Results 1 to 4 of 4

Thread: Warm Start Problem

  1. #1
    Junior Member
    Join Date
    May 2008
    Posts
    35

    Default Warm Start Problem

    Any suggestions where to start ... When my car is cold it starts like a champ and runs at the commanded AFR at idle and above and continues to do so even when at operating temp. If I drive the car and get it up to operating temp, turn it off, then attempt to restart a few minutes later, it doesn't want to start and shows a very lean reading. It then takes several restarts to get it running and then it has to (roughly) idle for a few more minutes to become driveable (enriched). Where should I begin with this? [In case you read my other post, this scenario occurs at a normal voltage level, not just a low-voltage.] Thanks for the suggestions.

    Bobby

    LSX 455 CUI
    Magnacharger 8.5 PSI
    1999 C5 PCM
    EFI Live custom 0S for Boost

  2. #2
    Lifetime Member
    Join Date
    Mar 2005
    Posts
    355

    Default

    usual cause intake temp heat soak in the table for IAC parked vs air intake temp under the idle heading.
    After 10 to 15 minutes IAT up to 50 to 60 deg and this table generally pulls out idle air as temp increases via the IAC.
    Simply log the car as i sits and note what the intake temp goes up to. crank up the G/s there by 2 g/s or so, reflash and try that

    MIke
    "Just a tune > yeah right !!!! "

  3. #3
    Junior Member
    Join Date
    May 2008
    Posts
    35

    Default

    I knew there was a genious lurking out there somewhere... Thanks for the suggestion. I'll give it a shot this weekend!

    Bobby

  4. #4
    Lifetime Member
    Join Date
    Mar 2005
    Posts
    355

    Default

    took me ages to find that one believe me! works every time though and with the magnacharger you will be surprised at the amount of heat soak in a short amount of time. When we fit cams only this table always needs adjusting as well for some reason.......
    Mike in New Zealand
    "Just a tune > yeah right !!!! "

Similar Threads

  1. Cold start perfect, Warm start flares high
    By samh_08 in forum Gen III V8 Specific
    Replies: 1
    Last Post: May 12th, 2009, 08:36 PM
  2. start problem with cammed c6zo6
    By chrleb2 in forum Gen IV V8 Specific
    Replies: 10
    Last Post: December 11th, 2008, 04:46 PM
  3. Cold start great but warm start sucks."Idle
    By mvvette97 in forum Gen III V8 Specific
    Replies: 11
    Last Post: October 25th, 2008, 11:22 PM
  4. Lean Cold Start Problem
    By swingtan in forum E37, E38 & E67 PFI ECM's
    Replies: 29
    Last Post: May 14th, 2008, 10:52 AM
  5. warm start issue
    By thomas walters in forum Gen IV V8 Specific
    Replies: 0
    Last Post: October 16th, 2007, 05:40 PM

Posting Permissions

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