Nissan 370Z Forum
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Nissan 370Z Forum (http://www.the370z.com/)
-   Nissan 370Z General Discussions (http://www.the370z.com/nissan-370z-general-discussions/)
-   -   High Pitch Noise Hurting My Ears (http://www.the370z.com/nissan-370z-general-discussions/10603-high-pitch-noise-hurting-my-ears.html)

Sarah T 10-12-2011 12:58 PM
I had the ECU replaced and it fixed the high pitched noise in the front, now it's happening again from the back of the car. I wish Nissan would be more proactive in fixing this problem. I miss too much work bringing it in and out of the dealership taking up my time fussing/proving over these things just to get it fixed. My 2009 370Z is already at 45k and my warrenty is going to run out soon.

Quote:
Originally Posted by LSUTurboTiger (Post 254386)
This started on my car at 8000 miles after 6 months of ownership, and it gets worse the longer it goes on.

Its not the fuel pump or the transmission, its the ECU. Apparently the G37 has the problem too and Nissan/Infiniity does not seem very motivated to fix the issue.

There have been several threads on the subject on this board, search "high pitch" and you will find them. heres one:

http://www.the370z.com/nissan-370z-g...nger-side.html

If you turn your head to the left to look out the mirror, you hear it in your right ear. The noise is easily heard over AM talk radio, but most FM will drown it out. However if you listen to AM or if you turn the radio off you will hear the noise for an hour or two after leaving the car.

I am taking my car to the dealer next week and demanding they fix it, if they don't I am going to a lemon law attorney. My main problem with it is 1) it shouldn't be happening and 2) its getting worse.

CarsRfun 10-12-2011 08:24 PM
Poor Sarah :( hope they fix it soon.

hdskull 10-12-2011 10:08 PM
How does this noise sound like? No wonder my right ear is developing a hearing problem.. hahaha

UNKNOWN_370 10-12-2011 11:12 PM
The only sound I tend to hear, but it doesn't bother me at all and is not high pitched enough to hurt my ears is this humm when I accelerate slowly. It sounds like KITT. Or like if I had a turbo. But I only hear it while crawling the car. I don't hear it in hard accelrations, stand stills or cruising above 15mph.but when I shut off the car. It humms as its turning off. Sounds cool to me. Lol

Sarah T 10-26-2011 12:36 PM
Well, the dealership can't hear it - won't fix it. Don't know what to do, feel like i'm going crazy, maybe they will figure it out in time but I'm trading it in before my warrenty goes out.

my heart is officially broken, i love driving the car, but I hear the noise and i don't care if the dealership thinks i'm crazy.

BrianMSmith 10-26-2011 05:18 PM
On a very smooth road going 30-40mph (not frequently) I can hear a faint high pitch sound from the rear, can't tell if it corellates with throttle - if it does, and it gets louder over time, then it's likley the rear diff. If not, then it can be the fuel pump. It can also be wind noise, do you notice it at certain speeds? Bearings tend to make a growling noise.

ImportConvert 10-26-2011 09:30 PM
I have ridden in one 370Z, and driven a few. I have no clue what you guys are talking about and I have heard plenty of wheel-bearings/diffs that are a bit "off". I heard nothing of the sort in any of the 370'z.

ImportConvert 10-26-2011 09:31 PM
Quote:
Originally Posted by BrianMSmith (Post 1378783)
On a very smooth road going 30-40mph (not frequently) I can hear a faint high pitch sound from the rear, can't tell if it corellates with throttle - if it does, and it gets louder over time, then it's likley the rear diff. If not, then it can be the fuel pump. It can also be wind noise, do you notice it at certain speeds? Bearings tend to make a growling noise.
People say this, but in my experience they make a "warbling" whine to a shrill whine that is load-dependent, modified by accel/decel and loading/unloading in corners.

TypeOne 10-27-2011 03:57 PM
I noticed a noise after I put my head unit in. I think it is some interference with the antenna or something. Can't really tell once the car is running.

kenchan 10-27-2011 04:17 PM
i know what sarah is saying. it's a very audible high pitch sound. like when you turn on a old CRT TV. the car i test drove first had it and i was joking about it to the sales guy. he said he couldn't hear it. it might be because he was sitting in the passenger seat and the noise is audible in certain areas in the car.

the car i bought did not have this sound when i test drove it...and to this day does not have it. i think there was a TSB out for this. do a search.

ChrisSlicks 10-27-2011 05:44 PM
Quote:
Originally Posted by Sarah T (Post 1378071)
Well, the dealership can't hear it - won't fix it. Don't know what to do, feel like i'm going crazy, maybe they will figure it out in time but I'm trading it in before my warrenty goes out.

my heart is officially broken, i love driving the car, but I hear the noise and i don't care if the dealership thinks i'm crazy.
Women are better at hearing high frequencies to start with, and the techs have lost most of their high frequency hearing from using air tools day in day out. Se if you can arrange for a younger women in the dealership to sit in the car and listen (you lose high frequency hearing with age as well).

forza370z 12-13-2011 10:49 PM
I can hear the exactly same noise you guys discribed. It sounds like I am oprating a jet or I have a turbocharger in my car!:tup: I own a g35 coupe and drove many g37x before, never heard this noise tho... I am going to bring my car to the Nissan dealership again. But before I walk into their door, is there any offical fix for that? Or haven't Nissan confirmed it's the ECU? Fuel pump? Diff? Or my ear problem???

If dealership can't fix it this time, I will have to install HKS Hi-Power catback to eliminate this problem. :icon17:

Vaughanabe13 12-14-2011 08:42 AM
Quote:
Originally Posted by ChrisSlicks (Post 1380821)
Women are better at hearing high frequencies to start with, and the techs have lost most of their high frequency hearing from using air tools day in day out. Se if you can arrange for a younger women in the dealership to sit in the car and listen (you lose high frequency hearing with age as well).
lol. Make sure to do it in the creepiest way possible. Ask the cute secretary to come sit on your lap and listen.

brucelidat 12-14-2011 12:38 PM
I haven't noticed any high pitched frequency at all

kenchan 12-14-2011 03:40 PM
it's only on certain cars. mine does not have it but the other car i test drove the same day had the high pitched CRT TV tone.


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