Acura CL 1999–2002 — technical service bulletin
Bulletin 01062001 · NHTSA communication 623640 · issued Jun 1, 2001
Technical service bulletin
communication type
Engine and Engine Cooling
component
1999–2002
model years
6
vehicle entries
Official summary
The front and rear motor mounts make a thump noise when the engine is first started after sitting for several hours. This noise is a normal characteristic. Replacing motor monts may eliminate this noise temporarily, but the noise will recur after a few thousand miles. *yd
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.