Ford Mustang 1998 — technical service bulletin
Bulletin 983150 · NHTSA communication 607415 · issued Feb 19, 1998
Technical service bulletin
communication type
Engine and Engine Cooling
component
1998
model years
1
vehicle entries
Official summary
Some vehicles with 3.8l and 4.6l engines may have airflow coming out of the defrost nozzles in any mode position. *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.