Ford F-250 SD 2011–2014 — technical service bulletin
Bulletin ASI-44122 · NHTSA communication 10053243 · issued Aug 1, 2013
Technical service bulletin
communication type
Engine and Engine Cooling
component
2011–2014
model years
16
vehicle entries
Official summary
Ford: due to design differences of turbocharger and air intake systems, some diesel trucks may experience, when accelerating from a stop, a characteristic turbo lag. Model 2011-2014 f250, f350, f450, f550. *pe
Vehicles covered
What a TSB means. Technical service bulletins are repair guidance manufacturers send to dealers — they are not recalls, and repairs are not automatically free (warranty extensions are an exception worth checking). The full document is available via NHTSA’s vehicle lookup.