Loud whining noise on deceleration

brandad_1 · 08-15-2022, 10:56 AM

What’s causing this sound?:
https://youtube.com/shorts/y7eAPfeXyjc?feature=share
It just started happening yesterday when I got back from a road trip. My guess is a clutch bearing but idk which on or if it’s something else completely different.

BettyZ · 08-15-2022, 11:42 AM

Sounds expensive.

brandad_1 · 08-16-2022, 04:09 PM

Just lifted the car and it’s for sure something to do with either the clutch or transmission. The car still drives fine. Clutch engages fine, gear switching is still the same as well.

Rusty · 08-16-2022, 07:50 PM

WTF? Sounds like you're choking a duck at the end of the rev. Does it still make the noise when you pull in the clutch pedal and rev it?

Dreadnaught · 08-18-2022, 12:45 AM

Get the car back in the air again and get someone to raise and lower the RPM's so you can better pinpoint the noise with the clutch pedal in and out. Use either a stethoscope or a long screwdriver to put to areas on the bell housing to help pinpoint the noise. If you use a screwdriver put the handle part to your ear and the flathead or Phillips end on where you want to listen.

You can obviously disregard the wheel bearings, axles, diff and drive shaft as to them not making noise since the noise is present while stationary while revving the engine. I always hated when service writers would just put check noise. *rolls eyes*

I've never heard a noise like this before. I'm interested in what's causing it.

Report back with what you find.

brandad_1 · 09-01-2022, 11:43 PM

It’s was the test pipe gaskets. Upgraded to metal ones and the noise completely went away

Averying · 09-02-2022, 07:41 AM

Quote:

Originally Posted by brandad_1

It’s was the test pipe gaskets. Upgraded to metal ones and the noise completely went away

Header side or y-pipe side?

Sent from my iPhone using Tapatalk

brandad_1 · 09-02-2022, 01:41 PM

Quote:

Originally Posted by Averying

Header side or y-pipe side?

Sent from my iPhone using Tapatalk

The headers side, one of the gaskets had burned through and I guess that made the weird noise.

08-15-2022, 10:56 AM	#1 (permalink)
brandad_1 Base Member Join Date: Jul 2020 Location: Los Angeles Posts: 25 Drives: 2010 Nissan 370z Rep Power: 5	Loud whining noise on deceleration What’s causing this sound?: https://youtube.com/shorts/y7eAPfeXyjc?feature=share It just started happening yesterday when I got back from a road trip. My guess is a clutch bearing but idk which on or if it’s something else completely different.

08-15-2022, 11:42 AM	#2 (permalink)
BettyZ A True Z Fanatic Join Date: Aug 2018 Location: Chicagoland Age: 38 Posts: 5,261 Drives: A Garage Queen Rep Power: 2684371	Sounds expensive. __________________ '14 MB Nismo \| Boost Lab 6870 1.32 AR 553 HP / 471 ft.-lbs. Betty Mods

08-16-2022, 07:50 PM	#4 (permalink)
Rusty Ronin Samurai - Assassin Join Date: Dec 2011 Location: Fayettenam,Pennsyltucky Age: 69 Posts: 35,343 Drives: 2011 Nismo GM 6M Rep Power: 2684438	WTF? Sounds like you're choking a duck at the end of the rev. Does it still make the noise when you pull in the clutch pedal and rev it? JARblue and BettyZ like this. __________________ 浪人 - 殺し屋 "The Difficult Anytime, The Impossible By Appointment Only" http://www.the370z.com/members-370z-...o-journal.html

08-18-2022, 12:45 AM	#5 (permalink)
Dreadnaught Track Member Join Date: Dec 2009 Location: Farmington, Utah Posts: 582 Drives: 14 SR 370z 6MT Rep Power: 10140	Get the car back in the air again and get someone to raise and lower the RPM's so you can better pinpoint the noise with the clutch pedal in and out. Use either a stethoscope or a long screwdriver to put to areas on the bell housing to help pinpoint the noise. If you use a screwdriver put the handle part to your ear and the flathead or Phillips end on where you want to listen. You can obviously disregard the wheel bearings, axles, diff and drive shaft as to them not making noise since the noise is present while stationary while revving the engine. I always hated when service writers would just put check noise. rolls eyes I've never heard a noise like this before. I'm interested in what's causing it. Report back with what you find. JARblue likes this. __________________ Ford Diesel and Heavy Line Technician at your service. Last edited by Dreadnaught; 08-19-2022 at 01:10 AM.

09-01-2022, 11:43 PM	#6 (permalink)
brandad_1 Base Member Join Date: Jul 2020 Location: Los Angeles Posts: 25 Drives: 2010 Nissan 370z Rep Power: 5	It’s was the test pipe gaskets. Upgraded to metal ones and the noise completely went away Rusty, sx moneypit, BettyZ and 1 others like this.

08-16-2022, 04:09 PM	#3 (permalink)
brandad_1 Base Member Join Date: Jul 2020 Location: Los Angeles Posts: 25 Drives: 2010 Nissan 370z Rep Power: 5	Just lifted the car and it’s for sure something to do with either the clutch or transmission. The car still drives fine. Clutch engages fine, gear switching is still the same as well.

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