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Transmission Aisn Warner 340 series transmissions ( WRITE UP ) Your 4 speed automatic

Discussion in 'Technical Chat' started by gearcruncher, Apr 19, 2014.

  1. Apr 19, 2014 at 7:03 AM
    #1
    gearcruncher

    gearcruncher [OP] Well-Known Member

    Joined:
    Nov 1, 2012
    Member:
    #90305
    Messages:
    4,859
    Gender:
    Male
    First Name:
    Canadain bumper technician
    Great white North 51.0333° N, 93.8333° W
    Vehicle:
    2010.TRD.SportDCLB4x4Limited leather package
    TRD Sport Rally -5 speed automatic Limited ,Factory heated leather seats ,chrome package,Super white with front windows tinted to 35 % Dick Cepek DC-2 wheels Summer tires - Good year silent armor P265/65R17 Winter tires - Good year P265/65R17 Ultra Ice studded Illuminated 4x4 switch TRD 3rd brake light cover ($20) TRD seat belt shoulder protectors (5). ($50) TRD ...B pillar emblems ($20) TRD rear slider sticker with devil horns ( $6) TRD summer floor matts ($60) TRD steering wheel emblem ($20) TRD floor pedals .($95) TRD shorty antenna ($14) TRD front Windshield emblems ($17) TRD head pillows .($60) TRD head rest protectors TRD door scuff protection $20 TRD floor matt emblems ($40) TRD tow plug emblem . ($40) TRD cigarette lighter with LED.($35) TRD tissue dispenser ($12) TRD front bezel emblems ($9) TRD door emblems ($6) TRD lanyards($9) TRD lisence plates with TRD bolts($50) TRD fender emblems TRD center caps Part Number:PT904-35070-CC ($80) TRD cd
    The following transmission codes represent what tranny you have.
    This complete thread is designed to help you determine the information you are looking for .
    If you have a problem with your transmission , start a new thread and describe your problem as much as possible .
    *A340F are found in 4wd 4runners and trucks that have the 2.4L 22RE 4cyl motors.
    *A340H are found in 4wd 4runners and trucks that have the 3.0L 3VZ-E< V6 motors.
    *A340E are found in 2wd 4runners and trucks that have the 3.0L 3VZ-E V6 motors.
    prerunner 2.7 use an a340e. A340f for a 4wd
    All of these(except the 2wd versions) have an integrated chain driven transfer case that gives a 2.56:1 gear reduction in 4lo.


    Identify your truck http://www.ncttora.com/fsm/

    identify your transmission
    http://atsgmembers.com/transtype/

    Type in your make and model number here to identify your transmission
    https://www.atsg.us/atsg/transtype

    Here is a good explanation on how your transmission works . Take a couple minutes out and read it http://www.sonnax.com/tech_resource...in-the-pump-pr-converter-cooler-lube-circuits

    Got any questions ??? send me a pm



    According to Toyota , the trans uses Genuine Toyota type T-IV
    http://www.customtacos.com/tech.old/...a/02600110.pdf

    [​IMG]
     
    Last edited: Jan 12, 2018
    ToyotaJim, Brie, jammer and 2 others like this.
  2. Apr 19, 2014 at 7:21 AM
    #2
    gearcruncher

    gearcruncher [OP] Well-Known Member

    Joined:
    Nov 1, 2012
    Member:
    #90305
    Messages:
    4,859
    Gender:
    Male
    First Name:
    Canadain bumper technician
    Great white North 51.0333° N, 93.8333° W
    Vehicle:
    2010.TRD.SportDCLB4x4Limited leather package
    TRD Sport Rally -5 speed automatic Limited ,Factory heated leather seats ,chrome package,Super white with front windows tinted to 35 % Dick Cepek DC-2 wheels Summer tires - Good year silent armor P265/65R17 Winter tires - Good year P265/65R17 Ultra Ice studded Illuminated 4x4 switch TRD 3rd brake light cover ($20) TRD seat belt shoulder protectors (5). ($50) TRD ...B pillar emblems ($20) TRD rear slider sticker with devil horns ( $6) TRD summer floor matts ($60) TRD steering wheel emblem ($20) TRD floor pedals .($95) TRD shorty antenna ($14) TRD front Windshield emblems ($17) TRD head pillows .($60) TRD head rest protectors TRD door scuff protection $20 TRD floor matt emblems ($40) TRD tow plug emblem . ($40) TRD cigarette lighter with LED.($35) TRD tissue dispenser ($12) TRD front bezel emblems ($9) TRD door emblems ($6) TRD lanyards($9) TRD lisence plates with TRD bolts($50) TRD fender emblems TRD center caps Part Number:PT904-35070-CC ($80) TRD cd
    Check this link ..... it explains how your transmission works http://www.autoshop101.com/forms/h16.pdf

