Ford Expedition 1997–1998 — technical service bulletin
Bulletin 5206 · NHTSA communication 615338 · issued Dec 1, 1998
Technical service bulletin
communication type
Equipment
component
1997–1998
model years
4
vehicle entries
Official summary
For certain vehicles the octane shorting bar located on the passenger side of engine compartment near the bulkhead is not intended to be functional in reducing detonation / spark knock. *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.