whistle at idle fixed

charliebucket · April 25th, 2009, 12:42 PM

after some investigative work, i removed the throttle body with iac still attached. i shined a flashlight at front and back of throttle plate at the holes for the iac and saw that they were a half of a hole off. did a port match by grinding the throttle body holes to match the ford iac and ta -daaa, no more whistle. i even checked my last intake set up which also whistled ( cobra intake, with holley throttle body, ford iac ) and saw that those holes werent lined up perfectly either. must be that there isnt much precision work to stamping these out. should have probably gone with an accufab. hope this helps at least one person out there.

1slo5.0 · April 25th, 2009, 08:47 PM

Cool, glad you figured it out. I learned something new as well.

Nice 5.0 · April 25th, 2009, 08:55 PM

Ill have to look at mine. I thought the whistle couldn't be fixed either. I thought I had a vacuum leak also when i first put on my throttle body.

Chris951 · April 25th, 2009, 09:08 PM

I don't have a whistle with my bbk?

charliebucket · April 28th, 2009, 08:11 PM

yeah, i guess its kind of a crap-shoot for how good of a matched part youre gonna get when everything on all of our cars is aftermarket.

April 25th, 2009, 12:42 PM	#1
charliebucket Newbie 1989 gt 347 Join Date: Apr 2009 Location: central new york Posts: 8	whistle at idle fixed after some investigative work, i removed the throttle body with iac still attached. i shined a flashlight at front and back of throttle plate at the holes for the iac and saw that they were a half of a hole off. did a port match by grinding the throttle body holes to match the ford iac and ta -daaa, no more whistle. i even checked my last intake set up which also whistled ( cobra intake, with holley throttle body, ford iac ) and saw that those holes werent lined up perfectly either. must be that there isnt much precision work to stamping these out. should have probably gone with an accufab. hope this helps at least one person out there. __________________ dont smell it, just suck it

April 25th, 2009, 08:47 PM	#2
1slo5.0 Zippee is my step sister. 1990 Mustang LX 9.36@143 mph Join Date: Jan 2006 Location: Fond du Lac, Wisconsin Posts: 10,356	Cool, glad you figured it out. I learned something new as well. __________________ Thanks to: Trick Flow, Team Z Motorsports, Total Engine Airflow and Furo Racecraft My daily driver has 16 cylinders and 4400hp @ 1000 rpm....

April 25th, 2009, 09:08 PM	#4
Chris951 Hardcore Enthusiast 1988 T-top 5.0 Join Date: Aug 2007 Location: Mesa, AZ Posts: 1,510	I don't have a whistle with my bbk? __________________ 1988 LX T-top 5.0: 70mm BBK Throttle Body 4.10 gears BBK shorties, Pypes O/R X-pipe, Dumped Flowpaths Pro 5.0 shifter

April 28th, 2009, 08:11 PM	#5
charliebucket Newbie 1989 gt 347 Join Date: Apr 2009 Location: central new york Posts: 8	yeah, i guess its kind of a crap-shoot for how good of a matched part youre gonna get when everything on all of our cars is aftermarket. __________________ dont smell it, just suck it

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April 25th, 2009, 08:55 PM	#3
Nice 5.0 Regular 1993 12.9 @ 105 Join Date: Jan 2007 Location: Raleigh NC Posts: 299	Ill have to look at mine. I thought the whistle couldn't be fixed either. I thought I had a vacuum leak also when i first put on my throttle body.

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