Anyone know what the high pitched whine in the sound clip is (6MT)?

[dogunbound]

Sound clip of high pitched whine

The whine only happens on cold start and goes away once the car has warmed up a bit. It's been happening since new, so I've just ignored it. The sound goes away if you depress the clutch. It sounds kinda like straight cut gears . Happens in neutral or when driving. The clip you heard was driving in first through a garage.

I'm not worried as the transmission feels good, just more or less curious.

I've only had one instance where I had to manage the noise. I started my car and my neighbor came over for a chat. I couldn't hear a lick of what he was saying because of how loud it was XD.

Maybe something to do with the input shaft bearing at cold temperatures vibrating at a specific resonance triggering this sound? Idk tbh.

 

[Zenogias]

Wow was that clip unedited? It sounded like it was recorded underwater in a haunted lake. Definitely have never heard a car make sounds like that in my entire life, I'd have nissan take a look at it.

 

[CasualSpec]

i have to agree with zenogias. its low quality. i cant tell. my 6mt does not have a whine on cold start.

maybe post a youtube short?

 

[dogunbound]

Wow was that clip unedited? It sounded like it was recorded underwater in a haunted lake. Definitely have never heard a car make sounds like that in my entire life, I'd have nissan take a look at it.

Crappy phone recording XD. I did my best editing the clip in audacity by selecting noisy clips and applying their noise reduction algorithm.

 

[Koryak]

I heard a very light whine after start-up only once with my 6MT. Car hadn't been started for 2 weeks and the sound went away after about a minute. Didn't notice if the clutch had any effect as I let the engine idle in neutral.