Check Engine Light Illumination for Insufficient Exhaust Gas Recirculation system (EGR) Flow on Ford E-150

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.

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Average mileage: 132,750 (67,000–187,000)
Exhaust & Emissions affected: 5.0L V8, 5.8L V8
7 model years affected: 1990, 1991, 1992, 1993, more1994, 1995, 1996
19 people reported this problem
2 people shared problem details
we change the EGR valve and sensor and the downdraft hose was change but the engine light still comes on Code Reader says that is the downdraft holes that need to be replaced p1406
Car ran with mis fire before tune up. The mis fire got worse with new plugs wires and distributer cap
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