VERY weird noise

[Skidzz]

I just started my car to let it warm up and it made a sound that it's made a few times now. I was just sitting here in the computer room and I hear my car make this really loud low-pitch moaning sound as it's just sitting the idling. It's also made the same sound a few times while I was down-shifting. It sounds like a damn bull horn or something and sounds like something might be rubbing together. It only does it for a couple of seconds. I have no clue what it could be, I've never heard a car make this sound. Anyone know?

 

[Nater]

In my '00 GT I found it to be the air humming as it went through the intake, especially around the throttle body and plenum. Once the car warmed up it quit.

 

[Skidzz]

Well, I hope that's all it is. I've got too many plans for this car to be held back by repairs.....

 

[Nater]

You could do a search on the humming sound as this has been brought up before a few times. I don't remember what came about it as my '00 was totaled and my '02 doesn't do that.

 

[Mike97gt]

i have seen this a few times on the 4.6 2v and it's the iac valve.. very cheap too repair yourself.

 

[RedDaemon]

ugh IAC when i first got my GT that needed to be replaced, i learned my lesson when they charged me 90 bucks for it never goin to ford ever again

/rant

 

[HoustonGT]

Where should i go to buy a new IAC valve ? Does autozone sell the original motorcraft ones or only OEM replacements?

 

[Mike97gt]

ugh IAC when i first got my GT that needed to be replaced, i learned my lesson when they charged me 90 bucks for it never goin to ford ever again

/rant

lol only 90 bucks.. i rape the hell out of the rich area i work in.. i get 1 hour diag thats 93 bucks.. plus another hour for install and the parts dept charges about 100 for the iac

so that would have been 300 at my work.. hey i got to eat too.

 

[stangGT97]

Where should i go to buy a new IAC valve ? Does autozone sell the original motorcraft ones or only OEM replacements?

OE replacement, made by Wells. I've had one for about a year from Autozone, no problems.

 

[RedDaemon]

lol only 90 bucks.. i rape the hell out of the rich area i work in.. i get 1 hour diag thats 93 bucks.. plus another hour for install and the parts dept charges about 100 for the iac

so that would have been 300 at my work.. hey i got to eat too.

this is true