Weird noise as RPM's rise 7AT, Videos in thread

anoobis370z · 03-16-2015, 03:40 PM

You don't have anything plugged into the aux jack right? I found when I have my headphone cable plugged in and nothing connected to it I get a high pitched whine (aka ground loop). Not sure if that's what I'm hearing it does sound similar tho.

Sidetracked · 03-16-2015, 05:50 PM

Quote:

Originally Posted by anoobis370z

You don't have anything plugged into the aux jack right? I found when I have my headphone cable plugged in and nothing connected to it I get a high pitched whine (aka ground loop). Not sure if that's what I'm hearing it does sound similar tho.

No nothing is plugged into the aux jack. It's definitely coming from under the hood.

Datsun240Z71 · 03-17-2015, 06:56 AM

Might be worthwhile to take a run at Nissan seeing that your warranty just ran out a month ago. There's a chance they might work with you. Never know until you ask.

Memphis370Z · 03-31-2015, 08:55 PM

Did you ever get this figured out?

Sidetracked · 03-31-2015, 09:23 PM

Quote:

Originally Posted by Memphis370Z

Did you ever get this figured out?

Nope. No one can figure out what it is. Mechanic said it could be a bearing somewhere but there is no way to find out until it gets worst.

grobie · 04-01-2015, 06:29 AM

Yep, it sounds like a bearing going out in the pump. $1500 though??? way steep. Check with other shops.

Jsolo · 05-01-2015, 01:33 PM

Had this exact noise on my G. Started about 4-5 months into ownership. Thought it trans related. Sounded alot like a supercharger whine. Tried synthetic MT fluid which quieted it slightly (in my head apparently..keep reading). Whine was also present when turning the wheel while idling after driving the car a bit. Very similar to that morning sickness like noise that used to be common on fwd cars.

Eventually came across ITB12-035. This replaces the PS reservoir with an updated part. Had this performed recently. No more power steering noise at all, and no other whine which was identical to that shown in the videos in the OP.

The part is about $175 if out of warranty. Replacement should be fairly easy. Was in/out of the dealership in about an hr, test drive included. Good luck.

03-16-2015, 03:40 PM	#16 (permalink)
anoobis370z Base Member Join Date: Jul 2013 Location: Melbourne, Florida Posts: 13 Drives: 2013 370z Sport 7AT Rep Power: 11	You don't have anything plugged into the aux jack right? I found when I have my headphone cable plugged in and nothing connected to it I get a high pitched whine (aka ground loop). Not sure if that's what I'm hearing it does sound similar tho. DYNAZOR likes this.

03-17-2015, 06:56 AM	#18 (permalink)
Datsun240Z71 Base Member Join Date: Jan 2012 Location: Nashville Posts: 177 Drives: '71 240Z Rep Power: 13	Might be worthwhile to take a run at Nissan seeing that your warranty just ran out a month ago. There's a chance they might work with you. Never know until you ask. DYNAZOR likes this. __________________ Randy in Nashville Middle Tennnessee Z Club 1971 240Z

05-01-2015, 01:33 PM	#22 (permalink)
Jsolo Track Member Join Date: Dec 2011 Location: chicago Posts: 783 Drives: '12 G37 6MT Rep Power: 14	Had this exact noise on my G. Started about 4-5 months into ownership. Thought it trans related. Sounded alot like a supercharger whine. Tried synthetic MT fluid which quieted it slightly (in my head apparently..keep reading). Whine was also present when turning the wheel while idling after driving the car a bit. Very similar to that morning sickness like noise that used to be common on fwd cars. Eventually came across ITB12-035. This replaces the PS reservoir with an updated part. Had this performed recently. No more power steering noise at all, and no other whine which was identical to that shown in the videos in the OP. The part is about $175 if out of warranty. Replacement should be fairly easy. Was in/out of the dealership in about an hr, test drive included. Good luck. Memphis370Z likes this. __________________ G37S Sedan 6MT, Eibach swaybars, Invidia Exhaust, Weaker Clutch Pedal Spring For sale links

Similar Threads
Thread	Thread Starter	Forum	Replies	Last Post
Weird Noise	jwomack1547	Intake/Exhaust	10	10-27-2014 09:25 PM
What's this Weird Noise?	critical	Brakes & Suspension	30	01-01-2014 12:23 AM
a strange noise in the high RPM's	Kaiser370z	Engine & Drivetrain	5	10-09-2012 10:37 AM
Weird noise around 4k rpm	gh0st3794	Engine & Drivetrain	13	06-15-2010 07:53 PM
7AT weird noise. Do you have this too?	Juruki	Engine & Drivetrain	7	04-30-2010 12:46 AM

03-31-2015, 08:55 PM	#19 (permalink)
Memphis370Z A True Z Fanatic Join Date: Sep 2014 Location: Memphis Area Posts: 3,117 Drives: '09 MB Rep Power: 124433	Did you ever get this figured out?

04-01-2015, 06:29 AM	#21 (permalink)
grobie Base Member Join Date: Jan 2015 Location: Arizona City, AZ Posts: 19 Drives: 2009 370Z Sport Rep Power: 10	Yep, it sounds like a bearing going out in the pump. $1500 though??? way steep. Check with other shops.