High-Pitched Frequency Update

dudafunk · 01-06-2010, 03:54 PM

BTW anyone figure out how to find out if your serial number ends with the A or the B?
From my manuals or from the dealer?

G Fo12ce · 01-06-2010, 06:32 PM

I hear the noise too. It's very subtle to me and if I were to guess off the top of my head it sounds like fuel pump whine to me.

I'm not saying it's not the ECU like you guys are saying because maybe it could be a bad fan bearing in the ECU or something wierd like that. But again to me it sounds like track cars I've heard with high flow or external fuel pumps.

bumblez · 01-06-2010, 11:22 PM

I think the only way you can find out your ecu is type A or B, is go to the dealer to take the ecu out to check.

Silver37 · 01-07-2010, 05:30 AM

Quote:

Originally Posted by bumblez

Finally, I went to Nissan dealership for replacing ECU to get fixed high pitch noise today. After the tech replaced ECU, I did test drive and that noise was still there.

WTF!!!? I've been waitng for almost 5 hours at the dealer today!!
So the general maneger called to the nissan department rep. And
They said they found the ECU which has serial number end with B, makes high pitch noise. Old ECU should be change to New one which has serial number end with A. My service maneger checked ECU's serial number on my car and it's end with B. That's why my car still make noise even though they changed to new ECU. My stupid service maneger didn't check it before he placed order.

Anyways...I hope it's true this time.
Dealer just gave me a rent car(sentra) and I have to wait another 1weeks to get it fixed. I will update if its fixed.

Bummer! Can you see if you can get hold of the right part number and any service bulletin that goes with it? This noise is killing me!

Zsteve · 01-07-2010, 07:43 AM

I havent heard it in mine but Im also a little on the bad side for hearing in certain freqs, like 6k etc but my wife hasnt said anything about a noise ye teither so hopefully I dont have it. So are they putting the ECUs with the "B" in models still being sold today or did they stop the "B" at a certain time?

jpit · 01-07-2010, 09:49 AM

My car was manufactured in 10/08 and has the "A" ecu. Uprev's software reads the number as it needs to know which ecu is being tuned. Don't have the high frequency noise (yet).

Zvengeance · 01-15-2010, 06:50 PM

My 370z Nismo, which I bought 2 months ago started getting the noise. Right now I have 1100 miles on it and it just got louder.

I'm afraid to take it to the dealership and not have it happen. I have very bad luck when it comes to taking a car to the dealership and not being able to show them the problem.

Does anyone have any suggestions on what I need to do?

Is at a point that now all I focus on is that dam noise and it started giving me head aches.

Zvengeance · 01-15-2010, 06:52 PM

Quote:

Originally Posted by bumblez

Finally, I went to Nissan dealership for replacing ECU to get fixed high pitch noise today. After the tech replaced ECU, I did test drive and that noise was still there.

WTF!!!? I've been waitng for almost 5 hours at the dealer today!!
So the general maneger called to the nissan department rep. And
They said they found the ECU which has serial number end with B, makes high pitch noise. Old ECU should be change to New one which has serial number end with A. My service maneger checked ECU's serial number on my car and it's end with B. That's why my car still make noise even though they changed to new ECU. My stupid service maneger didn't check it before he placed order.

Anyways...I hope it's true this time.
Dealer just gave me a rent car(sentra) and I have to wait another 1weeks to get it fixed. I will update if its fixed.

P.s/ if anyone need contact number for department rep guy, Pm me

When you get it fixed can you please post some sort of official paper by the dealership showing what they did?

Viera · 01-21-2010, 10:25 AM

Bump. Still waiting!

Tyrell Tyson · 01-21-2010, 11:16 AM

Yoyo

Bumblez posted in my thread about the same thing, i pmd him few days ago. Here was his post

Bumblez-
"Ok... here is update for my highpitch noise.
My dealer just change ECU which is ending with A..
That noise has been reduced a little bit but still can hear.
General service maneger was not there when I picked up my car.
I think he might say try another ECU.
Anyways... we gonna talk about this on monday.
I will ask them to change to another Z.
If they say NO?? I will hire an attorney."

SUCKS BALLS huh

Does anyone out there know a fix for this problem that effects alot of Z owners ?? can anyone solve it, 1 million dollars to the man that does

- Ty

NXTAZEE · 01-21-2010, 11:36 AM

Once in a while I hear a very slight high pitch noise, but it comes from the rear of the car. This I would think is the fuel pump. I hear this in a lot of cars, mainly from the outside of the car though. This is probably because most cars have a lot more sound proofing than the Z.

jloomis13 · 05-19-2010, 10:21 AM

Any news from anyone on this issue? I just hit 3100 miles on my '09 and have had this issue for about a month. Took it to the local dealer yesterday and only one other person could here it, and they "can't replicate the sound" and are unwilling to offer a fix. Looking for any help I can get at this point!

Csquared · 05-19-2010, 09:08 PM

Quote:

Originally Posted by jloomis13

Any news from anyone on this issue? I just hit 3100 miles on my '09 and have had this issue for about a month. Took it to the local dealer yesterday and only one other person could here it, and they "can't replicate the sound" and are unwilling to offer a fix. Looking for any help I can get at this point!

