Thread: IAC Control.
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Old 07-24-2013   #4
XfireZ51
 
Join Date: May 2007
Location: Chicagoland, IL
Posts: 9,686
Default Re: IAC Control.

Quote:
Originally Posted by Tyler Townsley View Post
What controls the IAC in the calibration? My much modified 90 will not idle down until you come to a complete stop. When I let off the gas and coast to a stoplight the idle is 1700 or so until I come to a complete stop. I tried the ISC counts vs MPH parameter but it made no difference. Is there another parameter I am missing?

Tyler
Tyler,

Besides the IAC count v MPH, there are decay rate and delays in the calibration.
Also Constants and Tables for Throttle Follower. The LT-5 is an "unstable" motor meaning it reacts quickly to changes, which can be a good thing. However, it can react too quickly and we see the motor stalling or going into some kind of oscillation. Particularly true w modded motors. I use these parameters and others to tame these tendencies.
One that I recently have worked on is the idle SA. Lowered it. You may also want to look at what MPH you go to Closed Throttle SA. Increasing that helps also.
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