Ford Five Hundred 2005–2006 — technical service bulletin
Bulletin 05175 · NHTSA communication 10018066 · issued Oct 7, 2005
Technical service bulletin
communication type
Engine and Engine Cooling
component
2005–2006
model years
6
vehicle entries
Official summary
Engine rpm fluctuation at highway cruising speeds - vehicles built prior to 8/2/2005. *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.