Ford Powerstroke 6.0 L – Buck/Jerk or Surge

DESCRIPTION

BUCK/JERK OR SURGE – VEHICLES BUILT BEFORE 8/22/2005

ISSUE

Some 2004-2006 E-Series/F-Super Duty and 2004-2005 Excursion vehicles built before 8/22/2005 and equipped with a 6.0L diesel engine may exhibit various light surging concerns upon light acceleration from stop to 50 MPH (80 Km/h) typically on cold start, 1800 to 2800 RPM in drive or neutral, or under high load typically pulling a trailer and/or going up a grade (prolonged light surge). The concern normally occurs right before a transmission upshift event, or if transmission is held in gear where engine speed is steady 1800 to 2800 RPM.

ACTION

This concern may be caused by Variable Geometry Turbo (VGT) control valve contamination. PC/ED Section 5, Pinpoint Test KA: turbocharger system performance diagnosis has been revised to better diagnose these types of concerns. To diagnose, follow the online 2006 model year PC/ED diagnostics, section 5, Pinpoint Test KA (see P0299 code page). If the revised PC/ED diagnostics lead to VGT replacement, remove and replace the turbo oil supply tube assembly along with the VGT.

PARTS INFORMATIO