    Type in your VIN # and see what,s been done to your truck
    http://www.toyota.com/owners/web/pages/home


    Changing your transmission fluid ???????????????????
    Listen to the guys who do it every day
    http://www.atra.com/transmission_service

    The best transmission conditioner you can buy that should be added every time you change your transmission fluid . Check out LUBEGUARD ....Buy some . This product was only available to transmission shops . Now you can purchase through Amazon
    https://www.lubegard.com/automotive/#submenu1

    https://www.amazon.ca/s/?ie=UTF8&ke...targid=kwd-295247235787&ref=pd_sl_axh1mig6j_e

    Here is a great write up with pictures for you guys looking to change your transmission fluid https://www.tacomaworld.com/threads/silverghost-rises.360448/page-7

    Changing your transmission fluid video,s and how to do it
    https://www.tacomaworld.com/threads...t-be-toyota-brand.457322/page-2#post-13543043


    Here is the complete parts manual for your truck showing diagrams and prices as of Oct/2013
    [​IMG] 2013 Toyota Tacoma Pickup.pdf

    HEADS UP !!!!! DO NOT DO THIS https://www.tacomaworld.com/threads/halp.33318/
    Dont do this
    https://mustangforums.com/forum/5-0l-general-discussion/368307-i-m-done-with-this-car.html




    A great write up with pictures removing a 340 series 4x4 transmission for faulty torque converter with PO770 https://www.yotatech.com/f2/tranny-issues-p0770-s-o-s-294937/

    And here is another great write up for P0770
    https://www.tacomaworld.com/threads/sonnax-zip-kit-a340-late-installation.435019/#post-14714790


    A340 manuals / shift kits / parts
    https://drive.google.com/drive/folders/1_M6JJbIlvvsgFHa71bOaegC5ulWUWZ6Q


    Do Not BUST YOUR TRANSMISSION PUMP
    https://www.tacomaworld.com/threads...ate-truck-is-dead.528432/page-3#post-16990021

    Here are the Sonnax repair kits available http://www.sonnax.com/searches?utf8=✓&query=a340&commit=Go

    Here is the trans-go reprogram kit .http://www.transgo.com/products.php...d=253&countdisplay=1&start=0&addcountview=Yes

    IPT valve body upgrade https://www.youtube.com/watch?v=vZFwSP2TbTY

    A sonnax zip kit write up ..Going into the valve body to fix specific concerns before you cook the transmission
    https://www.tacomaworld.com/threads/sonnax-zip-kit-a340-late-installation.435019/

    For you wacky racers ...paddle shifters are available http://www.latentsolutions.com/suprastickuv.html

    diagnostic trouble code p0770 [​IMG] M.I.L._ON_DTC_P0770_T-EG025-02.pdf

    IPT performance transmission http://www.importperformancetrans.com/toyotaauto.shtml

    SHOULD YOU INSTALL A SHIFT KIT http://www.docstoc.com/docs/113413812/Toyota-Modified-Valve-Body-(PDF-download)

    Should you use one of those fancy in line magnetic filters ?
    I would not chance placing a filter in line of "cooler flow" .Its the wrong place to install a metal cleaner .Cooler flow is extremely important and We all know heat kills an automatic transmission . You are not going to know the filter is plugged until the trans temp light pegs out at 310 degrees . You are too late by then and have cooked your trans fluid unless you have a trans temp guage that you monitor on a constant basis .
    Did I use them in my transmission shop ? absolutely but only for a two week duration as described in the quote .
    The filter in the pan is designed to catch large particulates including metal . Magnets laying in the bottom of your transmission pan accumulate metal over time but there are small particles of steel that the Toyota pan filters allow to pass through . If you install a magnetic in line filter in line with " cooler flow ", sooner or later chunks of metal will accumulate on that magnetic in line filter and restrict the flow .Pop your transmission pan off and clean the magnets , clean the mesh filter and keep your fluid as clean as possible on a regular basis and you will be fine .
    For the non believers in the group , call around to a few transmission shops and inquire about the Magnetic in line filter but please talk with a journeyman .
    If you have one on your truck , remove it and cut it open to see whats inside .

