high pitched noise (like mosqito sound) from engine
 

Anyone's Z making high pitch noise (like mosquito sound) when you accelerate? Its coming from engine.. My Z is 2012 and barely past 15,000 mile... will be taking it to dealer but wanted to know if anyone else had same problem.

I think it's the ECU whine

Thats what thought after research but noticed its different after watching video of a Z having ECU whine problem. This sound suddenly started so I dont think its normal though..

It could also be the diff or power steering pump. Lots of whining in the car. I just pretend its a supercharger.

If the whine is coming from the passenger footwell area, it's probably the ECM. If it's coming from the engine compartment, it could be a lot of things (injectors, PS pump, ...).

Allegedly, there is also a throttle body whine.

Sigh.... I just bought this Z 3 months ago and it's already causing problem.. 2012 Z just past 15,000 miles.. it was CPO....

****..

I never believe the CPO **** with the stealership!
Imagine they even made you pay extra for that!
Hopefully they will fix it!

Could be mosquitoes...

IIRC wasn't the ECU whine issue corrected for or during the 2010 model year?

OP, are you new to manual transmissions, or manual transmissions in sports cars? Could just be typical gear whine.

I have a 2010 and mine whines all the time....

oh, that's the turbo....nevermind:wtf2:

On a more serious note OP there are a lot of noises specific to the VQ platform going on under that hood. I would not automatically assume there is something seriously wrong with it. It is runs, acts normal and they don't find anything you might just be alright.

Funny when I bought mine I heard a whine after shutting engine down from the engine bay area. It only occured once so far.

Probably the fuel pump.

So many mosquitoes in FL that's all I hear outdoors....Live music and age prevent me from hearing that noise, haha.

Nope, i'm not new to manual transmission and my friends who drives manual as well thinks there is something wrong with this noise. They couldn't figure out what exactly is causing the noise

I understand VQ generates specific noises but this one suddenly appeared.. that's why i'm concerned about... and if you hear it, then you would definitely notice this noise isn't normal

Not to steal your thread, but I have a noise as RPM falls anyone know what it is? Have a listen here:

http://pinetreepistolclub.com/jims/Glow.wmv

Heat-shield?

Sounds like you have HFC's. I have them as well and it sounds the same. The hiss is indigenous to HFC's.

:iagree:

It's the biggest thing I miss about going to the turbo. That noise is fantastic!

Thank you gentlemen, I do indeed have FI HFCs on the car.

I have a 2010 and it whines all the time (electrical sounding). You can hear it when the stereo is off and when you turn the car off. I think it's mostly the fuel pump when car is off cause it's louder than at start up. I haven't had any issues and the car is pushing 34K. I've gotten use to it and don't notice it because of boost and my exhaust system! :tup:

I agree its really hard to notice anything with all that turbo whistle going on:driving:

I have a Nissan X-terra that has a 3.5 litre engine. I believe it's the same engine they put in the 350Z. At about 20k miles it started to whine as the engine RPM increased. You could actually hear it go up and down with the RPMs. One of my friends said it sounded like it was coming from the front of the engine. Turns out the timing chain guides were defective and had to be replaced. There was a TSB put out by NIssan, but car owners weren't informed. I was told it didn't affect enough owners. They reapired it under warranty.

Alright, I have now heard the whine noise in my cabin, it took me a while to separate it from my bad tinnitus!

Okay.. here is an update. I went to my Nissan dealership about 2 weeks ago and tech stated my manual transmission need to be replaced.. Part has been ordered yesterday and yes, it's being covered under warranty. It took 2 weeks to Nissan Warranty Dpet to approve lol. My technician had to fight back and forth with them.

The bad news is Nissan does not provide rental cars and my insurance won't provide rental cars cuz it's not caused from accident lol wtf.. I kinda need to fight this with my insurance compaby..

Thought the noise was from engine but it's actually from trasmission LMAO I must be deaf