LT1 Based Engine Tech 1993-1997 LT1/LT4 Engine Related

How to set IAC

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Old Aug 16, 2005 | 02:25 AM
  #1  
Steves396lt1
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How to set IAC

Putting in new IAC, need to know how to set it. Pinion depth, counts after start up? This is in a 396 with 230 degree duration cam idleing around 950. ANy help would be appreciated.
1993 Motor with 58mm T Body.
Old Aug 16, 2005 | 02:36 AM
  #2  
JP94Z's Avatar
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From: Florida
Re: How to set IAC

See if this from Shoebox's site answers your question. Or are you talking about actually setting a value in the ECM?
Old Aug 16, 2005 | 06:30 PM
  #3  
Steves396lt1
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Re: How to set IAC

I am talking about when you get a new one, what are the mesurements and procedure for putting one in. ALso, what counts should be read when running hot and cold.
Old Aug 16, 2005 | 10:06 PM
  #4  
T/A KID's Avatar
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From: Arkansas
Re: How to set IAC

Go to Golen engine service (website) they have a write up on how to do this I believe.
Old Aug 16, 2005 | 11:05 PM
  #5  
Steves396lt1
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Re: How to set IAC

Thanks. Which way do you go to increase voltage.
Old Aug 16, 2005 | 11:09 PM
  #6  
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Re: How to set IAC

Originally Posted by Steves396lt1
Thanks. Which way do you go to increase voltage.
Increase voltage on the IAC? Are you sure you are not referring to something else?

Reference for counts can be found here (courtesy of Injuneer).

Last edited by shoebox; Aug 16, 2005 at 11:11 PM.
Old Aug 16, 2005 | 11:10 PM
  #7  
Steves396lt1
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Re: How to set IAC

I went to the Golen website, and they have you open the throtle blades for better idle, but you need to adjust the TPS, which mine is adjustable, to compensate for opening the blades, so you need to go down/up depending on what happens
Old Aug 16, 2005 | 11:13 PM
  #8  
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Re: How to set IAC

I assume you will be watching voltage while you adjust, so just turn it whichever way makes the change you desire.
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