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Old 04-25-2012, 03:10 PM   #721
Damin
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picking the right computer..

So i have a list of computers that i can use from the dealer, each year has its own number. my question is can i put a 2003 computer (89661-04520) in an 2001 or 2004 and visa/versa?

side note: I'm going to SAS the front so i will be using a 2WD, V6, Manual, ECU.
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Old 04-25-2012, 03:16 PM   #722
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Quote:
Originally Posted by Damin View Post
picking the right computer..

So i have a list of computers that i can use from the dealer, each year has its own number. my question is can i put a 2003 computer (89661-04520) in an 2001 or 2004 and visa/versa?

side note: I'm going to SAS the front so i will be using a 2WD, V6, Manual, ECU.

NO, YOU CAN'T! Thanks, Toyota.

Every. Single. Year. Is. Different.

Every. Single. Model. Is. Different.

See the PDF in my signature for more info on the ECU and wiring aspects of the conversion.

Tacoma ECUs are specific to Tacomas; 4Runners to 4Runners, T100s to T100s. The functions may be the same, but the wires, their pin positions, and their colors vary from year to year and model to model. Unless you feel like making this into an epic project that's considerably more difficult, spend the time or money to find the exact ECU you need!! "Close" isn't going to work.


Jeff
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Converting an early Taco from auto to manual?
My PDF of first gen. Tacoma ECU pinout comparisons will help!

Last edited by mosk22rte; 04-25-2012 at 03:21 PM. Reason: Jacked up the fear in my reply
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Old 04-27-2012, 01:01 PM   #723
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Quote:
Originally Posted by mosk22rte View Post
NO, YOU CAN'T! Thanks, Toyota.

Every. Single. Year. Is. Different.

Every. Single. Model. Is. Different.

Jeff
^^^ What he said. There ARE reasons for them being different.... the trucks are different. 2001 and '02 have slightly different emissions equipment and locations. 2003 and '04 are Drive-By-Wire, which is a completely different fuel management system than before. Get the right ECM for your truck.
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Old 05-10-2012, 07:33 PM   #724
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efff.. well I'm on the hunt for a computer! hint hint.. if any one has one for a 2003 tacoma I'm in the market.
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Old 06-07-2012, 11:54 PM   #725
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any updates from any one? im in houston doing a swap on my 2002 tacoma dc auto to manual & 4x4 if any one is doing this would like to know and help
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Old 06-08-2012, 12:50 AM   #726
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Originally Posted by reyess cash View Post
any updates from any one? im in houston doing a swap on my 2002 tacoma dc auto to manual & 4x4 if any one is doing this would like to know and help
My only update is that if yours is a V6, I did your exact swap and mine drives fine with no issues, no CELs, and passed CA smog. I've had it on the road for almost exactly 2 years...well, 2 years since the manual swap, 18 months since converting the front axle to 4wd. All of my issues and their resolutions are here in this thread.

Good luck with your swaps! It's definitely worth the effort, IMO. My truck drives great since completing the swaps, and other than needing to re-gear (not related to this swap), I couldn't be happier with it. If you have any questions, post 'em...but I'll bet most of the answers are in this thread already

Mine:



Manual hubs hidden because the tire shop installed the centers on the wheels. Thankfully the end caps pop off easily, but I would have left 'em exposed if they had asked me.

Jeff
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Old 06-08-2012, 11:05 PM   #727
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It's been a year and a half now on mine(damn, time flies), running great. No codes, passed emissions last year without issue.

The only real problem I had was being sold a crap transmission the first time around.

Now if I can only find the time, parts, and money to finish up this damn 4x4 conversion...
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Old 06-11-2012, 06:48 AM   #728
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Quote:
Originally Posted by mosk22rte View Post
My only update is that if yours is a V6, I did your exact swap and mine drives fine with no issues, no CELs, and passed CA smog. I've had it on the road for almost exactly 2 years...well, 2 years since the manual swap, 18 months since converting the front axle to 4wd. All of my issues and their resolutions are here in this thread.

Good luck with your swaps! It's definitely worth the effort, IMO. My truck drives great since completing the swaps, and other than needing to re-gear (not related to this swap), I couldn't be happier with it. If you have any questions, post 'em...but I'll bet most of the answers are in this thread already

Mine:



Manual hubs hidden because the tire shop installed the centers on the wheels. Thankfully the end caps pop off easily, but I would have left 'em exposed if they had asked me.

Jeff
dam thats a sweet ride my bro just got one in black just like yours ,both mine and my bro's are 02 dc and wanted the swap ever since we started reeding this threds my only consern is the dam ecu ive eye fucked this hole 25 page thred but I still cant seem t understand the dan wireing ive seen the ditail pdf you made but dont know were to start both ours are 02 tacos dc like yours could you show us what all was done to the wireing since yours is a 02 like ours , we have all the parts but seek your knowledge to better understand this
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Old 06-11-2012, 06:58 AM   #729
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Quote:
Originally Posted by theredhorseman View Post
It's been a year and a half now on mine(damn, time flies), running great. No codes, passed emissions last year without issue.