    Dual transfer case set up http://www.lowrangeoffroad.com/yotamain/inchwormgear.html

    Shift Controllers http://www.radesignsproducts.com/

    How to fix that loose shifter https://www.tacomaworld.com/threads/how-to-tighten-shifter.402439/

    Solid transmission mount for 2 wheel drive
    https://www.tacomaworld.com/threads/2wd-v6-auto-trans-solid-mount.471707/

    INSTALL A V8 ENGINE
    http://www.marks4wd.com/engine-conversions/bell-housing-adaptors/ls-v8-engines/mfk650g3.html

    Guy installed new brake lights , couldnt get the transmission out of park
    https://www.tacomaworld.com/threads/2006-tacoma-shifting-issue-help.506417/

    Superduty transmission mount http://www.tacomaworld.com/forum/4x-innovations/93081-tacoma-super-duty-transmission-mount.html

    Solid motor mounts and transmission mounts
    https://www.tacomaworld.com/threads...ted-solid-motor-mounts-for-sale.406631/page-4

    Replacing transmission mounts / motor mounts " VIDEO "
    https://www.tacomaworld.com/threads/transmission-and-engine-mount-replacement.505393/#post-16179209


    ECT explained http://www.autoshop101.com/forms/h16.pdf

    expanded view of internal transmission parts https://www.automaticchoice.com/uploads/producten/pdfs/Catalogue/aw_340.pdf

    Planning on taking your Tacoma for a swim ? Think again http://www.tacomaworld.com/forum/2nd-gen-tacomas/358342-no-fuel-after-bath.html

    Convert your pre-runner into a 4x4 http://www.lowrangeoffroad.com/yotamain/inchwormgear.html
    Exploded view https://www.automaticchoice.com/uploads/producten/pdfs/Catalogue/aw_340.pdf

    Master kits http://www.makcotransmissionparts.com/A340.html

    Repair Manual on cd ...ATSG https://www.atsg.us/atsg/import-manuals-1/toyota-a340-cd.html

    Free repair Manual http://kai.supramania.com/Supra/A340 Series Repair Manual (RM216).pdf

    Electrical diagram A340E http://www.customtacos.com/tech.old.../06toyrm/06toypdf/06rmsrc/rm2006ta/026000.pdf

    DONT BLAME THE TORQUE CONVERTER http://www.sonnax.com/articles/74-Do...verter-Part-1-

    Common problems and frequently asked questions http://www.pirate4x4.com/forum/showthread.php?t=587521

    1993 tacoma not shifting into 3rd of 4th http://www.tacomaworld.com/forum/pe...ting-med-speeds-3rd-4th-gear.html#post9412007

    Slip indicator light stays on http://www.tacomaworld.com/forum/2nd-gen-tacomas/92474-recalibrating-vsc-why-how.html

    More common problems http://etereman.com/blog/uncategorized/common-problems-found-in-the-toyota-a340e-transmission/

    DO NOT DO THIS http://www.tacomaworld.com/forum/2nd-gen-tacomas/33318-halp.html

    What the Supra guys are saying http://www.supraforums.com/forum/sh...e-A340-Factory-automatic-trans-built-or-stock

    Watch a 340 tear down and overhaul http://www.tacomaworld.com/forum/1st-gen-tacomas/269064-transmission-rebuild.html

    Try changing your transmission fluid first . Cleaning the throttle body and mass air flow sensor have claimed to fix up some funky shifts
    How To: Throttle body cleaning 2005+ V6 http://www.tacomaworld.com/forum/technical-chat/94203-how-throttle-body-cleaning-2005-v6.html
    How to for 2.7 http://www.tacomaworld.com/forum/1s...o-throttle-body-intake-manifold-cleaning.html


    Here is the complete service/ repair manual for your truck. Download it while its still there

