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Sorry, It's a '07 with about 96k on the clock. My only mods thus far have been a coolant filter and the blue spring mod. I have an oil catch ready to install, but I just haven't done it yet. I try to minimize my idling times, but I typically spend my morning commute in slow moving traffic. I usually add 10oz of silver diesel kleen every other tank during the summer months.Yea P0402 is "excessive EGR flow at idle." Is there a procedure to reteach the ecm the ranges/position of the EGR valve? Maybe it thinks the valve is open when it isn't?
I kept the old valve, and after looking at it again, there is nothing blocking it open or keeping the disks from seating on their seats.
Last edited by Jason_S; 09-01-2012 at 07:25 PM.