Ford F-150 1997–1998 — technical service bulletin
Bulletin 99144 · NHTSA communication 608420 · issued Jul 12, 1999
Technical service bulletin
communication type
Equipment
component
1997–1998
model years
2
vehicle entries
Official summary
Vehicles may experience a moaning noise heard at approximately 1100 rpm with the a/c compressor engaged. *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.