Ford F-250 SD 2003 — technical service bulletin
Bulletin 0310 · NHTSA communication 10002171 · issued Apr 1, 2003
Technical service bulletin
communication type
Engine and Engine Cooling
component
2003
model years
4
vehicle entries
Official summary
Ramp-rate from base engine idle (625 rpm) to 1200 rpm target is higher than prior 7.3l diesel engine. This may be too rapid for smooth engagement of transmission-mounted pto serving high-inertia pto system start-ups, typical of direct-drive air compressor installations. *tt
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.