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

extreme rev when starting???

Discussion in '4 Cylinder' started by buckstaco, Nov 19, 2009.

  1. Nov 19, 2009 at 4:04 AM
    #1
    buckstaco

    buckstaco [OP] Member

    Joined:
    Jan 7, 2009
    Member:
    #12327
    Messages:
    21
    Gender:
    Male
    independence,ky
    Vehicle:
    06 tacoma
    none
    When starting my 2006 it will rev extremely high, one day going over 2000 rpms it appears the colder it is the worse it gets. Dealership say this is normal, but high rpm on a cold engine can't be good. Any comments appreciated....
     
  2. Nov 19, 2009 at 4:15 AM
    #2
    T@co_Pr3runn3r

    T@co_Pr3runn3r XXXXXXXXXXXXXXXXXXX

    Joined:
    Jan 20, 2009
    Member:
    #12767
    Messages:
    11,932
    Gender:
    Male
    <----------------->
    Vehicle:
    08 RC Prerunner SR5
    Mine used to do it bad. Was bought certified used but guess what? Fucking dealer just left all the autolite bullshit in it just like they got it. Oil filter, battery & plugs all autolite. Plugs were at least 1/4" shorter than the Denso iridiums that are spec'd for the 2.7l. Anyway, after puttin the correct plugs in it, the startup idle stopped being all crazy, truck ran much smoother & better overall, better mpg. Just something you might check on.
     
  3. Nov 19, 2009 at 6:06 AM
    #3
    91r100gs

    91r100gs Understand the Voice Within

    Joined:
    Apr 21, 2008
    Member:
    #6100
    Messages:
    655
    Gender:
    Male
    First Name:
    Dan
    Kansas City area
    Vehicle:
    '08 Impluse Red SR5 I-4
    Factory bed mat, TacomaWorld.com sticker, EGR In-Channel Vent Visors, AFE ProDryS drop in air filter
    This is normal from many threads started on this same subject will bear out. As the ambient temperature drops, the ECU will run the engine faster to speed warmup and reduce emissions. One reason they can do this is the use of lighter weight oils, such as 5 and 0w-20, which speed oil flow to the cyl head area. The pour point on these oils is usually in the -40 degree range. Mine has seen as high as 2500 RPM on starts around 0 degrees.
     
  4. Nov 19, 2009 at 7:30 AM
    #4
    08pretaco

    08pretaco Almost there

    Joined:
    Sep 26, 2008
    Member:
    #9502
    Messages:
    9,059
    Gender:
    Male
    First Name:
    Oliver
    az
    Vehicle:
    2014 Tundra 4x4 CM 5.7L SR5
    AFE pro dry s, Husky X-act Contour
    when i went camping the other weekend and it snowed and hailed on us, the next morning it took a sec to turn over and when it did the rpm's were well over 2500, just stuck it in 1st and it drove itself
     
  5. Nov 19, 2009 at 9:21 AM
    #5
    T@co_Pr3runn3r

    T@co_Pr3runn3r XXXXXXXXXXXXXXXXXXX

    Joined:
    Jan 20, 2009
    Member:
    #12767
    Messages:
    11,932
    Gender:
    Male
    <----------------->
    Vehicle:
    08 RC Prerunner SR5
    The difference in temperatures at startup making the ecu rev more when colder & less when warmer is fully understood (only speaking for me). There is a point when it's beyond reason tho. Mine did it regardless of temp & the fact that the plugs were physically 1/4" or more shorter in the cylinder was freaking the ecu out is different situation. With the correct plugs it now acts as it should & as you've explained. Not sure how far out of reason or not it is for the OP.
     
  6. Nov 19, 2009 at 1:03 PM
    #6
    buckstaco

    buckstaco [OP] Member

    Joined:
    Jan 7, 2009
    Member:
    #12327
    Messages:
    21
    Gender:
    Male
    independence,ky
    Vehicle:
    06 tacoma
    none
    Thanks a lot, I just couldn't get myself to believe that it was planned and normal. Again Thanks to everyone for the information and Help....
     
  7. Nov 19, 2009 at 1:04 PM
    #7
    buckstaco

    buckstaco [OP] Member

    Joined:
    Jan 7, 2009
    Member:
    #12327
    Messages:
    21
    Gender:
    Male
    independence,ky
    Vehicle:
    06 tacoma
    none
    One more thing, will Toyota authorize 0w30 oil in the vehicle?????
     
  8. Nov 19, 2009 at 2:19 PM
    #8
    chris4x4

    chris4x4 With sufficient thrust, pigs fly just fine. Moderator

    Joined:
    May 8, 2008
    Member:
    #6497
    Messages:
    106,154
    Gender:
    Male
    First Name:
    FlimFlubberJAM
    Tenoe, AZ
    Vehicle:
    2013 Rubicon Unlimited,
    4.10 gears, sliders, and lots of buttons.
    If the book says 5w-30, then 0w-30 is fine in cold weather.
     
To Top