Faint whine sound under throttle?

wdkwang · 09-09-2011, 09:41 PM

It's random but there are times when I'm accelerating and there's this faint whine sound coming from the motor. Closest thing I can associate it with is like a supercharger whine. Anyone experience this before?

Mandingo · 09-09-2011, 09:48 PM

I don't hear a whine at all. Check for a leak in the intake?

Masa · 09-09-2011, 10:02 PM

ECU whine? It was a known issue with the 09's but you have a '10... I thought it was resolved with that year.

High pitch whine

oleg · 09-09-2011, 10:15 PM

I get it too and I have an 11. I Don't mind the sound one bit though or any other sounds the car makes makes it feel like more of a raw car.

Rooskey · 09-09-2011, 11:20 PM

I have the same sound only when casually accelerating in the lower rpms. Mostly just when cruising and driving normall. When I let off the accelerator it goes away. Its kinda like a ring and pinion whine..

Skeeterbop · 09-09-2011, 11:22 PM

I notice it here and there. Usually only if i turn the volume way down. At normal listening levels it's unnoticable for me.

ImportConvert · 09-10-2011, 01:03 AM

Alternator maybe. I know some GM alternators sound like little superchargers under there. Maybe your ears are very sensitive to that frequency and that is what you are hearing.

UNKNOWN_370 · 09-10-2011, 05:13 PM

I've heard it too. Its not like the ecu whine that has been described in the past. Its not electronic. It sounds more like forced induction. It sounds pretty kool to me.

TongMan · 09-10-2011, 07:25 PM

It's probably the supercharger.

shaun66 · 09-10-2011, 10:41 PM

I can hear it to with the windows down, it sounds like race car.

Red__Zed · 09-11-2011, 12:18 AM

You sure it's not from the diff? The z's diff whines like a mother.

shaun66 · 09-11-2011, 12:31 AM

Quote:

Originally Posted by Red__Zed

You sure it's not from the diff? The z's diff whines like a mother.

Possible only really hear it when I'm crawling around in a parking lot or accelerating super slow.

jpit · 09-11-2011, 12:36 PM

The slight whine from the engine area is coming from the throttle bodies. To confirm, put the car in neutral and see if the whining stops.

Red__Zed · 09-11-2011, 02:13 PM

Quote:

Originally Posted by shaun66

Possible only really hear it when I'm crawling around in a parking lot or accelerating super slow.

That's exactly how I was. I changed to redline and it helped a bunch. Still there due to the aggressive backlash settings Nissan sets.

Nissanboy · 09-11-2011, 02:23 PM

It's normal, it comes from the differential ring and pinion

09-09-2011, 09:41 PM	#1 (permalink)
wdkwang Track Member Join Date: Nov 2010 Location: N/A Posts: 899 Drives: slidewayz Rep Power: 21	Faint whine sound under throttle? It's random but there are times when I'm accelerating and there's this faint whine sound coming from the motor. Closest thing I can associate it with is like a supercharger whine. Anyone experience this before? __________________ Powerhouse Amuse \| K&N Typhoon Intakes \| MotorDyne ART Pipes \| Borla Catback Exhaust \| B&M Short Shifter \| Intake Ducts \| Ichiba 25mm F/R Spacers \| Carbon Fiber Interior Vinyl Wrap \| Tints \| 10000k HIDs \| Vtak, yo!

09-09-2011, 09:48 PM	#2 (permalink)
Mandingo Track Member Join Date: Nov 2010 Location: Dallas Posts: 625 Drives: '10 370z 6spd Rep Power: 3371	I don't hear a whine at all. Check for a leak in the intake? __________________ some mods

09-09-2011, 10:02 PM	#3 (permalink)
Masa A True Z Fanatic Join Date: Feb 2011 Location: Annapolis, MD Posts: 2,237 Drives: Family Cars Rep Power: 20	ECU whine? It was a known issue with the 09's but you have a '10... I thought it was resolved with that year. High pitch whine __________________ BMW 340i Jeep Cherokee Trailhawk Last edited by Masa; 09-09-2011 at 10:07 PM.

09-09-2011, 11:22 PM	#6 (permalink)
Skeeterbop A True Z Fanatic Join Date: Jan 2011 Location: Fort Bliss, TX Age: 40 Posts: 1,440 Drives: 2011 GM 370 base SP Rep Power: 16	I notice it here and there. Usually only if i turn the volume way down. At normal listening levels it's unnoticable for me. __________________ Srenity: "Yeah no rest needed to spread the love when your 20 that's for sure...."

09-10-2011, 07:25 PM	#9 (permalink)
TongMan A True Z Fanatic Join Date: Feb 2010 Location: NorCal Posts: 1,297 Drives: 2013 Nissan GTR Rep Power: 715	It's probably the supercharger. enzowang likes this.

09-09-2011, 10:15 PM	#4 (permalink)
oleg Enthusiast Member Join Date: Dec 2010 Location: Illinois Posts: 321 Drives: 2011 370z 6mt sp Rep Power: 15	I get it too and I have an 11. I Don't mind the sound one bit though or any other sounds the car makes makes it feel like more of a raw car.

09-09-2011, 11:20 PM	#5 (permalink)
Rooskey Track Member Join Date: Jul 2010 Location: South Carolina Posts: 974 Drives: 2014 Alpha7 GTR Rep Power: 16	I have the same sound only when casually accelerating in the lower rpms. Mostly just when cruising and driving normall. When I let off the accelerator it goes away. Its kinda like a ring and pinion whine..

09-10-2011, 01:03 AM	#7 (permalink)
ImportConvert A True Z Fanatic Join Date: Jun 2010 Location: SWMO Posts: 4,454 Drives: 2019 CX5 GT Reserve Rep Power: 7627	Alternator maybe. I know some GM alternators sound like little superchargers under there. Maybe your ears are very sensitive to that frequency and that is what you are hearing.

09-10-2011, 05:13 PM	#8 (permalink)
UNKNOWN_370 A True Z Fanatic Join Date: Jul 2009 Location: ny'r livn in tx Posts: 8,687 Drives: well over 130m.p.h. Rep Power: 14858	I've heard it too. Its not like the ecu whine that has been described in the past. Its not electronic. It sounds more like forced induction. It sounds pretty kool to me.

09-10-2011, 10:41 PM	#10 (permalink)
shaun66 Track Member Join Date: Mar 2010 Location: n Posts: 837 Drives: MB 370z 7AT Rep Power: 16	I can hear it to with the windows down, it sounds like race car.

09-11-2011, 12:18 AM	#11 (permalink)
Red__Zed A True Z Fanatic Join Date: Jul 2010 Location: window seat Posts: 28,940 Drives: Mostly on two wheels Rep Power: 120	You sure it's not from the diff? The z's diff whines like a mother.

09-11-2011, 12:36 PM	#13 (permalink)
jpit Enthusiast Member Join Date: Feb 2009 Location: Washington State Posts: 440 Drives: 370Z Tour MT w/Spt Rep Power: 16	The slight whine from the engine area is coming from the throttle bodies. To confirm, put the car in neutral and see if the whining stops. fitxpert likes this.

09-11-2011, 02:23 PM	#15 (permalink)
Nissanboy Enthusiast Member Join Date: Dec 2010 Location: H-Town Posts: 378 Drives: Too slow Rep Power: 15	It's normal, it comes from the differential ring and pinion

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