Ford Ranger 2004–2005 — technical service bulletin
Bulletin 0559 · NHTSA communication 10014692 · issued Mar 21, 2005
Technical service bulletin
communication type
Electrical System
component
2004–2005
model years
2
vehicle entries
Official summary
Spark knock during acceleration - 4.0l engine. *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.