The Exhaust Gas Recirculation (EGR) valve recirculates small metered amounts of exhaust back into your engine’s intake system. Ultimately this allows for decreased fuel consumption, increased efficiency and lower nitrogen oxide (NOx) emissions. An old or damaged EGR valve can get stuck, causing NOx gases to build up, leading to rough idle, poor acceleration and even a failed emissions test. The average EGR valve has a lifespan of about ten years, so if your vehicle is a little older and showing signs of sluggishness, stalling, higher emissions, etc., it may be time to take a look.
Here’s What You’ll Need:
- Repair Manual
- Basic Hand Tools
- Rags and Hand Cleaner
Words of Wisdom From The King:
Every vehicle is different. Always follow the owner’s manual when it comes to maintenance and repairs.
Safety should be your number one priority. Don’t smoke, drink alcoholic beverages, or wear a necktie while working on the car. Watch out for hot objects, sharp instruments, hazardous materials and other potential safety hazards in and around your workspace.
Don’t work with a Philips when the job calls for a flat. Substituting tools can compromise your safety or your vehicle’s performance.
Finally, when the fun turns to frustration, or if the job requires specialized knowledge beyond your capabilities, please do not attempt it yourself. Talk to a professional mechanic or installer.
IMPORTANT: Read your manual thoroughly before starting, as there may be numerous lines and pipes that also need to be removed prior to working on your EGR valve.
Steps For Checking an EGR Valve:
- Place your vehicle in park and set the emergency brake.
- Start the vehicle and allow it to warm up to operating temperature.
- Locate the EGR valve using your owner’s manual.
- Next, find the EGR plunger mechanism. The plunger meters the exhaust gas recirculation by opening and closing.
- Manually rev the engine and check for plunger operation. A plunger stuck open or closed indicates EGR malfunction.
- Replace EGR as necessary.