Ford F-150 1997–1999 — technical service bulletin
Bulletin 99188 · NHTSA communication 6090068 · issued Sep 6, 1999
Technical service bulletin
communication type
Engine and Engine Cooling
component
1997–1999
model years
3
vehicle entries
Official summary
Vehicles with 4.2l engine (canadian) may backfire on acceleration at all ambient temperature. *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.