Ford Crown Victoria 1997–1999 — technical service bulletin
Bulletin 9947 · NHTSA communication 604763 · issued Mar 8, 1999
Technical service bulletin
communication type
Engine and Engine Cooling
component
1997–1999
model years
9
vehicle entries
Official summary
Engine experiencing roughness at idle due to exhaust system resonance. *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.