Ford Explorer 1999–2002 — technical service bulletin
Bulletin 15470 · NHTSA communication 630576 · issued Dec 1, 2001
Technical service bulletin
communication type
Engine and Engine Cooling
component
1999–2002
model years
10
vehicle entries
Official summary
Concerns with spark knock noise or chain rattle noise between 2000-3000 rpm, during cold engine operation only. *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.