Drive the car with the service manager in it, and point it out to him. Or get those sound measuring devices that measures the frequency of sounds. And show him.

mcphelps · 05-19-2010, 09:23 PM

I thought I had this problem with my car. Turns out my wife had closed the A/C vent on the passenger door, causing a high pitched noise where the air was leaking out at the door-to-dash seal. Whew!

bumblez · 05-19-2010, 09:56 PM

Had FIXED HIGH PITCH NOISE (ECU)

01-06-2010, 06:32 PM	#107 (permalink)
G Fo12ce Premium Member Join Date: Nov 2009 Location: Socal Posts: 996 Drives: Sold! Rep Power: 51	I hear the noise too. It's very subtle to me and if I were to guess off the top of my head it sounds like fuel pump whine to me. I'm not saying it's not the ECU like you guys are saying because maybe it could be a bad fan bearing in the ECU or something wierd like that. But again to me it sounds like track cars I've heard with high flow or external fuel pumps. __________________ Nismo Suspension: New Owners Check Here!

01-06-2010, 11:22 PM	#108 (permalink)
bumblez Enthusiast Member Join Date: Sep 2009 Location: VA Posts: 326 Drives: Amuse 370z Rep Power: 15	I think the only way you can find out your ecu is type A or B, is go to the dealer to take the ecu out to check. Last edited by bumblez; 01-06-2010 at 11:29 PM.

01-07-2010, 07:43 AM	#110 (permalink)
Zsteve A True Z Fanatic Join Date: Sep 2009 Location: TX Posts: 3,298 Drives: the 2 balled club Rep Power: 21	I havent heard it in mine but Im also a little on the bad side for hearing in certain freqs, like 6k etc but my wife hasnt said anything about a noise ye teither so hopefully I dont have it. So are they putting the ECUs with the "B" in models still being sold today or did they stop the "B" at a certain time? __________________ 2010 LS3 C6 Silver coupe corvette

01-21-2010, 11:36 AM	#116 (permalink)
NXTAZEE Track Member Join Date: May 2009 Location: Vancouver Island Posts: 530 Drives: 2010 370Z 7AT Rep Power: 17	Once in a while I hear a very slight high pitch noise, but it comes from the rear of the car. This I would think is the fuel pump. I hear this in a lot of cars, mainly from the outside of the car though. This is probably because most cars have a lot more sound proofing than the Z. __________________ 2010 Carbon Silver 370Z 7AT charcoal int. sports package \| Clear Bra \| Invidia Gemini CBE \| CF B-Pillars \| CF Fangs \| CF Z emblems \| Swift Springs \| 20mm & 25mm Spacers \| SPC Camber Arms \| Brushed Aluminum shift knob

05-19-2010, 09:56 PM	#120 (permalink)
bumblez Enthusiast Member Join Date: Sep 2009 Location: VA Posts: 326 Drives: Amuse 370z Rep Power: 15	Z Had FIXED HIGH PITCH NOISE (ECU)

01-06-2010, 03:54 PM	#106 (permalink)
dudafunk Enthusiast Member Join Date: Nov 2009 Location: Long Island, NY Posts: 421 Drives: '09 370z Base Red AT Rep Power: 15	BTW anyone figure out how to find out if your serial number ends with the A or the B? From my manuals or from the dealer?

01-07-2010, 09:49 AM	#111 (permalink)
jpit Enthusiast Member Join Date: Feb 2009 Location: Washington State Posts: 440 Drives: 370Z Tour MT w/Spt Rep Power: 16	My car was manufactured in 10/08 and has the "A" ecu. Uprev's software reads the number as it needs to know which ecu is being tuned. Don't have the high frequency noise (yet).

01-15-2010, 06:50 PM	#112 (permalink)
Zvengeance Base Member Join Date: Mar 2009 Location: FL Posts: 31 Drives: 370z Nismo Rep Power: 16	My 370z Nismo, which I bought 2 months ago started getting the noise. Right now I have 1100 miles on it and it just got louder. I'm afraid to take it to the dealership and not have it happen. I have very bad luck when it comes to taking a car to the dealership and not being able to show them the problem. Does anyone have any suggestions on what I need to do? Is at a point that now all I focus on is that dam noise and it started giving me head aches.

01-21-2010, 10:25 AM	#114 (permalink)
Viera Track Member Join Date: Feb 2009 Location: Atlanta, GA Posts: 897 Drives: '09 M.Blue 370Z 6MT Rep Power: 264	Bump. Still waiting!

01-21-2010, 11:16 AM	#115 (permalink)
Tyrell Tyson Enthusiast Member Join Date: Jan 2010 Location: EU Posts: 295 Drives: P90 TR Rep Power: 15	Yoyo Bumblez posted in my thread about the same thing, i pmd him few days ago. Here was his post Bumblez- "Ok... here is update for my highpitch noise. My dealer just change ECU which is ending with A.. That noise has been reduced a little bit but still can hear. General service maneger was not there when I picked up my car. I think he might say try another ECU. Anyways... we gonna talk about this on monday. I will ask them to change to another Z. If they say NO?? I will hire an attorney." SUCKS BALLS huh Does anyone out there know a fix for this problem that effects alot of Z owners ?? can anyone solve it, 1 million dollars to the man that does - Ty

05-19-2010, 10:21 AM	#117 (permalink)
jloomis13 Base Member Join Date: May 2010 Location: Raleigh, NC Posts: 18 Drives: 16 Silver Nismo Tech Rep Power: 15	Any news from anyone on this issue? I just hit 3100 miles on my '09 and have had this issue for about a month. Took it to the local dealer yesterday and only one other person could here it, and they "can't replicate the sound" and are unwilling to offer a fix. Looking for any help I can get at this point!

05-19-2010, 09:23 PM	#119 (permalink)
mcphelps Base Member Join Date: Mar 2009 Location: Tucson, AZ Age: 65 Posts: 113 Drives: 09 Sprt/Tr/Nav PG M6 Rep Power: 16	I thought I had this problem with my car. Turns out my wife had closed the A/C vent on the passenger door, causing a high pitched noise where the air was leaking out at the door-to-dash seal. Whew!

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