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Screeching noise coming form tb???

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Old 10-11-2010, 01:55 PM
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Question Screeching noise coming form tb???

Hey guys i got a sreeching noise coming from what i hear inside my tb, i put my ear in the intake and sounds loud like its sucking in too much air. Could it be my throttle body gasket? My bolts are tight. Idk what it is, it also does it at idle and at low speeds, but really loud on cold starts. Any advice will help. Hope to get it fixed tonight.

Thanks guys!!!

Last edited by soloman369; 10-11-2010 at 01:56 PM. Reason: lettering
Old 10-11-2010, 02:55 PM
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vacum leak? is everything connected right?
Old 10-11-2010, 02:59 PM
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does it run fine and everything? maybe a hanging idle if you rev it up?
Old 10-11-2010, 03:40 PM
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No it runs great. No vac leaks. Just when I put my ear to the air lid I can hear it inside. I took off the below and u can hear it like a high piched whistle or something. Sounds horrible when ur in front of the car its that noticeable.
Old 10-11-2010, 07:01 PM
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I bet its the noise of air passing thru the hole the IAC covers. when a lot of air goes thru there it sounds funny.
what TB are you running?
Old 10-11-2010, 07:03 PM
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see if you just barely crack the tb blade open if it goes away, and you'll know its that for sure.
Old 10-11-2010, 08:48 PM
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sound like a whistling noise? probaBLY your gasket.
Old 10-12-2010, 07:56 AM
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Originally Posted by conor.davis
I bet its the noise of air passing thru the hole the IAC covers. when a lot of air goes thru there it sounds funny.
what TB are you running?
I think this is it. ^^^

Im runnin a stock tb just P&P.

I took off my tb yesterday too see if it was the gasket. But it looked fine. So I decided to look at the IAC sensor and it was like all drity like had gunk all over it. So i cleaned it off. Now the noise is really low not as noticable in park or in drive at idle. But You where right when i opened the blade a lil it went away. So im pretty sure the gunk was causeing it. Cause it looks like the sensor is spring loaded, therefore the gunk was causeing it too not close well im guessing? some one correct me if im wrong and explain what that senor really does.
Old 10-12-2010, 09:51 AM
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It just opens/closes to let more/less air flow through when the tb blade is closed since the engine always needs to be fed air, when not enough is going through the stock hole drilled in the blade.
Old 10-12-2010, 09:53 AM
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Makes the most noise when its opened up... I've heard them make some funny noises. Sometimes almost sounds supercharged haha
Old 10-12-2010, 01:00 PM
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Originally Posted by conor.davis
Makes the most noise when its opened up... I've heard them make some funny noises. Sometimes almost sounds supercharged haha
Man thats what it sounded like ha ha. But it sounds better now. My hole in my blade was big, cause i bought it off some guy that had a cam in his car. So i just used ducktape to plug up the hole. Cause it would idle all high. So do u think cause i coverd the hole it makes my IAC open and make that noise?
Old 10-12-2010, 01:14 PM
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^ Possibly.

Spray some Seafoam in the TB and the passages to maybe clean something out. Do you have a spacer? Sometimes those have a tendency to whistle.
Old 10-12-2010, 06:32 PM
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its because you covered the TB hole completely. I did that once with a bbk and it did it.



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