Ford Expedition 1999–2000 — technical service bulletin
Bulletin 8021 · NHTSA communication 612686 · issued Jan 1, 2000
Technical service bulletin
communication type
Engine and Engine Cooling
component
1999–2000
model years
8
vehicle entries
Official summary
Some vehicles may exhibit a crackling/popping noise from the exhaust, vehicles built between 11/1/97 and 12/8/99. *mjs
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.