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Downshifting while moving

Discussion in 'Performance and Tuning' started by bigpappa160, Dec 9, 2010.

  1. bigpappa160

    bigpappa160 [OP] Member

    Joined:
    Dec 9, 2010
    Member:
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    Slocomb, Al
    Vehicle:
    04 tacoma TRD off road
    I had this downshifting problem the other night. I was at a trafffic light light turned green gave it some gass got up around 20-25mph at the truck downshifted and then up shifted and it happen around 35mph also after I gave it some more gas it work fine. Then last night same thing happened downshifted around 20-25mph then upshifted but then the check engine light came on. Has anyone experienced this problem and if so what is the remedy? the truck is a 04 tacoma with 159k on it
     
  2. whippersnapper02

    whippersnapper02 Well-Known Member

    Joined:
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    Christian
    Yorba Linda, CA
    Vehicle:
    10 MGM TRD OR 4wd Auto DCSB
    Banks Monster Exhaust, Pop n Lock tailgate lock, Hook-Ups tie down brackets, USA Spec Ipod adaptor, WO seat covers, color matched grill with Grillcraft insert, Tuffy locking bed box
    Get a code reader and see what the code is first.
     
  3. bigpappa160

    bigpappa160 [OP] Member

    Joined:
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    Slocomb, Al
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    04 tacoma TRD off road
    where do you get a code reader and how does that work
     
  4. STravis

    STravis Well-Known Member

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    Travis
    Ruidoso, New Mexico
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    2012 TRD Offroad
    Autozone can read the codes for you.
     
  5. bigpappa160

    bigpappa160 [OP] Member

    Joined:
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    Slocomb, Al
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    04 tacoma TRD off road
    thank You but how does the code reader work does it hookup to the engine
     
  6. matthew5olson

    matthew5olson Well-Known Member

    Joined:
    Dec 21, 2008
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    #11782
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    First Name:
    matthew
    pittsburgh, PA
    Vehicle:
    04 ext cab 3.4L 5spd 4x4 sr5
    K&N cold air intake, doug thorley headers, rear sensor simulator, flowmaster 40 series, magnecor plug wires, Royal Purple synthetic gear lube, airaid throttle body spacer, Hyperground system, flex-a-lite elec fan.
    plugs in to a plug in front of the accelerator pedal. Autozone will know what to do.
     
  7. matthew5olson

    matthew5olson Well-Known Member

    Joined:
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    First Name:
    matthew
    pittsburgh, PA
    Vehicle:
    04 ext cab 3.4L 5spd 4x4 sr5
    K&N cold air intake, doug thorley headers, rear sensor simulator, flowmaster 40 series, magnecor plug wires, Royal Purple synthetic gear lube, airaid throttle body spacer, Hyperground system, flex-a-lite elec fan.
    but yes it does get its info from the ecu. takes a couple mins. nothing major. Its a diagnostic thing
     
  8. bigpappa160

    bigpappa160 [OP] Member

    Joined:
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    Slocomb, Al
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    04 tacoma TRD off road
    Thanks for the info, I'll get by there to day on the way home from work.
     
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