How To Check EGR Valve

The Exhaust Gas Recirculation (EGR) valve is a vacuum-controlled valve that allows a specific amount of your exhaust back into the intake manifold where it mixes with intake air to cool the combustion process. The exhaust your EGR valve recirculates also prevents the formation of nitrogen-related gases. 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.

Remember, if you have any questions or if you're unsure of anything, feel free to contact the Parts Pros at your local PartSource. They're always ready to help, no matter what the job is.

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Every vehicle is different, so when it comes to maintenance and repairs, always follow the vehicle's owner's manual. Don't work with a Philips when it calls for flat. Substituting tools can compromise your safety or your vehicle's performance.

Safety should be your number one priority, so don't smoke, drink alcoholic beverages, or wear a necktie. And watch out for hot objects, sharp instruments, hazardous materials and other potential safety hazards in and around your workspace.

And finally, when the fun turns to frustration or if the job requires specialized knowledge beyond your abilities, seek the assistance of a Parts Pro, professional mechanic or installer. The last thing we want is someone getting hurt.

It is important that you have a manual to locate the EGR as they are not always in the same place. At PartSource we have a large selection of repair manuals. You can even use our Shop Key program and ask a Parts Pro to help you locate your valve.

When the EGR valve goes bad, it probably needs to be replaced. However, in some vehicles over ten years old, you may get away with just cleaning the valve with a mild solvent then replacing the gasket. Check with your manual.

IMPORTANT: Read your manual thoroughly before starting, as there maybe numerous lines and pipes that also need to be removed prior to working on your EGR valve.