Throttle body whisel

[darrylglenda96]

Good evening. I have 93 5.0 gt. Iam getting a Whistling sound coming from The air filter area. At idle and acceleration. Bbk. Cold air 70mm mass air, 65 mm throttle body. Going into cobra intake. Any idea why the air going into the air filter and tube is whistling very load? Thanks for any help.

 

[TOOLOW91]

What throttle body ? Bbk ?

 

[darrylglenda96]

65mm BBK

 

[Kid wita 5oh]

It's the bbk throttle body. They're known to whistle

 

[TOOLOW91]

It's the bbk throttle body. They're known to whistle

Yup , some guys have had luck cleaning up the iac passages but I personally ditched mine for an Accufab and never looked back

 

[darrylglenda96]

Thanks. I found some information on another furum, besides the throttle body having sharp edges expecial by the iac. The opening for the EGR. Read where a guy filled his with cork. And solved it. I'll try all of those. Much appreciated

 

[Sparky714]

Thanks. I found some information on another furum, besides the throttle body having sharp edges expecial by the iac. The opening for the EGR. Read where a guy filled his with cork. And solved it. I'll try all of those. Much appreciated

Take a dremel and round the sharp edges of the iac holes. Worked for me.

 

[foxbodybill89]

I had a BBK 70mm and intake, smoothed the edges still whistled some. Put up with it for a couple years then went to an Accufab TB and power pipe, no more whistle. Good luck

 

[7991LXnSHO]

If it only whistles when the IAC should be working at idle and at first at low rpm, it is the the IAC passages. (Some other brand whistle, but BBK has sold a lot of them. Top line F#.) Whistling under acceleration does not make sense for the normal issue.
Have you used a stethoscope (or hose to your ear) to verify the location?

I would NOT glue anything that might get sucked into the engine in the IAC passages.

 

[General karthief]

Live with it, the ricers at the gas station will ask you how big your turbo is.
I can make mine whistle dixie,

 

[Essn95]

My BBK 70mm used to be quiet but about a year ago started whistling. I tried smoothing out the IAC to no avail. Doesn’t really bother me anymore, sounds just like a pro charger so there’s that! Mine also lets out a big breath of air on shutoff