Results 1 to 9 of 9

Thread: Ls Swap Wont stay runnung

  1. #1
    Tuner in Training
    Join Date
    Oct 2011
    Posts
    22

    Ls Swap Wont stay runnung

    Hi Guys,
    New to tuning, finally finished up my S10 LQ9/LS2 -4L80 Swap but she wont stay running she kicks off and starts and on occasion will run for say 10-15 seconds with me revving a bit but dies after and wont re start. Vats is off, Checked all of my grounds and connections. Fuel pressure 58lb, 12V @coils pulled plug getting spark I've included a scan and tune.
    Questions:
    will she run without oil pressure sender was told yes
    My MAF is from Zo6 Vette unscreened is that a problem 25168491
    Map sensor 16212460
    O2 from 2000 Corvette
    All other sensors are stock LQ9 2000

    LQ9 with 799 heads 04 ZO6 Cam LS2 Intake and 90mm Throttle body
    Attached Files Attached Files
    Last edited by John2948; 11-02-2014 at 01:11 PM.

  2. #2
    Advanced Tuner Cyrperformance's Avatar
    Join Date
    Apr 2014
    Location
    Haines City, Florida
    Posts
    325
    What injectors are you running?

    2006 Escalade LMM Duramax Tuned
    2000 S10 Twin Turbo 6.0L
    56 GMC 100 Status Unknown

  3. #3
    Tuning Addict 5FDP's Avatar
    Join Date
    May 2012
    Location
    Rogers, MN
    Posts
    13,533
    You will want a screen on the MAF and you will want to correct MAF data if you swapped the style/size of the MAF sensor.
    2016 Silverado CCSB 5.3/6L80e, not as slow but still heavy.

    If you don't post your tune and logs when you have questions you aren't helping yourself.

  4. #4
    Tuner in Training
    Join Date
    Oct 2011
    Posts
    22
    HI, I'm running stock LS2 Injectors

  5. #5
    Tuner in Training
    Join Date
    Oct 2011
    Posts
    22
    So for my MAF I need a different calibration then what I currently have, I can search that here and compare to what I have and change it. I did try using a stock 01 Corvette MAF which I had at the shop and it made no difference in the way it tried to start

  6. #6
    Tuner in Training
    Join Date
    Oct 2011
    Posts
    22
    OK very strange I was told to try turning off column lock in my current file and do a write entire and she fired up and ran, I now have a surging problem,lol. The motor starts and runs now but wont idle well needs tip in with foot and surges. Including a scan file
    Attached Files Attached Files

  7. #7
    Tuner in Training
    Join Date
    Oct 2011
    Posts
    22
    My current MAF file is the same as 2002 ZO6 unscreened and from what I'm told correct, Let me know please.

  8. #8
    Senior Tuner
    Join Date
    Feb 2009
    Posts
    1,931
    Your maf is your issue. It's going to max in your cranking log. Unplug it, set high rpm disable to max and I bet it will start and run.

  9. #9
    Tuner in Training
    Join Date
    Oct 2011
    Posts
    22
    Thank you very much for your input. I will try that tomm and see what happens. So everything else looks normal, this is all new to me but want to learn as much as I can here.