02, 4.6L
120K
AT
No performance issues with noise. All fluids topped and look good. Sounds like master cylinder area
Makes noise only at idle.

28 seconds in you will hear the noise.


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

Hope I can post links?!

Any ideas?

 

BTW, I said in the vid about a brake booster, but I really dont know what im talking about lol...sounds like a pump drone..

One thing of note, Ive had the power steering rack replaced in the past and they said the pump was good then but maybe this is it? there are no squeels or whines like you hear when it dries out...no leaks either.

 

does it do it with your A/C off?

 

Yeah, its about 35 degrees out atm.

 

Did you have your defroster on? It sounded like i could here the air conditioner
compressor cycling off and on,which it will do if the defroster is on.
It sounded like i heard a click and the noise started , then another click and it stopped.

 

That's why I asked about the A/C

I agree with the pump noise. Sounded like something that was causing other things to shake at the same frequency.

 

Ill try it with the defroster and a/c totally off. usually 1 of the other is always on...

If it doesn't happen are we talking compressor?

 

Yes, the ac compressor.

 

Hasnt happened, been kinda mild here locally.

I wanna throw this out there. I have an AF1 air intake. The noise sounds like a drone or low pitched noise like blowing through a something hollow...I cant explain what would be causing it though. Just food for thought...

 

K, so it happned today. Had defroster/ac off.

Sounds like a vac/pump drone...could my iacv be going and its making the sound ripple through the air intake? I'm really at a loss here...

 

Fellaz, FYI. This was it.

I started youtubing a bunch of bad IAC vids. I happened to come across one with an aftermarket intake and sure enough it was very similar.

Placed an order and got my part. 10 min swap, took it out for a rip, and nothing. Nice and quiet! FYI for yall who might be running an aftermarket intake.

 

Glad you got it fixed, and thanks for the update as it will help others.
Sometimes the simple stuff can really be aggravating.