Ford F-150 1998–2002 — technical service bulletin
Bulletin 15817 · NHTSA communication 637550 · issued Apr 1, 2002
Technical service bulletin
communication type
Engine and Engine Cooling
component
1998–2002
model years
5
vehicle entries
Official summary
Some vehicles equipped with bi-fuel (cng/lpg) alternate fuel engines may exhibit hard / no start, runs rough or misses after starting, and or hesitation on acceleration when operated in the bi-fuel mode. *tt
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.