High-Pitch noise in the car

wooya21 · 07-07-2009, 04:10 PM

Hi, Everyone!

I brought a 370Z to my home last night.
It surely is a GREAT car.

However, there was a almost constant high-pitch noise from the car.
Does any one have same problem?

I don't think it's coming from engine or exhaust.
It was definitely not a rattling noise.
I wish I can describe it more accurately, but I can't.

If anyone has same problem, or how to resolve the matter,
please let me know. Thank you.

Modshack · 07-07-2009, 04:26 PM

Others have reported this, and in at least one case, it was diagnosed as the ECU which is mounted behind the glove box..Warranty fix

wooya21 · 07-07-2009, 04:41 PM

Thank you for the response.
I'll listen closely to the glove box.

semtex · 07-07-2009, 04:45 PM

Do a search. Enter "high pitched noise" for your search string. It'll give you the other threads.

VCuomo · 07-07-2009, 09:40 PM

Funny, I drove mine to work today without the radio on (hadn't driven it w/o the radio on before - just wanted to hear the engine for a change), and I could hear a barely noticeable high-pitched whine/squeal. I'll have to see if it's coming from the glove box area.

dancetracks · 07-07-2009, 09:48 PM

I've read the past threads on this. Does everyone eventually get this noise? I didn't hear it when I test drove the car at the dealer.

Diversion · 07-07-2009, 09:59 PM

Mine has this noise as well... hasn't bothered me enough to look for a fix.

spearfish25 · 07-07-2009, 10:16 PM

Please close this thread. It's deja vu all over again

wooya21 · 07-08-2009, 08:08 PM

Quote:

Originally Posted by spearfish25

Please close this thread. It's deja vu all over again

First of all, thank you for everyone's response.
I did find the many threads afterwards, and can you tell me how can I close this thread?

mspeasl · 07-08-2009, 10:52 PM

Quote:

Originally Posted by wooya21

First of all, thank you for everyone's response.
I did find the many threads afterwards,

Gear noise

zilent_jay · 08-11-2009, 01:27 AM

The only high-pitched whine I have experienced is from the AC. If a vent is closed all the way it makes a high pitched whistling noise. Very annoying. My 350z didn't do it.

Trips · 08-11-2009, 02:14 AM

Please people the search is not kryptonite so use and end threads that are repetitive.
AK were are you? end this and put it out of it's misery. Thanks

ZKindaGuy · 09-06-2009, 12:34 PM

My 370Z started to have the engine bay high-pitch sound. I traced it to the area of the ECU (or ECM = same damn thing). It reminds me of a high-voltage sound that is typical of electonic circuit boards that have developed a cold solder joint (crack). Once the board heats up enough to expand the solder the joint/crack gets temporarily bridged by the solder which then will cause a voltage disparity which produces such a high-pitch noise. Once the board cools off sufficiently to contract the solder the joint/crack sides move back into a gap shape which disconnects the flow of voltage in that joint which will cause the high-pitch noise to stop.

A batch of bad ECU boards may have made it through to Nissan which may have a weak spot which could allow a cold solder joint to occur over time due to constant expansion and contraction.

dad · 09-06-2009, 12:49 PM

Quote:

Originally Posted by Modshack

Others have reported this, and in at least one case, it was diagnosed as the ECU which is mounted behind the glove box..Warranty fix

I, in no way am doubting your knowledge of cars.
The September issue of Car&Driver, has the ECU on top of the transmission.
Is there more than one?

Modshack · 09-06-2009, 01:11 PM

Quote:

Originally Posted by dad

I, in no way am doubting your knowledge of cars.
The September issue of Car&Driver, has the ECU on top of the transmission.
Is there more than one?

There are several, but you're right. The ECU behind the glove box is referred to as the BCM (Body control module) which controls everything that the ECM (engine) does not control. Earlier posters described this location as the ECM, more accurately it should be the BCM..

07-07-2009, 04:10 PM	#1 (permalink)
wooya21 Base Member Join Date: Jul 2009 Location: Iowa City (in a month) Posts: 16 Drives: 2009 370Z Rep Power: 16	High-Pitch noise in the car Hi, Everyone! I brought a 370Z to my home last night. It surely is a GREAT car. However, there was a almost constant high-pitch noise from the car. Does any one have same problem? I don't think it's coming from engine or exhaust. It was definitely not a rattling noise. I wish I can describe it more accurately, but I can't. If anyone has same problem, or how to resolve the matter, please let me know. Thank you.

