High pitch noise coming from passenger side

CCCLXXZ · 06-18-2009, 05:38 PM

Just a speculation, but have you considered an exhaust leak from the header or exhaust (cat)? Typically exhaust leaks are rpm dependent and can have a high pitch noise which get louder as a greater volume of exhaust travels through the system. Based on the service manual, nissan has metering equipment for diagnosing unknown sounds from the chassis and related.

It may well be electrically related, but worth considering any other variables regarding rpm dependent issues.

2bits · 06-18-2009, 05:46 PM

Quote:

Originally Posted by CCCLXXZ

Just a speculation, but have you considered an exhaust leak from the header or exhaust (cat)? Typically exhaust leaks are rpm dependent and can have a high pitch noise which get louder as a greater volume of exhaust travels through the system. Based on the service manual, nissan has metering equipment for diagnosing unknown sounds from the chassis and related.

It may well be electrically related, but worth considering any other variables regarding rpm dependent issues.

The input is appreciated, but I'm 99.99% sure it's an electronic noise. The volume doesn't increase or change with RPM. It's completely an on/off problem. Also, I would expect the noise to be loudest outside the vehicle if it had anything to do with the header/exhaust, but instead it's coming from a specific location under the dash where there are plenty of electronic bits.

Roo · 06-18-2009, 06:05 PM

Quote:

Originally Posted by CCCLXXZ

Just a speculation, but have you considered an exhaust leak from the header or exhaust (cat)? Typically exhaust leaks are rpm dependent and can have a high pitch noise which get louder as a greater volume of exhaust travels through the system. Based on the service manual, nissan has metering equipment for diagnosing unknown sounds from the chassis and related.

It may well be electrically related, but worth considering any other variables regarding rpm dependent issues.

Good idea but the noise does not increase or decrease with RPMs. If it is idling there is no noise, if you raise the RPM 1 rpm the noise starts and stays at that level throughout whatever RPM your in.

Roo · 06-18-2009, 06:06 PM

Quote:

Originally Posted by 2bits

BTW, I just confirmed my noise is also under the glove compartment. If you put your ear by the cigarette lighter in the passenger footwell, it's very very noticeable. Even a deaf mechanic should be able to hear it if I direct them to that spot. Service appointment scheduled for tomorrow at 2pm.

I am going to find the fuse when I get for that and pull it, if it shuts off then they will really help diagnose the problem.

Roo · 06-18-2009, 06:06 PM

And as 2 bits said you cannot hear this noise at all while outide the vehicle.

NRGSwing · 06-18-2009, 06:37 PM

Quote:

Originally Posted by jpit

I hear a high pitched whine with the car not running but the ignition switch on. I have not been able to isolate it but I don't hear it when I am driving.

Not to hijack, but I have this, too. Haven't taken the time yet to try and track it down.

CCCLXXZ · 06-18-2009, 06:50 PM

I am curious if those who are experiencing have the base models or touring? Also since the noise is now specified as throttle (accelerator) dependent it may have something to do with the fly by wire ECM. I am not sure where the module is but it may be near the area of described noises. I am not sure where the cabin filter assembly is located on the vehicle but a air leak may exhibit noises in the same area. Have you tried taking the glove box out and listening? I am sure there is usually a clip or restriction of some type that limits it's range of motion, take it off and see if the sounds can be better identified.

How about some rep?

We don't need nissan to fix this, there are a lot more heads in this forum than they have on salary. Just take it step by step.

Roo · 06-18-2009, 07:10 PM

Quote:

Originally Posted by CCCLXXZ

I am curious if those who are experiencing have the base models or touring? Also since the noise is now specified as throttle (accelerator) dependent it may have something to do with the fly by wire ECM. I am not sure where the module is but it may be near the area of described noises. I am not sure where the cabin filter assembly is located on the vehicle but a air leak may exhibit noises in the same area. Have you tried taking the glove box out and listening? I am sure there is usually a clip or restriction of some type that limits it's range of motion, take it off and see if the sounds can be better identified.

How about some rep?

We don't need nissan to fix this, there are a lot more heads in this forum than they have on salary. Just take it step by step.

While I agree that we have more heads and could figure it out I don't think I should have to

. I work 50-60 hours a week running a business and the last thing I want to do is go home, dismantle my new car, and tinker around. If I wanted to do that I would have bought a Ford or GM.

BTW my car is a Touring with navigation.

Roo · 06-18-2009, 07:12 PM

Quote:

Originally Posted by jpit

I hear a high pitched whine with the car not running but the ignition switch on. I have not been able to isolate it but I don't hear it when I am driving.

