"Â P0404 Exhaust Gas Recirculation (EGR) Open Position Performance. It sounds like the EGR is stuck open. Remove it and check it for carbon build up in both it and the intake where it mounts. Clean it and the intake if needed and make sure the valve is fully closing.
Let me know what you find.
Joe
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Sunday, October 4th, 2009 AT 12:14 AM