Whining Noise From Engine Bay

iviegatron · 01-16-2011, 05:33 PM

There is this whining noise coming out from my engine bay. The noise only emits when the car is in gear and when its ON or when the engine is started. I do not hear the sound in ACC mode. When the car is not in gear, the sound goes away. Is this normal? Any ideas what could be making that noise? I have taken a video of it. Link is posted below.

I have read other threads in here that mentioned a similar high frequency whine. But not sure if its the exact same sound, since I do not hear it in the cabin due to the engine drowning out the noise.

Video:

SPOHN · 01-16-2011, 06:01 PM

That is odd. Hopefully someone can shine in.

bleufiend · 01-16-2011, 08:59 PM

Oyy, that is quite odd, I can see the electronics making a slight sound with the engine off, key on but not to the degree in your vid.

6SPD_FTW · 01-22-2011, 03:25 AM

Completely normal. My 2007 Altima 3.5SE did this also. My Z does the same as well. It's the throttle motors energizing. It's programmed to do this anytime ignition is ON and transmission is in gear. You want it to make that noise - promise!

Late,
Trav

iviegatron · 01-23-2011, 01:12 AM

If indeed it is the throttle motors energizing, is there a period when they are fully energized?

Dreezy562 · 01-25-2011, 02:10 PM

That sounds like somethings messed up mine doesn't make that sound

iviegatron · 01-25-2011, 06:58 PM

I just got my car back from the dealer today and he said all his other 2010 models make the same noise. I made a mistake, I should have asked to let me hear that sound if that is the case.

Dreezy562: When you were testing for the sound were all your electricals on and was the car in gear?

jpit · 01-26-2011, 04:36 PM

It is the throttle body. You can disconnect them and the whine will go away. HOWEVER, you will throw a code and unless you have a code reader and resetter it might not be worth the trouble.

GZ3 · 01-26-2011, 05:45 PM

wow never heard that on my 2010, gonna check it out..

01-16-2011, 05:33 PM	#1 (permalink)
iviegatron Base Member Join Date: Mar 2009 Location: Houston Posts: 19 Drives: 10 Nissan 370z BK M6 Rep Power: 16	Whining Noise From Engine Bay There is this whining noise coming out from my engine bay. The noise only emits when the car is in gear and when its ON or when the engine is started. I do not hear the sound in ACC mode. When the car is not in gear, the sound goes away. Is this normal? Any ideas what could be making that noise? I have taken a video of it. Link is posted below. I have read other threads in here that mentioned a similar high frequency whine. But not sure if its the exact same sound, since I do not hear it in the cabin due to the engine drowning out the noise. Video: Last edited by iviegatron; 01-16-2011 at 08:21 PM.

01-16-2011, 06:01 PM	#2 (permalink)
SPOHN A True Z Fanatic Join Date: Feb 2010 Location: Covington, GA Age: 45 Posts: 14,844 Drives: Waiting on next Z Rep Power: 221	That is odd. Hopefully someone can shine in. __________________

01-16-2011, 08:59 PM	#3 (permalink)
bleufiend Base Member Join Date: Jan 2011 Location: Miami, FL Posts: 200 Drives: 370z MB Spt/Tour 6sp Rep Power: 14	Oyy, that is quite odd, I can see the electronics making a slight sound with the engine off, key on but not to the degree in your vid. __________________ Z34 owner formerly Z33. OZOC FTW.

01-26-2011, 05:45 PM	#9 (permalink)
GZ3 A True Z Fanatic Join Date: Dec 2009 Location: SATX Posts: 3,296 Drives: Z Rep Power: 21	wow never heard that on my 2010, gonna check it out.. __________________ 09 GT-R 12' 370Z 7AT HANDED DOWN 12'+13' 5.0 SOLD

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01-22-2011, 03:25 AM	#4 (permalink)
6SPD_FTW Base Member Join Date: May 2009 Location: Bristol, VA Posts: 59 Drives: 09 370Z Bl 6MT Rep Power: 16	Completely normal. My 2007 Altima 3.5SE did this also. My Z does the same as well. It's the throttle motors energizing. It's programmed to do this anytime ignition is ON and transmission is in gear. You want it to make that noise - promise! Late, Trav

01-23-2011, 01:12 AM	#5 (permalink)
iviegatron Base Member Join Date: Mar 2009 Location: Houston Posts: 19 Drives: 10 Nissan 370z BK M6 Rep Power: 16	If indeed it is the throttle motors energizing, is there a period when they are fully energized?

01-25-2011, 02:10 PM	#6 (permalink)
Dreezy562 Enthusiast Member Join Date: Oct 2010 Location: Long beach, ca Posts: 419 Drives: 40th Rep Power: 15	That sounds like somethings messed up mine doesn't make that sound

01-25-2011, 06:58 PM	#7 (permalink)
iviegatron Base Member Join Date: Mar 2009 Location: Houston Posts: 19 Drives: 10 Nissan 370z BK M6 Rep Power: 16	I just got my car back from the dealer today and he said all his other 2010 models make the same noise. I made a mistake, I should have asked to let me hear that sound if that is the case. Dreezy562: When you were testing for the sound were all your electricals on and was the car in gear?

01-26-2011, 04:36 PM	#8 (permalink)
jpit Enthusiast Member Join Date: Feb 2009 Location: Washington State Posts: 440 Drives: 370Z Tour MT w/Spt Rep Power: 16	It is the throttle body. You can disconnect them and the whine will go away. HOWEVER, you will throw a code and unless you have a code reader and resetter it might not be worth the trouble.