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Trans question

Discussion in '1st Gen. Tacomas (1995-2004)' started by jlr23402003, Mar 28, 2008.

  1. Mar 28, 2008 at 8:41 AM
    #1
    jlr23402003

    jlr23402003 [OP] New Member

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    what automatic transmission came in the 01 v6 models?
     
  2. Mar 28, 2008 at 9:26 AM
    #2
    humanoid

    humanoid bite me

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    I had a '99 Xtra Cab PreRunner SR5 V6
    Can you be a bit more specific in your question? Are you asking about the gear ratios? The name of the tranny? What are you asking? They either came in a 4 speed auto or a 5 speed manual.
     
  3. Mar 28, 2008 at 10:00 AM
    #3
    jlr23402003

    jlr23402003 [OP] New Member

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    Im asking about the 4 speed automatic. I was wondering what the name of it was. Like GM has a 700R4 trans what is the listing for the 4 speed Toyota. Im interested in getting a gearvendor over/underdrive unit and i wanted to know if they supply one for this trans or if i would have to modify one
     
  4. Mar 28, 2008 at 2:23 PM
    #4
    humanoid

    humanoid bite me

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    I had a '99 Xtra Cab PreRunner SR5 V6
    Got this from wikipedia: The 3.4 V6's manual transmission was an R150F while the automatic transmission was an A340F (Asian code is 30-40LE).

    Does that help you?
     
  5. Mar 28, 2008 at 4:33 PM
    #5
    glassdoc

    glassdoc Well-Known Member

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    Spring City, PA 19475
    Vehicle:
    04 DubCab 260,000 miles
    Stubbs Sliders, 2.5" lift, Ken-Mtn Bumpers, Leather Seats, AM/FM/CD/DVD & CB, IP Trans-Upgrade, (2) Trans Coolers, Synthetics Thru-out
    A340- 93 & up, A340e-electronic, A340f, A340h, several versions depending on age/model etc..
     
  6. Mar 28, 2008 at 4:40 PM
    #6
    glassdoc

    glassdoc Well-Known Member

    Joined:
    Mar 22, 2008
    Member:
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    Spring City, PA 19475
    Vehicle:
    04 DubCab 260,000 miles
    Stubbs Sliders, 2.5" lift, Ken-Mtn Bumpers, Leather Seats, AM/FM/CD/DVD & CB, IP Trans-Upgrade, (2) Trans Coolers, Synthetics Thru-out
    The Evolution of the A340

