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:

That is odd. Hopefully someone can shine in.

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.

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

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

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

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?

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.

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