Ford F Series 1999 — technical service bulletin
Bulletin 4711 · NHTSA communication 615250 · issued Aug 1, 1998
Technical service bulletin
communication type
Engine and Engine Cooling
component
1999
model years
1
vehicle entries
Official summary
Some super duty trucks equipped with the 7.3l dit engine may exhibit a lack of power and / or a whistle noise coming from the engine compartment. *tt
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.