Page 2 of 3 FirstFirst 123 LastLast
Results 11 to 20 of 29

Thread: E38 VATS Non-start

  1. #11
    Lifetime Member
    Join Date
    Mar 2009
    Posts
    259

    Default

    Quote Originally Posted by joecar View Post
    Log the pid GM.VTD during cranking.
    Those logs have VTD, or were you referring to future logs?

    Quote Originally Posted by slows10 View Post
    The only Ls2 engine to use a 58x reluctor in 2006 was just the corvette I believe. If the engine came from any other car it is 24x and the e38 ecm is not setup to operate 24x.
    Pretty sure it is gray, but Ill double check.
    00 Silverado Z71, LQ9 w/ LS3 heads, BTR cam, Whipple 2.9@8#, 4l80E

  2. #12
    Joe (Moderator) joecar's Avatar
    Join Date
    Apr 2003
    Posts
    28,403

    Default

    I must have missed in the logs, let me look again.
    Last edited by joecar; September 6th, 2016 at 12:09 PM.

  3. #13
    Lifetime Member
    Join Date
    Mar 2009
    Posts
    259

    Default

    Great thank you. Let me knowing you see anything. Getting ready to pull my hair out! Lol
    00 Silverado Z71, LQ9 w/ LS3 heads, BTR cam, Whipple 2.9@8#, 4l80E

  4. #14
    Lifetime Member GMPX's Avatar
    Join Date
    Apr 2003
    Posts
    13,148

    Default

    Quote Originally Posted by LastCall View Post
    So I have been trying to get an LS2 going into a 1970 Camaro. The issue is that it cranks, starts up and revs to about 1500 rpm, sputters, and then dies. Each start, it runs for less time until it just cranks. I think it is VATS. Fuel pressure was solid. If you give it any gas, the engine dies immediately. APP and ETCTP seem fine, they both respond to throttle input with engine off.
    VATS on E38 kills spark and fuel instantly, it won't do anything more than crank, if it fires and does run for a bit then it won't be VATS.
    Someone with more knowledge on conversions than me might chime in but I don't think it is a good idea to mix and match different year model parts.

    2006 LS2
    2007 TBSS Throttle Body (silver blade)
    2010 Camaro SS Accelerator Pedal Assembly

    I don't know if that 2010 Pedal will play nice with the TB throttle. I think Erik is on to it with his post.
    I no longer monitor the forum, please either post your question or create a support ticket.

  5. #15
    Lifetime Member
    Join Date
    Mar 2009
    Posts
    259

    Default

    Quote Originally Posted by GMPX View Post
    VATS on E38 kills spark and fuel instantly, it won't do anything more than crank, if it fires and does run for a bit then it won't be VATS.
    Someone with more knowledge on conversions than me might chime in but I don't think it is a good idea to mix and match different year model parts.

    2006 LS2
    2007 TBSS Throttle Body (silver blade)
    2010 Camaro SS Accelerator Pedal Assembly

    I don't know if that 2010 Pedal will play nice with the TB throttle. I think Erik is on to it with his post.
    Thanks for chiming in GMPX.

    We have the truck pedal installed and the truck TB is on its way. We will now have a truck ECM/OS, pedal, and TB.

    Crossing fingers!!
    00 Silverado Z71, LQ9 w/ LS3 heads, BTR cam, Whipple 2.9@8#, 4l80E

  6. #16
    Lifetime Member
    Join Date
    Mar 2006
    Posts
    4,935

    Default

    Quote Originally Posted by LastCall View Post
    Thanks for chiming in GMPX.

    We have the truck pedal installed and the truck TB is on its way. We will now have a truck ECM/OS, pedal, and TB.

    Crossing fingers!!
    Let us know, hope it's that easy. It sucks these later parts cant be interchanged as easily as before. Makes swapping and conversions more tricky (and expensive!).
    ~Erik~
    2013 Sonic RS Manual - 1.4L I4T E78, tuned, turbo mods, etc.
    2008 TrailBlazer SS 3SS AWD Summit White - LS2 E67/T42, bolt ons, suspension, etc.
    2002 Chevy TrailBlazer LT 4X4 Summit White - 4.2L I6 P10, lifted, wheels, etc.

  7. #17
    Lifetime Member
    Join Date
    Mar 2009
    Posts
    259

    Default

    No luck!

    TB did not change anything.

    Thoughts anyone?
    00 Silverado Z71, LQ9 w/ LS3 heads, BTR cam, Whipple 2.9@8#, 4l80E

  8. #18
    Lifetime Member GMPX's Avatar
    Join Date
    Apr 2003
    Posts
    13,148

    Default

    Ok, if the engine is shutting down the ECM must be setting some sort of DTC, is it?
    Do you have a MAF fitted? If not then DO NOT disable the MAF DTC's, they must remain active.
    I no longer monitor the forum, please either post your question or create a support ticket.

  9. #19
    Lifetime Member
    Join Date
    Mar 2009
    Posts
    259

    Default

    Here are the DTCs on most of the logs.

    P0650
    U0121
    U0140

    Yes, MAF is fitted. DTCs for MAF are enabled.

    Did anything stand out in the tune or logs that would suggest VATS are enabled and functioning?
    Last edited by LastCall; August 30th, 2016 at 12:23 PM.
    00 Silverado Z71, LQ9 w/ LS3 heads, BTR cam, Whipple 2.9@8#, 4l80E

  10. #20
    Lifetime Member
    Join Date
    Mar 2006
    Posts
    4,935

    Default

    P0650 is a bit concerning, the ECM is trying to turn on the SES/MIL and either cant or it's on all the time...

    Lost comms with the BCM (not surprising) and lost comms with the EBCM (again not surprising).

    As Ross said, if VATS is still active it wont ever start, since it is then VATS are ok.

    Where is the ECM from? If it's not a brand new unit, was it flashed with an incompatible OS than what was originally flashed? (This isnt likely as the service # and OS # match.)

    With all the truck stuff installed, does it behave the same way as before? Starts, revs to 1500, back down, any pedal kills it? Have you verified the pedal wiring is correct for the truck pedal?
    ~Erik~
    2013 Sonic RS Manual - 1.4L I4T E78, tuned, turbo mods, etc.
    2008 TrailBlazer SS 3SS AWD Summit White - LS2 E67/T42, bolt ons, suspension, etc.
    2002 Chevy TrailBlazer LT 4X4 Summit White - 4.2L I6 P10, lifted, wheels, etc.

Page 2 of 3 FirstFirst 123 LastLast

Similar Threads

  1. E38 ECM VATS question
    By Brads_rs in forum E37, E38 & E67 PFI ECM's
    Replies: 5
    Last Post: July 21st, 2014, 04:11 AM
  2. E38 VATS will not disable
    By v8vegaman in forum E37, E38 & E67 PFI ECM's
    Replies: 43
    Last Post: March 16th, 2010, 02:29 PM
  3. 09 E38 VATS Not Working
    By gmh308 in forum E37, E38 & E67 PFI ECM's
    Replies: 6
    Last Post: March 14th, 2010, 12:35 PM
  4. E38 cant disable VATS
    By minytrker in forum E37, E38 & E67 PFI ECM's
    Replies: 30
    Last Post: October 30th, 2009, 03:43 PM
  5. !VATS for remote start
    By warscout2 in forum Gen III V8 Specific
    Replies: 8
    Last Post: January 19th, 2007, 06:34 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
  •