    COMPLETE SERVICE MANUAL http://www.customtacos.com/tech.old/...SM/repair.html



    Check for TSB,s here http://www.revbase.com/BBBMOTOR/


    FLUSHING THE A340 series transmission / PAN DRAIN OR FLUID FLUSH
    FLUSHING YOUR TRANSMISSION
    I have serviced approx 4000 automatic transmissions . Does this make me a pro with the A340 series transmission in your Tacoma? NO , but I will try and explain
    Years ago , most of the shifting was controlled by hydraulics or mechanical spool valves inside the valve body . When a customer brought their transmission into my transmission shop to have it flushed ( without removing the pan and filter ) there was a possibility of forcing the material from the bottom of the transmission pan into the valve body causing the spool valves to stick .This was very common with the popular GM 700R4 and Chrysler A670
    As transmissions get newer , electrical solenoids and sensors are taking place of the many mechanical spool valves in the valve body . Solenoids now have a larger bore. In saying this , flushing a transmission can now be performed with less possibilities of hydraulic spool valves getting all gummed up and stuck.
    If you plan to flush , get quotations from a shop that uses a flushing machine with the pan and filter removed .They are the best flushing machine to use because this machine guarantees the pan was removed before the flush was performed .
    This method attaches the machine’s line out to the pump intake. The process transfers fluid through the vehicle and into a drainage pan, completely flushing the system. When cleared, new fluid is supplied to fill up the car. This process requires the complete removal of your pan and filter and a new filter and pan gasket are installed at the end. This requires more time, a few extra quarts of fluid (around 20) and costs a bit more, but it is a much more complete, ideal procedure. - See more at: http://www.transmissionrepaircostgui....YDlT9xaq.dpuf
    Once the pan and filter have been removed , connect the flushing machine to the filter suction line in the valve body casting , start the vehicle and flush away .
    Dont go to a shop that uses a cooling line flushing machine WITHOUT MAKING SURE THE PAN IS REMOVED FIRST .The guy telling you to flush without removing the pan first must have ESP ? How does he/she know the condition of your transmission . Remove the pan first regardless of miles.
    All Flushing machines use your transmission pump to mix/force the old oil out and your engine has to be running to turn the transmission pump .Flushing machines will Never flush fluid backwards through a transmission or what some quick lube shops call reverse flushing / backflushing . Your transmission pump only turns one way so dont let those guys fool you into thinking they have a special super flushing machine .
    Note: Some service centers use machines that add additional force to blast fluid and/or cleaning solution through the system. This is NEVER a good idea as this can damage seals and/or lodge sludge in places it shouldn’t be as mentioned above. - See more at: http://www.transmissionrepaircostgui....B2SaFB52.dpuf
    If the truck was mine or a customer of mine , I would get that old stuff outta there .
    There are 11 duties transmission fluid carries out inside the transmission .New fluid will help to prevent transmission failure .
    1 - transmission fluid is the lifeblood of your transmission.
    2- Trans fluid lubricates every part inside the transmission ...at minumum 1000 moving parts which is far more than what your engine has
    3- Trans fluid is used to keep your transmission cool
    4- Trans fluid is used to transfer hydraulic power
    5- Trans fluid is used as a coupling device to transfer engine load to the gearing .
    6- Trans fluid acts like a glue when automatic clutches are applied providing additional holding strength.
    7- transmission fluid has a high detergent level and keeps your valve body clean .
    8- There are more , dont remember the rest hehehe


    SHOULD YOU USE THE PARKING BRAKE WITH AN AUTOMATIC
    I use the ebrake every day and I have an automatic transmission. Using the ebrake when parking is recommended in the Toyota manual . Living way up North in the snow as I type this , they use all kinds of salt .Its better to use the ebrake than have it seize up solid and pay $500 bucks to have all the cables replaced when its time to sell the truck.
    With this said , using the ebrake keeps the rear brake shoes adjusted properly and saves your front brakes from wearing quickly http://www.tacomaworld.com/forum/2nd-gen-tacomas/157684-brake-click-fix-2.html
    You're also being very nice to the parking pawl inside your transmission. Lots of people just jam it into park on an incline and don't ever use the e-brake. Or worse, jam it into park when the vehicle is still rolling. An e-brake cable is a cheap fix compared to a transmission problem.
    Picture a 4000 lb truck on an incline and parked without using the e brake . Those tiny parts are no match for 4000 pounds .I have seen these broken hundreds of times .
    [​IMG]

    Look what happens to a Tacoma when you dont use the E brake http://www.tacomaworld.com/forum/2nd...ml#post9531711

    A Toyota Transmission Engineer, states: “T he reason the TT A340i uses TIV is because those trans' have flex lockup and "intelligence" control. The "i" means the ECM monitors input andoutput shafttiming to maintain constant shift speed over its life. The ECM's control calibration is matched to the TIV's fluid's friction coefficient and temperature characteristics. Any Toyota transmission with flex lockup (duty cycles linear solenoidat low speed and load) uses that fluid. Otherwise dexron III is used. The clutches and seals are the same. Using dexron in a TIV trans could cause shift flare, shock or lockup shudder. The Toyota stuff is very high quality (mineral based) and really not that inexpensive. There really isn't a "universal fluid".Using that train of that would be like saying all spark plugsare the same. “.




