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yes, either clear the codes or disconnect your batteries. The EGR valve has a min stop voltage the pcm has to learn so it knows when it's closed. Technically speaking you should reset the keep alive memory but this isn't possible without a higher end scan tool.
Ford Senior Master Tech
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2015 F-250 XLT 6.7L
2006 F-250 6.0L SOLD
Last edited by sinner6.0L; 03-04-2012 at 01:05 PM.