\n\n<h3 class=\"wp-block-heading\" id=\"h-what-happens-when-the-egr-valve-goes-bad\">What Happens When the EGR Valve Goes Bad?<\/h3>\n\n\n\n<p>You can detect multiple symptoms of a failed EGR valve. For instance, poor engine performance, different car smoke, knocking sound, and higher engine temperature are due to the bad EGR valve. Moreover, a failed exhaust gas recirculation valve can be a <a href=\"https:\/\/www.dubizzle.com\/blog\/cars\/car-temperature-gauge-fluctuation\/\" target=\"_blank\" rel=\"noreferrer noopener\">reason behind car temperature gauge fluctuations<\/a>.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\" id=\"h-can-egr-be-cleaned\">CAN EGR be Cleaned?<\/h3>\n\n\n\n<p>Yes. You can follow the <a href=\"https:\/\/www.dubizzle.com\/blog\/cars\/clean-egr-valve\/\" target=\"_blank\" rel=\"noreferrer noopener\">steps to clean the EGR valve<\/a>. It is necessary to clean the EGR valve after the car achieves the <strong>50,000<\/strong> mileage mark.&nbsp;<\/p>\n\n\n\n<p>These were all the details about the EGR valve. You must ensure that the EGR valve is functioning properly when you <a href=\"https:\/\/uae.dubizzle.com\/motors\/used-cars\/\" target=\"_blank\" rel=\"noreferrer noopener\">buy a used car in the UAE<\/a>. Besides, it can <a href=\"https:\/\/www.dubizzle.com\/blog\/cars\/car-starts-for-second-then-dies\/\" target=\"_blank\" rel=\"noreferrer noopener\">cause the car to start for a second and then die<\/a> due to the uneven air-fuel ratio.<\/p>\n\n\n\n<p>Keep reading the <a href=\"https:\/\/www.dubizzle.com\/blog\/cars\/\" target=\"_blank\" rel=\"noreferrer noopener\">dubizzle autos blog<\/a> to learn more details about the car\u2019s essential components.<\/p>\n","protected":false},"excerpt":{"rendered":"<p>Learn about the EGR valve which reduces the nitrogen oxide emissions from the vehicle. <\/p>\n","protected":false},"author":26,"featured_media":104287,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[11],"tags":[],"dubizzle-taxonomy-car-year":[],"dubizzle-taxonomy-body-type":[],"dubizzle-taxonomy-car-doors":[],"dubizzle-taxonomy-car-cylinders":[],"dubizzle-taxonomy-car-extras":[],"dubizzle-taxonomy-car-color":[],"dubizzle-taxonomy-car-fuel-type":[],"class_list":{"0":"post-104282","1":"post","2":"type-post","3":"status-publish","4":"format-standard","5":"has-post-thumbnail","7":"category-parts-repairs"},"yoast_head":"<!-- This site is optimized with the Yoast SEO Premium plugin v26.0 (Yoast SEO v26.0) - https:\/\/yoast.com\/wordpress\/plugins\/seo\/ -->\n<title>All About EGR Valve: Working, Fixes &amp; More | dubizzle<\/title>\n<meta name=\"description\" content=\"An EGR valve recirculate the exhaust gases to increase engine efficiency and reduce NOx emissions. 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