    Technical Service Bulletins Search Results

    Back
    AUTOMATIC TRANSMISSION SERIAL NUMBER LOCATION TSBID:134947Mfg Num:TC012-06Issue Date:2006-09-01 REMANUFACTURED AUTOMATIC TRANSMISSION SERIAL NUMBER LOCATION TSBID:134948Mfg Num:TC013-06Issue Date:2006-09-01 AUTOMATIC TRANSMISSION SERIAL NUMBER LOCATION - REVISED TSBID:136807Mfg Num:TC012-06RIssue Date:2007-02-09 WORLD STANDARD AUTOMATIC TRANSMISSION FLUID TSBID:138247Mfg Num:TC010-07Issue Date:2007-06-28 AUTOMATIC TRANSMISSION SHIPPING BAG FOR WARRANTY RECOVERY TSBID:139068Mfg Num:TC012-07Issue Date:2007-07-31 ALIGNMENT PIN INSTALLATION DURING TRANSMISSION / TRANSAXLE ASSEMBLY INSTALLATION TSBID:142852Mfg Num:T-SB-0053-08Issue Date:2008-05-08 AUTOMATIC TRANSMISSION/TRANSAXLE FLUID LEVEL INSPECTION TEMPERATURE RANGES TSBID:144534Mfg Num:T-SB-0129-08Issue Date:2008-07-09 AUTOMATIC TRANSMISSION SERIAL NUMBER LOCATIONS - REVISED TSBID:144543Mfg Num:T-SB-0200-08Issue Date:2008-08-07 REMANUFACTURED AUTOMATIC TRANSMISSION SERIAL NUMBER LOCATION - REVISED TSBID:145106Mfg Num:T-SB-0260-08Issue Date:2008-09-03 A340E TRANSMISSION SOLENOID IDENTIFICATION TSBID:147807Mfg Num:T-SB-0075-09Issue Date:2009-02-27 A750 TRANSMISSION SOLENOID IDENTIFICATION TSBID:147808Mfg Num:T-SB-0076-09Issue Date:2009-02-27 TORQUE CONVERTER FLEX LOCKUP SHUDDER - REVISED TSBID:148144Mfg Num:T-SB-0096-09Issue Date:2009-03-20 A750E Transmission Extension Housing Seal Service Tip TSBID:150811Mfg Num:T-SB-0173-09Issue Date:2009-06-11 MIL ON DTC P0705 TSBID:151214Mfg Num:T-SB-0277-09Issue Date:2009-08-18 Torque Converter Bolt Installation TSBID:168325Mfg Num:T-SB-0014-11Issue Date:2011-02-17 ATM Manual Shift Lever / Park Neutral Position Switch Installation TSBID:169623Mfg Num:T-SB-0049-11Issue Date:2011-05-31 Automatic Transmission Replacement Precautions TSBID:170367Mfg Num:T-SB-0071-11Issue Date:2011-07-13 Automatic Disconnecting Differential (A.D.D.) Shift Actuator Inoperative TSBID:174188Mfg Num:T-SB-0066-12Issue Date:2012-04-25


    http://www.revbase.com/BBBMotor/TSb/DownloadPdf?id=148144





    A340F
    Description
    Operation
    Basic Troubleshooting
    General Troubleshooting
    Diagnosis System
    Preliminary Check
    Manual Shifting Test
    Electronic Control System
    Mechanical System Tests
    Automatic Shift Schedule
    Park Neutral Position Switch
    On Vehicle Repair
    Removal and Installation of Transmission
    Torque Converter Clutch and Drive Plate
    Shift Lock System

