TSX L4-2.4L (2005)
Balance Shaft: Technical Service Bulletins
Engine - Buzzing and Rattling In Park & Neutral
Engine Buzzes or Rattles in Park or Neutral
Got a '04-05 TSX with an engine that buzzes or rattles when you rev it with the shift lever in Park or Neutral? You might just be hearing the normal
harmonic resonance from the oil pump and the balancer shaft assembly.
This harmonic resonance is most noticeable between 2,000 and 3,000 rpm and it's just a normal characteristic of the vehicle. It's not something you can
fix by replacing engine parts.