Whine/Noise/High Pitch Arg!

alexanderb

this high pitch sound is indeed very irritating! Does everyone have this or just a select few?

Also, if it is the ECU, would changing the ECU to the Mines ECU fix the problem?

bradz

I heard it, but it doesn't bother me at all. Mine is not that loud, you can't hear if you are not going to pay attention to it.

jtown82

i think you should get crap for money. you sound like some homeless bumb that will try to sue someone for looking at them the wrong way. ... your "hardships" lol. thats about the funniest thing ive read on the forums. your case wont go anywhere because you dont have a case. if nissan doesnt have a fix for it they dont have a fix for it. and your most liekly going to have a lemon looking face from pouting than anything else. and your lawyer should realize also yall have no basis for getting money from them or filing for lemon law. now if Nissan had said.. yes we know there is a problem.. and "we dont care" or "we are going to live it as is". then yes you would have a leg to stand on.

Hugoneus

He already got a refund from Nissan for his car and he mentioned that he will never buy a Nissan again.

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jtown82

wow im surprised at that. nissan lawyers must have been having a vacation lol.

dad

If that is a hardship for you, then you've had one easy life!

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Phimosis

Quoted from multiple:

"Replacing the ECU does not stop the noise. I am not a techie so excuse my lack of knowledge but the tech tried to explain it to me that if there was a mishap in the wiring into the ECU it could cause the whine, almost like it was a power surge."

"Are you saying, that they are saying, that it is the design of the wiring system causing the ECU to emit the noise?"

"Also according to the paperwork I got from Nissan that I forwarded to my attorney he said Nissan clearly stats there is a problem and that they are aware of it but they do not know how to fix it. "

"This is something interesting I've noticed about the high-pitched noise.... It starts out pretty much silent if your car has sat overnight and is cold. You'll notice, once you pull out of your driveway, it "rings" (like after you've been at a loud concert ear-ringing) when you press the accelerator lightly... Only at a certain position. Once the car warms up after about 2 minutes, it does it constantly. Mine has been taken to a dealer and we're waiting for the next step. "
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Putting all the above info together, I have an idea:

Solution: Embed the wiring block in rubber and put a rubber block around the wiring every foot or so. Also, may need to build a rubber case around ECU itself.

Rationale: Aternating current in a wire will 1) emit radio frequency and 2) set up it's own magnetic field. This is how electromagnets work on cranes in wrecking yards that pick up the junk cars. Also, ignore the part about emitting radio waves. I'm not saying it has anything to do with your car radio. From a physics standpoint, they will emit EMF (electromagnetic frequency). If each wire in the block is turned into an electromagnet with it's + and - poles alternating many cycles per second based in inputs and outputs from various sensors in the car, it would cause the wires to vibrate back and forth like guitar strings, making multiple, faint, tones in the audible range. Building a rubber block around the moving parts would significantly dampen the sound they emit.

supporting evidence: 1) MRI scanners have the same phenominon. If you've been in one, the "pop, pop, pop" or the "nnng, nnng, nnng" sounds are from wires in the send coils. They run about 5kw energy through a set of coils of wire that serve as an antenna to make RF. The RF is around 94mhz, which is too high to hear as a tone, but the current is pulsed on and off, so you repeately hear the wires move, hence the 'popping'. To keep the noise down, they embed the coils in a plastic table that you lie on. Between your weight and the damping characteristics of the plastic table, it makes the noise livable. 2) The noise gets worse as the car heats up. When a metal heats, its eletrical impedance rises. If sensors and send units rely on electrical impulses, the amplitude (voltage) of those signals hase to increase to compensate for the higher resistance in the wire. The higher voltage leads to a stronger magnetic field, which would lead to more wire movement and more noise.

Anyways, it's just a theory. I'm too busy with my work life to test it, so I'll just have to keep dealing wath the constant annoyance. I wrote to Nissan. Let's see if they reply...

efuseakay

This is an issue with the '09 Infiniti Gs as well... the "fix" is to replace the ECU... it's worked for most, but not all. I would guess improper installation as the culprit for those who had the noise return. The G thread is here:

*FIX for high-pitch frequency noise* - MyG37

'10s do not have the problem.

Csquared

I took my car to Nissan to get it checked out here in hk. I sent them all the links to the threads, I took a tech out with me and he could hear it. I told them to change the ECM but they said they have to gather enough evidence before they can get a new one for me.

So at the moment they ripped out my Bose system to make sure it aint the stereo. I told them i want my car back cause I need it to go to and from work. The service manager said" I'll try to give it back, but We really want to fix this for you and it would be wrong to give you your car back with out at least figuring out what is causing the noise"

So I'll keep you posted.

flashburn

Quick question: Where exactly is the ECU located in our car?

efuseakay

I'd guess it's somewhere under/near the glove box.

Zsteve

I think you need to understand how things work, when enough pressure is applied things gets done. Do you think all these rich and political people get things done because its the right thing to do? No they have thier people apply pressure to get things done. If you dont pressure people or companies into fixing things that are not right then they wont get fixed. You think Toyota would ever have fixed things if no one did or said anything? Press and lawyers can do wonders. I + repped the dude for getting the lawyer and getting his resolution, he was pro active and accomplished something. If others did the same then Nissan might be more ective in fixing the problem. I have yet to hear the noise but Im a little hard of hearing in certain freqs. The real world is a b!tch and you have to know how to play its game, right or wrong.

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nuTinmuch

there is an epidemic of necroing in here

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Zsteve

damn necro mongrels

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Juruki

Damn, are most of the 370Z's experiencing this problem?
I was really set on getting one