    A340E Automatic Transmission
    Automatic Transmission System: Precaution
    Automatic Transmission System: Definition Of Terms, Parts Location
    Automatic Transmission System: System Diagram
    Automatic Transmission System: System Description, How To Proceed With Troubleshooting
    Automatic Transmission System: Road Test
    Automatic Transmission System: Mechanical System Tests
    Automatic Transmission System: Hydraulic Test
    Automatic Transmission System: Manual Shifting Test, Monitor Drive Pattern
    Automatic Transmission System: Problem Symptoms Table
    Automatic Transmission System: Terminals Of ECM
    Automatic Transmission System: Diagnosis System
    Automatic Transmission System: DTC Check / Clear
    Automatic Transmission System: Check Mode Procedure, Fail-Safe Chart
    Automatic Transmission System: Data List / Active Test
    Automatic Transmission System: Diagnostic Trouble Code Chart
    Automatic Transmission System: P0705, P0850
    Automatic Transmission System: P0710, P0712, P0713
    Automatic Transmission System: P0717
    Automatic Transmission System: P0722
    Automatic Transmission System: P0724
    Automatic Transmission System: P0751
    Automatic Transmission System: P0756
    Automatic Transmission System: P0973, P0974, P0976, P0977
    Automatic Transmission System: P2716
    Automatic Transmission System: P2740, P2742, P2743
    Automatic Transmission System: P2757
    Automatic Transmission System: P2759
    Automatic Transmission Fluid: On-Vehicle Inspection
    Extension Housing Rear Oil Seal: Removal, Installation
    Speed Sensor: Removal, Installation
    Transmission Wire: Removal, Installation
    ATF Temperature Sensor: Removal, Installation
    Park / Neutral Position Switch: Removal, Adjustment, Installation
    Valve Body Assembly: Removal
    Valve Body Assembly: Installation
    Shift Lock System: On-Vehicle Inspection
    Floor Shift Assembly: Components
    Floor Shift Assembly: Removal, Disassembly
    Floor Shift Assembly: Adjustment, Reassembly, Installation
    Automatic Transmission Assembly: Components
    Automatic Transmission Assembly: Removal
    Automatic Transmission Assembly: Installation
    Torque Converter Clutch And Drive Plate: Inspection
    Transmission Control Cable: Removal, Installation




    Vibrations
    Have you greased your driveline ?http://www.tacomaworld.com/forum/tec...rks-total.html
    Does the truck vibrate in park or neutral and does the vibration change with accelarator pedal ?
    Does the truck vibrate while holding the brakes and hitting the gas - Automatic ?
    Does the truck vibrate in neutral at a stand still ?or coasting in neutral ?
    Does the truck vibrate in 4x4 ?
    Does the truck only vibrate in 2 wheel drive ?
    Does the truck vibrate with the serpentine belt removed ?
    Does the truck vibrate cold or hot ?
    Does the truck vibrate if you select nuetral and coast to a slow roll without using the brakes ?
    Does the truck vibrate as you are braking ?
    Does the truck vibrate with weight in the truck or empty ?
    Does the truck vibrate while upshifting ? Have you checked your trans fluid ?
    Does the truck vibrate while downshifting ? Have you checked your trans fluid ?
    When was your last transmission fluid service ?
    Now that you have a lift kit installed the truck vibrates . Did you cancel your drive line angles ?
    Have you looked at the condition of your tires ? Toyota says to rotate every 5000 miles .Tacoma tires must be road forced balanced using the Haweka adapter on the tire machine [​IMG] tsu00296.pdf
    When was the last time you rotated your tires ?
    Have the balance weights fallen off the tires ?
    The proper and only way to test for bad universal joints is with the driveshaft removed . You cant tell if the universal joints are seized or tight spots with the driveshaft on the truck . You may see play in the universal joints , but you wont be able to properly check the u-joints without removing the driveshaft .All it takes to create a vibration is one seized universal cup and there are 4 cups within each joint .
    With this said , you cant tell if that cup is seized with the driveshaft connected .
    Removing the driveshaft and manipulate each universal joint by hand from side to side feeling for tight spots as you go
    If you beleive its bad motor mounts or transmission mounts , grab a big pry bar and pry at the mounts to see if the rubber is torn or weak .


    TRANSMISSION COOLERS TRANSMISSION COOLERS
    If you do not have a transmission cooler on your truck and you plan to tow or haul heavy loads or you are in heavy stop and go traffic and use 4X4 low a lot , consider purchasing a cooler . The cooler thats built into your rad is designed to cool the transmission with the weight of just the truck by itself .When you are in 4x4 low , your torque converter is usually in the stall stage and creates a tonne of additional heat .
    160 - 200 are considered normal temps providing your engine radiator is functioning properly . If your engine overheats , your transmission will also overheat
    Normal fluid temperature in transmission to be 175 deg. F.