    Don Cottrell, TransTec Product Technician
    Aisin Warner has produced the
    A340 series transmission for
    over a decade. It was first introduced
    in 1985 for the Toyota Pickup and 4-
    Runner line. In a two-wheel drive
    version, its designation is A340E. Its
    four-wheel drive version used from
    1985-94 is designated A340H. The
    “H” suffix led some builders to think it
    stood for hydraulically-shifted transmission,
    but what it really represents is
    that it is coupled to a hydraulic transfer
    case, instead of a mechanical one. The
    transmission is electronically shifted in
    both the A340E and the A340H.
    Pleased with the durability of the
    Aisin Warner A340E transmission,
    Toyota added it to the Supra line in
    1986. Aisin Warner felt so successful
    with the performance of their transmission
    that they began to market it to
    other automakers.
    The first auto manufacturer in the
    states that started fitting the A340
    series into their own line of trucks and
    sport utilities was Chrysler Corporation.
    The A340 series of transmissions
    produced for Chrysler was designated
    AW-4. This unit was used in all 4.0
    litre, two-wheel drive and four-wheel
    drive Jeep Wagoneers, Cherokees,
    Grand Cherokees and Comanches. The
    only exception was the 1994-98 Grand
    Cherokee, which used the A500.
    Chrysler took a different approach
    to their four-wheel drives. They went
    with a mechanical transfer case instead
    of a hydraulic unit like the 1985-94
    Toyota four-wheel drives. This was
    usually a less costly repair, because
    you could separate the transfer case
    from the transmission just by unbolting
    it from the transmission’s adapter
    housing. In Toyota four-wheel drives,
    on the other hand, you had to disassemble
    the transfer case to get to the
    bolts that held it to the transmission. To
    do the early Toyotas right, you have to
    rebuild the transfer case as well as the
    transmission, and add the cost of doing
    this to the job.
    Isuzu used the A340H in its Trooper
    line since the Trooper’s inception in
    1988, up through 1991 in vehicles with
    a 2.6L inline 4-cylinder, and a 2.8L V6.
    Isuzu, like Toyota, also had the
    hydraulic transfer case that was capable
    of true “shift on the fly.”
    In 1990, Aisin Warner started
    producing the sister to the A340E,
    designated the A341E. Lexus was the
    first automaker to use the A341E. It
    debuted in the LS400 line in 1990, the
    SC400 in 1992, the GS300 in 1993, and
    the SC300 in 1998. Toyota used the
    A341E in the 1993-98 Supra, paired
    with the 3.0L twin cam turbo engine.
    Volvo also used this unit with a
    designation of AW 40 in its 960 series
    from 1993-97, and its 90 series for
    1998-up.
    The A341E was only produced in a
    two-wheel drive version. It is basically
    a beefier A340E, with a shorter output
    shaft and extension housing, and a bolton
    flange yoke. These external characteristics
    readily distinguish the A341E
    from its sister, the A340E. Internally,
    you will see numerous changes. There
    is a different pump, clutch pack
    changes, an added shift (line pressure)
    control solenoid, and changes to the
    valve body for line pressure modulation.
    You will also notice that the lock-up
    control solenoid went from an on/off
    type to a pressure modulation type.
    The 1993-98 Supra 3.0L turbo and
    the 1998-up Lexus SC300 went one step
    further on their A341E, and added a
    throttle control solenoid that controls
    hydraulic pressure to the back chamber
    of the accumulators. This helps control
    shift feel.
    In 1995, Toyota decided to do away
    with their hydraulic transfer case and go
    with a conventional mechanical transfer
    case. This was a welcome change to
    most rebuilders and owners, since you
    no longer had to disassemble the
    transfer case and build it along with the
    transmission. The new designation for
    the four-wheel drive units with a
    separate transfer case is “A340F.” This
    unit was used in all of their four-wheel
    drive vehicles from 1995-up, except for
    the Landcruiser. Mitsubishi also used
    the A340F in their 1995-98 Montero.
    Another event that took place in
    1995 was the addition of another version
    of the A340 series. This new version
    was designated A343F, and it was only
    produced in a four-wheel drive version.
    The only applications this was used in
    were the high line four-wheel drives like
    the Lexus LX450 and LX470, as well as
    the 1995-up Landcruiser.
    The 1995-97 A343F is basically an
    A341E internally, with the exception of
    the output shaft and some clutch pack
    changes. It also uses the A340E type
    valve body instead of the shift control
    solenoid valve body like in the A341E.
     
  7. Mar 28, 2008 at 4:40 PM
    #7
    glassdoc

    glassdoc Well-Known Member

    Joined:
    Mar 22, 2008
    Member:
    #5454
    Messages:
    172
    Spring City, PA 19475
    Vehicle:
    04 DubCab 260,000 miles
    Stubbs Sliders, 2.5" lift, Ken-Mtn Bumpers, Leather Seats, AM/FM/CD/DVD & CB, IP Trans-Upgrade, (2) Trans Coolers, Synthetics Thru-out
    In 1998, the A343F underwent a face lift
    A
    4
    and had the shift control (line pressure)
    solenoid added to the hydraulics, as
    well as a throttle control solenoid.
    All of the A340 series of transmissions
    are generally very reliable. But
    close attention is needed when doing a
    rebuild. The valve body has had many
    changes from model to model, and you
    need to pay close attention to all the
    check ball locations since they’ve been
    moved around a lot.
    One area of concern is that the
    throttle position sensor on the Jeep
    applications goes bad quite often,
    causing what is generally described as a
    neutralizing condition while at cruise.
    Another weak point is the famous
    “Toyota clogged shift solenoid syndrome,”
    as well as problems with the
    speed sensors going bad.
    Several of the tech services have
    good technical manuals available for
    these units, and it is highly advised to
    have them on hand when tackling one
    of these for a rebuild.
    If you think all this is confusing
    enough, think again, because the latest
    trend is not towards simplicity. The
    new generation of 5-speed is here, and
    there are two different versions out
    already. The first is the A350E, and the
    second is the A650E. But that’s another
    story……..
     
  8. Mar 31, 2008 at 6:39 AM
    #8
    jlr23402003

    jlr23402003 [OP] New Member

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    great info. thats exactly what i needed. thanks
     
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