The only real problem I had was being sold a crap transmission the first time around.

Now if I can only find the time, parts, and money to finish up this damn 4x4 conversion...
exelent , its great to here its running good plus no cel's im in houston tx and we cant have any cels etheir im shure theirs shady inspections shops that will pass a truck with a cel light but knowing its 100 % is better hope you reach your gool
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Old 06-11-2012, 09:46 AM   #730
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dam thats a sweet ride my bro just got one in black just like yours ,both mine and my bro's are 02 dc and wanted the swap ever since we started reeding this threds my only consern is the dam ecu ive eye fucked this hole 25 page thred but I still cant seem t understand the dan wireing ive seen the ditail pdf you made but dont know were to start both ours are 02 tacos dc like yours could you show us what all was done to the wireing since yours is a 02 like ours , we have all the parts but seek your knowledge to better understand this
Cool, I'm happy to help. If you have the right ECU the wiring part is actually pretty easy. Are both of yours V6 motors? I'll assume they are.

Here's the good news: for 2002 V6 Tacomas you don't need to move any wires in the harness! All you have to do is remove/cut the ~15 wires not used by the manual trans ECU (which I call out in my PDF), and hook up the neutral start wires under the truck as per Tacoma4Life's wiring diagram, which appears numerous times in this thread.

By the way, I'm posting this from my phone, so I can't really do the searching and quoting to put all of these links in this reply. Feel free to ask questions, and any I can't answer now I'll answer when I'm back in front of my computer.

To remove wires from your harness, you can either use a jumper harness like the ones sold by URD, or you can just cut the actual wires in your OEM harness. The jumper harness method is easy to reverse if you ever need to, but it's pricey. Both work the same.

Using my PDF, find the 2002 V6 Tacoma pages. Each line lists a connection used by the auto ECU harness, and the corresponding connection used by the manual ECU harness. For the 2002 V6, these are either the same, or the connection is not used. Just cut the wires to the unused connections. That's it! By the way, my reason for cutting the wires is that I don't know what, if any, signal is carried by these when the AT is removed, and this just seemed like the safest way to deal with them. You could potentially just plug in the manual ECU and have it work (after you did the NSW wiring under the truck), but that's a bit of a gamble, so that's your call.

Do these instructions make sense?
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Old 06-13-2012, 11:32 PM   #731
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sorry for the late reply I was haveing some login issues any who ahh yes I can see clearly now this all make sence just one question the 15 wires that need to be moved / cut are thoes in one plug or in all plugs by the way both trucks are 02 dc v6 3.4, and did you wire the truck to start or used the clutch start button , I ask because I was able to score a clutch start button with plug & wires that goes on the left on a ex cab taco & since the ect button will have no use after the swap could that be used wire in to start like oem truck or am I opening up a hole new mess , what did you do
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Old 06-14-2012, 02:00 AM   #732
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sorry for the late reply I was haveing some login issues any who ahh yes I can see clearly now this all make sence just one question the 15 wires that need to be moved / cut are thoes in one plug or in all plugs by the way both trucks are 02 dc v6 3.4, and did you wire the truck to start or used the clutch start button , I ask because I was able to score a clutch start button with plug & wires that goes on the left on a ex cab taco & since the ect button will have no use after the swap could that be used wire in to start like oem truck or am I opening up a hole new mess , what did you do
::sigh::

Dude, did you even read my PDF?

Sorry to get all school teacher on you, but download it from here:

http://www.well.com/user/mosk/images...ma_ECUs_v2.pdf

Click the link on the title page to take you to the section for the 2002 5VZ Tacoma, or go to page 106 (same thing).

At the beginning of each section is a diagram showing you the connectors used by that particular ECU. There are typically 4 connectors. Each connector is labeled the same as it is in the factory service manual (FSM). For the 2002 V6 Tacos, these are E5, E6, E7, and E8. Each of these connectors has a different number of pins. These are numbered. Thus, any given pin has an address, like E5-16 (connector E5, pin 16). Are you with me so far?

Underneath the diagram of the connectors I have a spreadsheet where I list each pin used by the AT and MT ECUs for that model/motor. Each row explains what a given pin does for each type of ECU. The pins are sorted by connector, then pin. I'm on my fucking phone so I can't take a screen shot for you, but this should be obvious if you look at it, as the two left columns list the connector, then the pin.

The next two columns list that pin's function in the Auto ECU, followed by the colors of the wire connected to it. The next two columns repeat this for the Manual ECU.

Here's the important part, and the whole point of the PDF: if a given pin is NOT used by one of the ECUs, the letters NA appear in red in the cells for function and wire color. And if a given pin has one function for AT but a different one for MT, that's called out, too. But you don't have to worry about that for your 2002 as all the wires are either the same or not used by the MT ECU.

