Mazda 626 1999 — technical service bulletin
Bulletin 00300 · NHTSA communication 621308 · issued Mar 9, 2000
Technical service bulletin
communication type
Engine and Engine Cooling
component
1999
model years
1
vehicle entries
Official summary
Some vehicles may exhibit an engine knock noise that can be heard outside the vehicle at approximately 800 - 1400 rpm after the engine reaches operating temperature. *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.