High-Pitched Frequency Update

Minicobra1 · 01-06-2010, 02:35 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.

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

Keep us updated and let us know if the serial # B fixes the problem, thanks

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!

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?

fuct · 01-06-2010, 08:54 AM

could you guys with buzzing ECU's go see what yalls last character is? B? A? Z????

370Zsteve · 01-06-2010, 09:38 AM

Quote:

Originally Posted by fuct

could you guys with buzzing ECU's go see what yalls last character is? B? A? Z????

getmecoffee · 01-06-2010, 11:01 AM

What's the easiest way to get to the ECU to check?

TipsZ · 01-06-2010, 01:03 PM

Where can I got to see if I have serial number ending with a B or an A? The odd thing is that I do not hear that high pitched noise all the time. It seems to be hit or miss. Sometimes it is present, other times it is not. Almost as if the the voltage to the ECU changes ever so slightly, to cause the noise. I have experienced at times that if I hear the noise upon start up, I turn the car off and wait about 10 to 15 minutes and restart it, the sound is not present. Thus, it leads me to believe perhaps it is a grounding issue. If a proper ground is present at all times it helps regulate a constant voltage drop at all times. Either way, the next time I hear that damned noise I am taking it to the dealership for them to "document" in person the issue. I really hate it when the dealership can not recreate the issue for themselves, as it is pretty much a waste of my time of dropping off the vehicle for that day.

dudafunk · 01-06-2010, 02:48 PM

Bought new car last week, 8 miles, I hear the noise too.
After so much haggling with the sales/finance guys I doubt if they're gonna entertain me with further whinning and will just yo yo me... unless these issues can be handled by a new set of service techs instead of having to talk to the sales guy again?

Incidently, besides this ecu or whatever it is noise (i heard the recording in the thread - its 100% precise).... i have another small crackling noise under the passenger exhaust... 'ive put 300 miles so far and it hasn't gone yet.

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.

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.

Viera · 01-21-2010, 10:25 AM

Bump. Still waiting!

01-06-2010, 01:03 PM	#7 (permalink)
TipsZ Track Member Join Date: Mar 2009 Location: Lithia, FL Age: 52 Posts: 552 Drives: 09 Nissan 370z CS M6 Rep Power: 188	Where can I got to see if I have serial number ending with a B or an A? The odd thing is that I do not hear that high pitched noise all the time. It seems to be hit or miss. Sometimes it is present, other times it is not. Almost as if the the voltage to the ECU changes ever so slightly, to cause the noise. I have experienced at times that if I hear the noise upon start up, I turn the car off and wait about 10 to 15 minutes and restart it, the sound is not present. Thus, it leads me to believe perhaps it is a grounding issue. If a proper ground is present at all times it helps regulate a constant voltage drop at all times. Either way, the next time I hear that damned noise I am taking it to the dealership for them to "document" in person the issue. I really hate it when the dealership can not recreate the issue for themselves, as it is pretty much a waste of my time of dropping off the vehicle for that day. __________________ Dynojet 285 HP/245 TQ (pre CBE)// Agency Power CBE // GTM Test Pipes // JWT Pop Chargers // B&M Short Shifter // Eibach Springs // Powder-coated Akebono's // Powder-coated Strut Bar // Black Chromed 19" Rays // // Redline Designs Graphics TipsZ journal

01-06-2010, 06:32 PM	#10 (permalink)
G Fo12ce Premium Member Join Date: Nov 2009 Location: Socal Posts: 996 Drives: Sold! Rep Power: 53	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	#11 (permalink)
bumblez Enthusiast Member Join Date: Sep 2009 Location: VA Posts: 326 Drives: Amuse 370z Rep Power: 17	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	#12 (permalink)
Zsteve A True Z Fanatic Join Date: Sep 2009 Location: TX Posts: 3,298 Drives: the 2 balled club Rep Power: 23	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

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01-06-2010, 08:54 AM	#4 (permalink)
fuct A True Z Fanatic Join Date: May 2009 Location: Sugar Land Posts: 3,692 Drives: 97' Ranger :) Rep Power: 25	could you guys with buzzing ECU's go see what yalls last character is? B? A? Z????

01-06-2010, 11:01 AM	#6 (permalink)
getmecoffee Base Member Join Date: Nov 2009 Location: NY Posts: 52 Drives: Nissan 370Z Rep Power: 17	What's the easiest way to get to the ECU to check?

01-06-2010, 02:48 PM	#8 (permalink)
dudafunk Enthusiast Member Join Date: Nov 2009 Location: Long Island, NY Posts: 421 Drives: '09 370z Base Red AT Rep Power: 17	Bought new car last week, 8 miles, I hear the noise too. After so much haggling with the sales/finance guys I doubt if they're gonna entertain me with further whinning and will just yo yo me... unless these issues can be handled by a new set of service techs instead of having to talk to the sales guy again? Incidently, besides this ecu or whatever it is noise (i heard the recording in the thread - its 100% precise).... i have another small crackling noise under the passenger exhaust... 'ive put 300 miles so far and it hasn't gone yet.

01-06-2010, 03:54 PM	#9 (permalink)
dudafunk Enthusiast Member Join Date: Nov 2009 Location: Long Island, NY Posts: 421 Drives: '09 370z Base Red AT Rep Power: 17	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	#13 (permalink)
jpit Enthusiast Member Join Date: Feb 2009 Location: Washington State Posts: 440 Drives: 370Z Tour MT w/Spt Rep Power: 18	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	#14 (permalink)
Zvengeance Base Member Join Date: Mar 2009 Location: FL Posts: 31 Drives: 370z Nismo Rep Power: 18	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	#15 (permalink)
Viera Track Member Join Date: Feb 2009 Location: Atlanta, GA Posts: 897 Drives: '09 M.Blue 370Z 6MT Rep Power: 266	Bump. Still waiting!