Humming noise on start ups...got video

[s13pignose]

http://www.youtube.com/watch?v=l_sLjXkQh8w

thats a video of under my hood on start ups, and about maybe halfway in the video you'll hear a loud humming noise. Definitely coming from the front of the car. It is driving me crazy and is embarrasing.

Any ideas on what it is?

Thanks in advance

[khilgers]

power steering pump......just a guess. Could be a lot of things. Try having a friend start the car and see if you can get a better idea of where it's coming from and go from there. You can also use a long screwdriver as a make shift stethoscope to pinpoint noises. Good luck.

[LA_phantom_240]

My s14 does that when she's first started up in the morning and when she's really cold. It makes that sound when you pull your foot off the clutch, right?

[Chrischeezer]

sounds like a glazed clutch...
does it do this when u release the clutch to shift? or only on start up?

have someone start it a few times.. and keep your ear right next to the motor..

[projekt_s13]

yep your clutch, mine did that sometimes.

[s13pignose]

Sorry guys don't think its that cause I have an automatic. So maybe it is ps related. Friend of mine said he thought it was a purge valve when I told
him about it, but he was never around to actually there to hear it.

Thanks

[s13pignose]

Oh yeah one question though...if its ps related...hoe come it doesn't do it on all start ups. The pump is belt driven, so I figured it should happen all the time if its shot. Also never hear anything when I make turns.

[tiresmokes13]

your starter is making the noise.
Its time for a new one soon.

[status:one]

that screeching sound when the car is turning on sounds like the starter is going bad.

[motorsnail]

Kinda hard to tell bad microphone....Could either be starter or a belt about to snap or a pully making funny noises. Have someone start the car while you hear where its coming from.


Edit: when belts get worn out they stretch the slack will make a wierd noise as the slack gets tacken away on start up because it goes from hanging with slack to spinning. Like it "chirps" on the pully sounds kinda like taking a peice on rubber across a wood floor kinda.

[s13pignose]

Hmm okay...I had someone start today while I listened and it sounded like it was coming from the back of the motor. I'll try it a couple more times tommorow and see if I can come up with anything new.

[LA_phantom_240]

Its not a belt or starter related. My s14 makes the EXACT same noise and like I said, it only happens when the motor is really cold. It makes no sound when I start it up with my foot on the clutch, but when I let out it makes that noise once or twice.

I realize the OP doesn't have a stick, but the noise is identical. Its somewhere near the back of the motor or in the tranny.