Report: EGR Valve Stuck Open Due to Carbon Stuck in Valve
Chevrolet Astro Problem
4.3L V6 multi-port FI only
The exhaust gas recirculation valve (EGR) may stick open causing a rough idle and the Check Engine Light to illuminate. Our technicians tell us that a piece of carbon may become stuck in the valve causing this problem. Cleaning the valve will usually correct this condition, in some rare cases the valve will need to be replaced.
Visitor, 1992 Chevrolet Astro, 160,000 mi
replaced egr valve, no idle