Results 1 to 4 of 4

Thread: LT1 / TH400 Stuck in Open Loop

  1. #1
    Super Moderator dave w's Avatar
    Join Date
    Feb 2011
    Posts
    6,268

    LT1 / TH400 Stuck in Open Loop

    I'm thinking the reason the LT1 / TH400 is stuck in Open Loop is due a faulty O2 sensor or sensor circuit (error code 63)? See attached files. Maybe there are other reasons the LT1 / TH400 is stuck in open loop, but error 63 needs to be fixed before going any further?

    Currently the .eedata file format is not recognized. I'll need to ping 1project2many to update .eedata as downloadable files.

    dave w
    Attached Files Attached Files

  2. #2

  3. #3

  4. #4
    Fuel Injected!
    Join Date
    Mar 2013
    Posts
    1,470
    It does goes to open loop if the DTC is set.
    Here is some info that might help you for quick fix.
    Attached Images Attached Images

Similar Threads

  1. Replies: 3
    Last Post: 09-06-2016, 05:06 PM
  2. Open loop afr
    By myburb in forum GM EFI Systems
    Replies: 10
    Last Post: 07-14-2016, 05:05 AM
  3. Open to closed loop
    By myburb in forum GM EFI Systems
    Replies: 0
    Last Post: 05-20-2016, 11:43 PM
  4. Anyone else run open loop all the time
    By myburb in forum GM EFI Systems
    Replies: 7
    Last Post: 01-02-2016, 02:32 AM
  5. EE open loop idle
    By steveo in forum GM EFI Systems
    Replies: 17
    Last Post: 01-28-2014, 03:41 AM

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
  •