Results 1 to 4 of 4

Thread: VE tuning. What is my IAC supposed to do?

  1. #1
    Tuner
    Join Date
    Aug 2012
    Location
    Terre Haute, IN
    Posts
    55

    What is my IAC supposed to do while accelerating?

    I have started over my VE tuning now that I have a wideband
    During my first log today I noticed my IAC is following my RPM's.
    Is it supposed to do this?
    Wouldn't this mess with what I am doing here?
    Attached Files Attached Files
    Last edited by aldrichg9; 03-05-2013 at 12:36 PM.
    2002 1500HD Cast Iron 6.0, ISKY Cam 218/218 110 lsa, Pace Setter LT's, and some other goodies too...

  2. #2
    Tuner
    Join Date
    Aug 2012
    Location
    Terre Haute, IN
    Posts
    55
    My VE is also obviously quite screwy and I dont have a stock tune. I bought this truck this way.
    Here is one after I pasted some of the error from that log and brought over some stock VE from another tune.

    My question is - is my IAC acting the way it should and if not is that skewing what I am doing?




    EDIT: Whoa. That was a disaster. Would Barely run that way it idled around 21 AFR
    Going to trying a stock VE table and start over - again
    Last edited by aldrichg9; 03-05-2013 at 10:45 AM.
    2002 1500HD Cast Iron 6.0, ISKY Cam 218/218 110 lsa, Pace Setter LT's, and some other goodies too...

  3. #3
    Tuner
    Join Date
    Aug 2012
    Location
    Terre Haute, IN
    Posts
    55
    I have been searching all over and looking for this.
    I am looking for what the IAC is supposed to do when not at idle.
    I thought it was supposed to close, but I can't find anything telling me this.
    2002 1500HD Cast Iron 6.0, ISKY Cam 218/218 110 lsa, Pace Setter LT's, and some other goodies too...

  4. #4
    Advanced Tuner
    Join Date
    Jun 2012
    Posts
    225
    The iac counts change with throttle. They go up the more you open the throttle.