    Rate of oxidation to double for each temperature increase of 20 deg F above normal (175 deg F). As oxidation rate doubles, useful life of fluid is cut in half.

    At 175 deg F life is 100,000 miles
    At 195 deg F (20 deg above 175) life is 50k miles
    At 215 life is 25k miles
    At 235 life is 12k
    At 255 life is 6,250
    At 275 life is 3,000
    At 295 life is 1500
    At 315 life is 750

    At temperatures much above 300 deg F the metals in the transmission will tend to warp, twist etc. high temperatures causes the formation of varnish deposits which impair or pre vent transmission operation.

    At a fluid temperature of 415 deg F fluid life is 30 minutes!

    Source: Empire Lubricants Inc.
    Consider a scan guage [​IMG]http://www.amazon.com/ScanGauge-Comp.../dp/B000AAMY86
    Here is the best information for the scan guage http://www.tacomaworld.com/forum/2nd-gen-tacomas/102837-scangauge-ii-can-read-oil-pressure.html
    Ultraguage is now offering transmission temps http://www.tacomaworld.com/forum/2nd-gen-tacomas/318340-ultragauge-transmission-temp.html

    You could also use the Torque app with an Android phone as a cheap alternative to watch your temps http://www.tacomaworld.com/forum/performance-tuning/183560-write-up-torque-app-obd2-reader.html

    This is how Low Pressure Drop technology works::
    When Automatic Transmission Fluid (ATF) is cold it is viscous. The unique Tru-Cool design allows the colder, thicker ATF to flow more efficiently through two open bypass channels positioned at the top of the cooler. As operating temperatures increase, the ATF becomes hotter and thinner, It's then directed through the core where it is cooled. Tru-Cool's highly efficient cooling technology combines improved protection against lube failure with optimal heat transfer.
    http://www.amazon.com/Long-Tru-Cool-Transmission-Cooler-4454/dp/B005XZXB1M
    Long Tru-Cool Oil Coolers offer advanced cooling protection for many towing applications. The advanced technology out performs TUBE & FIN Designs, Delivers up to 15 times less flow restrictions, 30% more cooling delivers maximum heat transfer, Self-Regulating for maximum lube flow protection through start-up, varied temperatures and driving conditions, heavy loads and towing.
    Here is Toyotas fluid flow guide ...Look at page 8 on this PDF http://www.toyotatundraforum.com/pdf/A750E.pdf
    And here is a guy who recently installed a cooler correctly http://www.tacomaworld.com/forum/1st...agram-pic.html

    cooler and fan install http://www.tacomaworld.com/forum/2nd-gen-tacomas/352071-my-trans-cooler-fan-install.html

    Transmission for sale ...............https://www.tacomaworld.com/threads...0k-miles-600-ne-florida.398879/#post-11078340


     

    Attached Files:

    Last edited: Jan 21, 2019
  3. Apr 19, 2014 at 7:25 AM
    #3
    smmarine

    smmarine Well-Known Member

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    Now correct me if I'm wrong, but the a340 series has 4 gears, and then O/D(so technically 5 gears), right? Cause I'm so tired of hearing how it's a 4 speed when I know I hear 4 shifts(cause it's always in first at stop)
     
  4. Apr 19, 2014 at 9:19 AM
    #4
    gearcruncher

    gearcruncher [OP] Well-Known Member

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    Its a 4 speed . You are probably feeling the converter locking up in 4th ;)
     
  5. Apr 19, 2014 at 10:18 AM
    #5
    smmarine

    smmarine Well-Known Member

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    Ok, so that's why when o/d is turned off it downshifts twice? I wish it wouldn't and only shut the torque converter off
     
  6. May 6, 2014 at 5:26 AM
    #6
    2scars

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    Do you know what the torque converter does? There is a lot of information included in this thread, you may want to read some of it.
     
