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This is to post your solutions to various issues such as re-routing idle air pathways, location of PCV Connections, and anything else that benefits The Gadgetman Groove modification.
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TOPIC: IAC mod Theory

IAC mod Theory 23 Sep 2016 14:39 #1

  • Tracy Gallaway
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OK, I'm going to cross-link here to a post I made in another thread.

The post is my ideas and theory re: the Idle Air Control or IAC restriction mod.

Look in Category: Other Stuff.

thread is: Dan Merrick's Fuel Vaporiser and MPG recipe

post is: post # 22 page 2

This came up in the middle of yet another long wind discussion of things. So often nuggets of info get buried in a long thread. IF you are wanting to know more on the IAC Mod, this might help.








Tracy G
Tracy Gallaway
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Gadgetman Reno, NV
The following user(s) said Thank You: GregK

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Last edit: by Tracy Gallaway. Reason: add link to another posting

IAC mod Theory 27 Sep 2016 19:25 #2

  • GregK
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TracyG wrote: So often nuggets of info get buried in a long thread.


Agreed! Posts like this, pulling the wheat from the chaff, also help clarification for future readers, and boost search engine hits too.
Greg Kusiak
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Audiophile

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IAC mod Theory 26 Oct 2016 18:10 #3

  • Tracy Gallaway
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Bump the post!

Tracy G
Tracy Gallaway
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IAC mod Theory 29 Jun 2022 11:19 #4

  • Ken Bittle
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Looking for information on a 4.6 liter 2 valve ford engine. Is this IAC mod the same as the chevy tbi's? Are we just taking a 1/2" hole and trying to remake a metal gasket to reduce this down to an 1/8" hole?

Ken

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IAC mod Theory 29 Jun 2022 20:40 #5

  • Tracy Gallaway
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Hi Ken, the Chevy TBI and the Ford 4.6L are very different. I personally have never had, or heard of, good results from trying to restrict these Ford IAC valves. Ron, years ago spoke of making the metal plate out of a thin piece of aluminum sheet, and drilling a 1/8" hole in it to restrict the IAC airflow. I've just left the Ford IAC's alone.

I usually use epoxy techniques to restrict IAC flow on TB's where the IAC is integral on the TB. Where there is a passageway or port the IAC air goes through, like many older Gm TB's, and some Asian import ones
:cheer: :cheer: .
good to hear from ya, Ken!

Tracy G.
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IAC mod Theory 30 Jun 2022 13:59 #6

  • Ken Bittle
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Thank you Tracy, i will give the gasket a shot and see what happens.

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