In some cases with higher mileages, the Check Engine Light may come on due to insufficient Exhaust Gas Recirculation system (EGR) flow. For EGR flow concerns, the EGR valve is usually recommended for replacement and the intake manifold is removed to clean the EGR passages in the engine, which have clogged with carbon over time.
Check Engine Light Illumination for Insufficient Exhaust Gas Recirculation system (EGR) Flow on Ford E-350
Average mileage: (–)
Exhaust & Emissions affected: 5.8L V8
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