Results 1 to 8 of 8

Thread: Looking for cause of high idle in Datalog

Hybrid View

Previous Post Previous Post   Next Post Next Post
  1. #1
    Carb and Points!
    Join Date
    Mar 2014
    Posts
    6
    Thanks Dave W. Being a newbie at it I'm wrapping my head around understanding the adx/xdf, what they do and which to use. I'll load them up, do a log and repost if that's what you're suggesting I do?

  2. #2
    Super Moderator dave w's Avatar
    Join Date
    Feb 2011
    Posts
    6,346
    The .xdf is used to edit the .bin file (chip file).
    The .adx is used to data log with.

    You can use the patches in the .xdf file to edit the AFTK .bin file so the spark advance and injector pulse width will show up in the data log.

    dave w

  3. #3
    Carb and Points!
    Join Date
    Mar 2014
    Posts
    6
    Done, thanks. Now to get a day off to datalog! BTW, for highway spark advance, to add 2 degrees, which table do I adjust?
    I see 2 very similar tables and I don't understand the difference:
    "SA - HiWay Lean Cruise Spark Added"
    "HiWay - HiWay Lean Cruise Spark Added"

  4. #4
    Carb and Points!
    Join Date
    Mar 2014
    Posts
    6
    so here's a log file from today. I still get a little bit too much idle in park/neutral after driving. I'm looking for 750-800 rpm and its in the 900 range. Any ideas?

  5. #5
    Carb and Points!
    Join Date
    Mar 2014
    Posts
    6
    So I finally figured out that the park/run IAC offset was too low and added a few steps. Now it idles at 765 regardless of gear selector position. I guess with it too low, the ECM was giving almost as much air in park/neutral as it was in drive, causing the park/neutral idle to be too high. I enjoy learning on my own, but sometimes a little bump in the right direction is helpful...
    Please chime in if I'm misunderstanding how that offset was affecting things.

  6. #6
    Fuel Injected!
    Join Date
    Jul 2019
    Location
    Gilbert, AZ
    Age
    55
    Posts
    30
    Good Morning sgtbilkodle,
    Could you go into more detail on how you corrected this issue? I've been having the same issue and everything I try doesn't help. Thank you, Jason

Similar Threads

  1. 1995 454 High idle
    By Xenon in forum GM EFI Systems
    Replies: 12
    Last Post: 01-03-2015, 02:41 PM
  2. Help with sporadic high idle
    By Sla90lx in forum GM EFI Systems
    Replies: 28
    Last Post: 09-29-2013, 03:50 AM
  3. Replies: 53
    Last Post: 08-04-2013, 05:52 PM
  4. Replies: 3
    Last Post: 09-20-2012, 03:09 AM
  5. High idle speed
    By CDeeZ in forum GM EFI Systems
    Replies: 27
    Last Post: 07-06-2012, 01:35 AM

Tags for this Thread

Bookmarks

Posting Permissions

  • You may not post new threads
  • You may not post replies
  • You may not post attachments
  • You may not edit your posts
  •