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EGR valve and/or EGR controller 850

posted by  Icelandic on  Mon Sep 27 08:07 CST 2010
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last visit: Tue May 8 06:35 CST 2012
[RELATED]

Yes it sounds right. With power off the controller should not let vacumm thru.
Only when the ECU tells it to do so (under load at certain rpms). Perhaps when you took egr out for clean up, you mixed up the vacum hoses. I hope you have solved the problem.






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