1. Welcome to Tacoma World!

    You are currently viewing as a guest! To get full-access, you need to register for a FREE account.

    As a registered member, you’ll be able to:
    • Participate in all Tacoma discussion topics
    • Communicate privately with other Tacoma owners from around the world
    • Post your own photos in our Members Gallery
    • Access all special features of the site

wondering what the scan guage ign is reading in my 3rz

Discussion in '1st Gen. Tacomas (1995-2004)' started by Stout890, Dec 21, 2011.

  1. Dec 21, 2011 at 8:16 PM
    #1
    Stout890

    Stout890 [OP] Well-Known Member

    Joined:
    May 8, 2011
    Member:
    #56287
    Messages:
    511
    Gender:
    Male
    First Name:
    Jason
    Rosamond ca
    Vehicle:
    99 prerunner sr5
    HID head lights, fagtech coil overs and an AAL, gay ass 2 inch body lift (soon to be removed) taneau cover, k&n intake, soon to have an axle swap with a E locker
    so i gt a scan gauge for an early Christmas gift and iv been loving it.
    but i was scanning through the gauges and was noticing my IGN gauge was reading about 7-8 while in park and than went up to 20+ while driving..
    what exactly is that reading? i know my manual says its the ignition timing but i didn't think the 3rz had the variable timing advance so why the fluctuation?
     
  2. Dec 21, 2011 at 8:21 PM
    #2
    worthywads

    worthywads Well-Known Member

    Joined:
    Jun 25, 2011
    Member:
    #58841
    Messages:
    4,139
    Gender:
    Male
    Peoples Republic of Boulder
    Vehicle:
    05 5-lug access I4 Stick, 70 Challenger Vert
    All engines change timing, used to be mechanical and vacuum, now the computer does it.
     
  3. Dec 21, 2011 at 8:31 PM
    #3
    Stout890

    Stout890 [OP] Well-Known Member

    Joined:
    May 8, 2011
    Member:
    #56287
    Messages:
    511
    Gender:
    Male
    First Name:
    Jason
    Rosamond ca
    Vehicle:
    99 prerunner sr5
    HID head lights, fagtech coil overs and an AAL, gay ass 2 inch body lift (soon to be removed) taneau cover, k&n intake, soon to have an axle swap with a E locker
    so than whats so special about the vvti?
    or am i getting valve timing and ignition timing confused?
     
  4. Dec 22, 2011 at 5:35 AM
    #4
    worthywads

    worthywads Well-Known Member

    Joined:
    Jun 25, 2011
    Member:
    #58841
    Messages:
    4,139
    Gender:
    Male
    Peoples Republic of Boulder
    Vehicle:
    05 5-lug access I4 Stick, 70 Challenger Vert
  5. Dec 22, 2011 at 5:41 AM
    #5
    98tacoma27

    98tacoma27 is gooder 'en chicken Moderator

    Joined:
    Dec 18, 2008
    Member:
    #11714
    Messages:
    49,839
    Gender:
    Male
    First Name:
    Ben
    Beech Creek
    Vehicle:
    05 Tundra SR5 (+250k AND COUNTING), 88 SR5 PU (SOLD), 98 TRD OR (CRUSHED)
    5100's all on fours
    x2

    VVTi changes the cam shafts positions physically, meaning it changes when the valves open/close in relation to crank shaft rotation. Variable Ignition Timing changes when the spark is sent to the plug.
     
  6. Dec 28, 2011 at 7:05 AM
    #6
    Stout890

    Stout890 [OP] Well-Known Member

    Joined:
    May 8, 2011
    Member:
    #56287
    Messages:
    511
    Gender:
    Male
    First Name:
    Jason
    Rosamond ca
    Vehicle:
    99 prerunner sr5
    HID head lights, fagtech coil overs and an AAL, gay ass 2 inch body lift (soon to be removed) taneau cover, k&n intake, soon to have an axle swap with a E locker
    Ok that's cool I never knew ignition timing advanced. I am an aircraft mechanic and have never heard of that, although I haven't worked on an engine since a&p school and those were simple piston powered engines with stationary timing.
     
To Top