07-07-2009, 04:26 PM	#2 (permalink)
Modshack A True Z Fanatic Join Date: Mar 2009 Location: Greenville NC Posts: 2,883 Drives: 370Z Sport Rep Power: 976	Others have reported this, and in at least one case, it was diagnosed as the ECU which is mounted behind the glove box..Warranty fix __________________ Steal my car! (SOLD)...Now Porsche Cayman S Oil Cooler DIY: Here! Last edited by Modshack; 07-07-2009 at 04:29 PM.

07-07-2009, 04:45 PM	#4 (permalink)
semtex A True Z Fanatic Join Date: Jan 2009 Location: Behind enemy lines Age: 54 Posts: 5,995 Drives: People to drink Rep Power: 32	Do a search. Enter "high pitched noise" for your search string. It'll give you the other threads. __________________ "There are no small accidents on this circuit." -- Ayrton Senna 316.8whp & 248 ft/lbs (Dyno Dynamics) \| 319whp & 256 ft/lbs (DynoJet) (04/23/10) Stillen G3 CAI, CBE, Pulley / F.I. LTH / GTSpec Ladder Brace / Setrab Oil Cooler / UpRev-tuned by Forged Perf.

08-11-2009, 02:14 AM	#12 (permalink)
Trips Administrator Join Date: May 2009 Location: Disneyland, Ca Posts: 8,732 Drives: 🔰 Rep Power: 10	Please people the search is not kryptonite so use and end threads that are repetitive. AK were are you? end this and put it out of it's misery. Thanks __________________

09-06-2009, 12:34 PM	#13 (permalink)
ZKindaGuy Track Member Join Date: May 2009 Location: Ohio Posts: 699 Drives: 370Z-AT7 Tour+Sport Rep Power: 375	My 370Z started to have the engine bay high-pitch sound. I traced it to the area of the ECU (or ECM = same damn thing). It reminds me of a high-voltage sound that is typical of electonic circuit boards that have developed a cold solder joint (crack). Once the board heats up enough to expand the solder the joint/crack gets temporarily bridged by the solder which then will cause a voltage disparity which produces such a high-pitch noise. Once the board cools off sufficiently to contract the solder the joint/crack sides move back into a gap shape which disconnects the flow of voltage in that joint which will cause the high-pitch noise to stop. A batch of bad ECU boards may have made it through to Nissan which may have a weak spot which could allow a cold solder joint to occur over time due to constant expansion and contraction. Last edited by ZKindaGuy; 09-07-2009 at 11:37 AM.

07-07-2009, 04:41 PM	#3 (permalink)
wooya21 Base Member Join Date: Jul 2009 Location: Iowa City (in a month) Posts: 16 Drives: 2009 370Z Rep Power: 16	Thank you for the response. I'll listen closely to the glove box.

07-07-2009, 09:40 PM	#5 (permalink)
VCuomo Track Member Join Date: May 2009 Location: SoCal Posts: 887 Drives: BMW 335i Sport Rep Power: 17	Funny, I drove mine to work today without the radio on (hadn't driven it w/o the radio on before - just wanted to hear the engine for a change), and I could hear a barely noticeable high-pitched whine/squeal. I'll have to see if it's coming from the glove box area.

07-07-2009, 09:48 PM	#6 (permalink)
dancetracks Base Member Join Date: May 2009 Location: New Jersey Posts: 15 Drives: acura Rep Power: 16	I've read the past threads on this. Does everyone eventually get this noise? I didn't hear it when I test drove the car at the dealer.

07-07-2009, 09:59 PM	#7 (permalink)
Diversion Enthusiast Member Join Date: Apr 2009 Location: Jacksonville, Florida Posts: 393 Drives: 09 370Z Silver/Persi Rep Power: 284	Mine has this noise as well... hasn't bothered me enough to look for a fix.

07-07-2009, 10:16 PM	#8 (permalink)
spearfish25 A True Z Fanatic Join Date: Mar 2009 Location: Naples, FL Posts: 4,117 Drives: to work Rep Power: 1856	Please close this thread. It's deja vu all over again

08-11-2009, 01:27 AM	#11 (permalink)
zilent_jay Base Member Join Date: May 2009 Location: OKC Posts: 96 Drives: 2009 MB Base Sport Rep Power: 16	The only high-pitched whine I have experienced is from the AC. If a vent is closed all the way it makes a high pitched whistling noise. Very annoying. My 350z didn't do it.

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