  7. Jun 23, 2014 at 11:33 AM
    #7
    smmarine

    smmarine Well-Known Member

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    Gearcruncher, any help on a hiss like this from the trans? It does it when it's under load, like towing from a stop, or in this case just holding the brake and give a little gas
    http://youtu.be/GPXfPvnStFY
     
  8. Jun 23, 2014 at 5:33 PM
    #8
    gearcruncher

    gearcruncher [OP] Well-Known Member

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    Does it make the same noise in reverse as it does in forward when under load ?
    Hold your foot on the brake and hit the gas in reverse ......do you get the same noise when you do this ?
    Trying this usually eliminates broken mounts and loose exhaust shields because you are forcing / twisting everything in the opposite direction
    If it continues to make the same noise in reverse as it does in forward , research stall stage , coupling stage and converter lock up . After listening to the video 3 or 4 times ,Its a little tough to determine your sound/ hiss over the internet and I have a recording studio for playback in my basement .
    If I had to guess , there may be an issue with a thrust bearing inside the converter . With this said and if i am correct , the noise should go away once the converter shifts into coupling stage
     
  9. Jun 23, 2014 at 6:12 PM
    #9
    smmarine

    smmarine Well-Known Member

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    It does it in reverse and drive. I can faintly hear it driving normally, as soon as I accelerate I get it for just a second till the truck starts moving. The sound gets really prominent when I'm towing, and will make it when backing up my boat, or just at the initial acceleration foward from a dead stop. Once I get up to speed a bit, say 3-5mph, it disappears. But I will get it if the truck is moving slow under any sort of load(hills, offroad , towing, loaded, etc).
     
    Last edited: Jun 23, 2014
  10. Jun 23, 2014 at 6:17 PM
    #10
    gearcruncher

    gearcruncher [OP] Well-Known Member

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  11. Jun 23, 2014 at 6:25 PM
    #11
    smmarine

    smmarine Well-Known Member

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    His complaint was a rattling. Mine wouldn't be described as that. It's literally a loud hiss. I mean I don't think it's right, but it's done it for over a year haha. I can't afford trans work right now, so let's hope it doesn't crap out on me now!

    Edit:and should I need a new trans in the future, I'm thinking an a340f with accompanying transfer case would be a great option vs my old a340e trans :D
     
  12. Jun 23, 2014 at 6:57 PM
    #12
    gearcruncher

    gearcruncher [OP] Well-Known Member

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    I have seen bad converters last a long time . A broken fin on one of the impeller blades will sometimes make the hiss sound too . From your explanation , my guess is either a torrington bearing coming apart or you have a broken fin on the impeller .When fins on the impeller break off , the impeller continues to function but oil is splashed up against the outer converter housing rather than being forced to the turbine and stator . This could be what you are hearing . When people get their transmission rebuilt ,they usually dont get to see the torque converter disassembled . Most transmission shops usually send your torque converter back to the rebuilder as a core .
    In the old days , you could take them all apart ...they were just bolted together
    Here is a good pic of what the inside of the converter looks like .
    http://www.builderstransmission.com/Pages/tcc.aspx
    You can pick up a second hand 4x4 trans and transfer case fairly cheap but a donor truck would be your best bet since you would get the front diff as well .Wish ya luck dude .;)
     
  13. Jun 23, 2014 at 9:47 PM
    #13
    smmarine

    smmarine Well-Known Member

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    Would any of the possible causes show abnormal amounts of metal in the fluid? Cause I just a a complete exchange and filter swap and the trans shop said everything looked normal
     
  14. Jun 25, 2014 at 8:09 AM
    #14
    Andy.G

    Andy.G Well-Known Member

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    Hey gearcruncher! Got question on application. You stated that the 340f is applicable to 2.4. Isn't it also applicable to the 2.7 also? Just wondering since that's the trans I had in a 96 I thought. Thanks.
     
  15. Jun 25, 2014 at 8:47 AM
    #15
    smmarine

    smmarine Well-Known Member

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    If it's a prerunner it's an a340e. A340f for a 4wd
     
  16. Jun 25, 2014 at 10:28 AM
    #16
    Andy.G

    Andy.G Well-Known Member

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    Yeah, kinda already know this but post doesn't mention it. It says 4wd 4runners and 2.4 trucks.(22RE). Thought maybe he would want to edit in. Kinda why I asked op the question. But thanks.lol
     
  17. Jun 25, 2014 at 11:04 AM
    #17
    smmarine

    smmarine Well-Known Member

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    Yeah I also noticed the post didn't have every combo haha. I just didn't say anything
     
  18. Jun 25, 2014 at 11:37 AM
    #18
    Andy.G

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    I get held to the word all the time here smmarine. You know what I mean ,I'm sure. You have enough posts to see between the lines.haha
     
  19. Jun 25, 2014 at 11:45 AM
    #19
    n0ms

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    So much stuff to read. Good info.
     
  20. Jun 25, 2014 at 12:10 PM
    #20
    Andy.G

    Andy.G Well-Known Member

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    Seems like sticky info.:D
     

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