Join Date: Jun 2008
Location: Brampton, Ontario, Canada
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What NYC F-350 says is correct. Ford released a calibration update in late 2009 to turn the yellow wrench light on and de-rate power output when EOT exceeds ECT by more than 15*F (setting a P012F code), when turbo overboost is detected under any condition (setting a P0234 code), and when FICM voltages decrease to a level that is not satisfactory. However, 2003/2004 model year trucks were excluded from this update for reasons beyond my ability to fathom. So you 2005 to 2007 truck owners can rest easy if you guys have the latest and greatest calibration level installed in your trucks, and you are not seeing the wrench light coming on. Because this means all those important parameters are remaining in check.
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Ford Diesel/Senior/Master Tech who placed 2nd overall in Ontario on the Fix-It-Right-First-Visit score for 2010
....who works at a dealership that now employs SOME half decent looking female employees since they overhauled most of the administrative staff
....but STILL loves hot women with big boobies
....and STILL hates working on E-Series with 6.0L