So you hear a noise when it is in ACC?

jpit · 06-18-2009, 07:34 PM

I don't have any idea if the high pitched whine I am getting is related to this thread. Can someone duplicate this condition (6 speed, touring)and tell me if you hear anything? Ignition switch on (car not running and not ACC) and transmission in gear, open the hood and listen for the whine. Interestingly when the transmission is put into neutral the whine stops. Thanks for any help.

Roo · 06-18-2009, 07:37 PM

I am a bit lost, how is the car making any noise if it is not started or in ACC?

WShade · 06-18-2009, 07:38 PM

On whine I hear is the fuel pump.

jpit · 06-18-2009, 08:36 PM

Roo,

The ignition switch is in the on position and it could very well be the fuel pump. Would the fuel pump go off in neutral?

Roo · 06-18-2009, 08:39 PM

Quote:

Originally Posted by jpit

Roo,

The ignition switch is in the on position and it could very well be the fuel pump. Would the fuel pump go off in neutral?

Excuse my newbie question since I have only had the car a few days and don't drive it. How do you turn the ignition switch on a car that does not have an ignition?

jpit · 06-18-2009, 08:40 PM

Push the ignition button once quickly for ACC, twice for on and hold to start.

06-18-2009, 07:38 PM	#27 (permalink)
WShade Track Member Join Date: Jan 2009 Location: San Antonio, TX Posts: 765 Drives: 09 370Z T/S/N Rep Power: 187	On whine I hear is the fuel pump. __________________ Q50S Q60 RS400

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06-18-2009, 05:38 PM	#16 (permalink)
CCCLXXZ Base Member Join Date: May 2009 Location: Chicago Suburbs Posts: 164 Drives: T/S/MB/6 370z Rep Power: 400	Just a speculation, but have you considered an exhaust leak from the header or exhaust (cat)? Typically exhaust leaks are rpm dependent and can have a high pitch noise which get louder as a greater volume of exhaust travels through the system. Based on the service manual, nissan has metering equipment for diagnosing unknown sounds from the chassis and related. It may well be electrically related, but worth considering any other variables regarding rpm dependent issues.

06-18-2009, 06:06 PM	#20 (permalink)
Roo Base Member Join Date: Jun 2009 Location: Alta Loma Posts: 161 Drives: 2009 370z with nav Rep Power: 15	And as 2 bits said you cannot hear this noise at all while outide the vehicle.

06-18-2009, 06:50 PM	#22 (permalink)
CCCLXXZ Base Member Join Date: May 2009 Location: Chicago Suburbs Posts: 164 Drives: T/S/MB/6 370z Rep Power: 400	I am curious if those who are experiencing have the base models or touring? Also since the noise is now specified as throttle (accelerator) dependent it may have something to do with the fly by wire ECM. I am not sure where the module is but it may be near the area of described noises. I am not sure where the cabin filter assembly is located on the vehicle but a air leak may exhibit noises in the same area. Have you tried taking the glove box out and listening? I am sure there is usually a clip or restriction of some type that limits it's range of motion, take it off and see if the sounds can be better identified. How about some rep? We don't need nissan to fix this, there are a lot more heads in this forum than they have on salary. Just take it step by step.

06-18-2009, 07:34 PM	#25 (permalink)
jpit Enthusiast Member Join Date: Feb 2009 Location: Washington State Posts: 440 Drives: 370Z Tour MT w/Spt Rep Power: 16	I don't have any idea if the high pitched whine I am getting is related to this thread. Can someone duplicate this condition (6 speed, touring)and tell me if you hear anything? Ignition switch on (car not running and not ACC) and transmission in gear, open the hood and listen for the whine. Interestingly when the transmission is put into neutral the whine stops. Thanks for any help.

06-18-2009, 07:37 PM	#26 (permalink)
Roo Base Member Join Date: Jun 2009 Location: Alta Loma Posts: 161 Drives: 2009 370z with nav Rep Power: 15	I am a bit lost, how is the car making any noise if it is not started or in ACC?

06-18-2009, 08:36 PM	#28 (permalink)
jpit Enthusiast Member Join Date: Feb 2009 Location: Washington State Posts: 440 Drives: 370Z Tour MT w/Spt Rep Power: 16	Roo, The ignition switch is in the on position and it could very well be the fuel pump. Would the fuel pump go off in neutral?

06-18-2009, 08:40 PM	#30 (permalink)
jpit Enthusiast Member Join Date: Feb 2009 Location: Washington State Posts: 440 Drives: 370Z Tour MT w/Spt Rep Power: 16	Push the ignition button once quickly for ACC, twice for on and hold to start.