Ford Mustang 2016–2017 — technical service bulletin
Bulletin SSM 46173 · NHTSA communication 10095975 · issued Nov 2, 2016
Technical service bulletin
communication type
Engine
component
2016–2017
model years
2
vehicle entries
Official summary
Some 2016-2017 mustang gt350 equipped with the 5.2l engine may exhibit a rattle or rapping type sound during cold operation at light loads and speeds from idle - 3000 rpm. The noise will be most noticeable during light acceleration in the 1500-3000 rpm range and may also be noticeable in the 800-1200 rpm range with neutral throttle blips. This sound is caused by the piston motion in the cylinder bore. This is an inherent characteristic of the forged aluminum pistons utilized in this high performance engine. Once the engine reaches operating temperature the noise will diminish, although it may
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.