Hi, I tried searching engine noise and whines but only could find that Diesel thread about similar whine. Listened the videos and it's a bit different and louder in the diesel videos. I noticed Ichiban has Tourer with the same engine, maybe he can tell if he has the same noise? If this is a normal sound? Here's a video sample of the whine: About 180 000 kilometers (~112 000 miles) on it. Honda Accord 2006 Type-S K24A3 i-VTEC. The whine is constant, always on regardless of engine temperature, the whine follows RPM. You can hear it at all engine RPMs, maybe louder above 2000 RPM. In the video the car is on neutral (it's 6MT.) Service booklet did not mention anything about chain or oil pump being replaced. I heard a similar (not exactly the same) but louder whining noise on that diesel accord whine thread, they reported it got there, or got louder, when they changed the (timing or oil pump?) chain (and oil pump sprocket.) I took the serpentine belt off and the whine was still there so it's not power steering pump (although this makes a very slight noise on its own), not alternator, not serpentine belt tensioner, not water pump, not crank shaft serpentine belt pulley, not A/C compressor. I'm suspecting oil pump (balance shaft maybe?) being the culprit here. I just want to be sure before I order the part and have it installed, it probably isn't very easy to install (costs a lot of money.) Here's a similar sound but much louder on a Mitsubishi, here culprit was oil pump balance shaft separating from sprocket: Local tech (they're not Honda in my city but neighboring city they are) said he didn't hear anything out of the ordinary on the engine running sound, and marked it as "normal engine sound." Was a bit appalled on how they cannot hear it... unless this whine is normal. I've tried listening to Accord '06-'07 Type-S review videos where they show the engine sound and I don't hear this whine in them. BTW, don't mind the VSA icon there, I have a faulty left rear wheel motion sensor and it'll be replaced within two weeks. Hoping that's what causes the icon to go on. OBD2 code reader also said "84-01 sensor logic failure."