What are the symptoms of a sticking EGR valve?
What are the symptoms of a failing EGR valve?
Where is the EGR valve located on a 2003 Buick LeSabre?
The EGR valve is located in the engine compartment (underneath the hood). via
How do you clean the EGR valve on a Buick LeSabre?
Spray cleaner on the valve mount and clean the valve mount of any dirt and debris. For stubborn carbon buildup, allow the carburetor cleaner to sit for a few seconds before wiping it away. Reinstall the newly cleaned EGR valve onto the valve mount. Replace each bolt and tighten with the socket wrench. via
Can you clean an EGR valve?
To clean the valve, wear an acid-resistant pair of gloves. Put on safety glasses, too, as the carbon deposits could become airborne in the process. Spray the EGR valve cleaner onto the carbon deposits. Remove the carbon buildup with the use of a pipe cleaning brush and dull scraper. via
What are the symptoms of a bad EGR temperature sensor?
Common signs include engine ping or knock, the Check Engine Light coming on, and failing an emissions test. via