Volvo S80 2001 — technical service bulletin
Bulletin 4326 · NHTSA communication 629024 · issued Jan 24, 2002
Technical service bulletin
communication type
Engine and Engine Cooling
component
2001
model years
1
vehicle entries
Official summary
Some vehicles may exhibit oscillating rpm at cruising speeds with a steady throttle, described as a surge feeling while on the highway, or the tachometer needle may fluctuate slightly. *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.