Those connections listed as NA are only used by one ECU. For the 2002 V6 Taco, this means the wires labeled NA are the wires used only by the auto trans and NOT used by the manual trans, so when you convert to use the manual trans ECU, those wires can be cut in the AT harness.


Does that make sense? Let me know, because if it doesn't we're at a standstill until it does.

As for the clutch start switch down at the pedal: yes, I hooked mine up.

I have not hooked up the clutch cancel switch in the dash, nor have I hooked up my cruise control. Maybe someday, but maybe never as I don't miss them.

Seriously, let me know if the above makes sense, OK? I'm happy to help, but you have to wrap your head around this spreadsheet to do the ECU swap.
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Converting an early Taco from auto to manual?
My PDF of first gen. Tacoma ECU pinout comparisons will help!

Last edited by mosk22rte; 06-14-2012 at 09:35 AM.
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Old 06-14-2012, 03:52 AM   #733
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Good explanation! I learned something new. I bookmarked that PDF. Thanks.
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Old 06-14-2012, 05:28 AM   #734
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::sigh::
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Old 06-14-2012, 09:10 PM   #735
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Quote:
Originally Posted by mosk22rte View Post
::sigh::

Dude, did you even read my PDF?

Sorry to get all school teacher on you, but download it from here:

http://www.well.com/user/mosk/images...ma_ECUs_v2.pdf

Click the link on the title page to take you to the section for the 2002 5VZ Tacoma, or go to page 106 (same thing).

At the beginning of each section is a diagram showing you the connectors used by that particular ECU. There are typically 4 connectors. Each connector is labeled the same as it is in the factory service manual (FSM). For the 2002 V6 Tacos, these are E5, E6, E7, and E8. Each of these connectors has a different number of pins. These are numbered. Thus, any given pin has an address, like E5-16 (connector E5, pin 16). Are you with me so far?

Underneath the diagram of the connectors I have a spreadsheet where I list each pin used by the AT and MT ECUs for that model/motor. Each row explains what a given pin does for each type of ECU. The pins are sorted by connector, then pin. I'm on my fucking phone so I can't take a screen shot for you, but this should be obvious if you look at it, as the two left columns list the connector, then the pin.

The next two columns list that pin's function in the Auto ECU, followed by the colors of the wire connected to it. The next two columns repeat this for the Manual ECU.

Here's the important part, and the whole point of the PDF: if a given pin is NOT used by one of the ECUs, the letters NA appear in red in the cells for function and wire color. And if a given pin has one function for AT but a different one for MT, that's called out, too. But you don't have to worry about that for your 2002 as all the wires are either the same or not used by the MT ECU.

Those connections listed as NA are only used by one ECU. For the 2002 V6 Taco, this means the wires labeled NA are the wires used only by the auto trans and NOT used by the manual trans, so when you convert to use the manual trans ECU, those wires can be cut in the AT harness.


Does that make sense? Let me know, because if it doesn't we're at a standstill until it does.

As for the clutch start switch down at the pedal: yes, I hooked mine up.

I have not hooked up the clutch cancel switch in the dash, nor have I hooked up my cruise control. Maybe someday, but maybe never as I don't miss them.

Seriously, let me know if the above makes sense, OK? I'm happy to help, but you have to wrap your head around this spreadsheet to do the ECU swap.
here so if I ask question its just to make sure, I like to mesure twice & cut once I did reed the pdf and that was a dumb question on my part but wanted to know we were on the same page for the moment thats about it with the ecu I now have a better understanding of it thank you so much . im haveing a oem flywheel resurf and wanted this urd clutch kit what do you think they say it puts out 450 rear wheel torque hold capacity and my truck is superchared and wanted a bit more power out of it but I havent seen any reviews.
the urd clutch
http://www.urdusa.com/p1260519014/Co...duct_info.html
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Old 06-15-2012, 09:16 AM   #736
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here so if I ask question its just to make sure, I like to mesure twice & cut once I did reed the pdf and that was a dumb question on my part but wanted to know we were on the same page for the moment thats about it with the ecu I now have a better understanding of it thank you so much . im haveing a oem flywheel resurf and wanted this urd clutch kit what do you think they say it puts out 450 rear wheel torque hold capacity and my truck is superchared and wanted a bit more power out of it but I havent seen any reviews.
the urd clutch
http://www.urdusa.com/p1260519014/Co...duct_info.html
Clutches don't give you any horsepower..... they withstand torque...
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Old 06-15-2012, 08:54 PM   #737
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here so if I ask question its just to make sure, I like to mesure twice & cut once I did reed the pdf and that was a dumb question on my part but wanted to know we were on the same page for the moment thats about it with the ecu I now have a better understanding of it thank you so much . im haveing a oem flywheel resurf and wanted this urd clutch kit what do you think they say it puts out 450 rear wheel torque hold capacity and my truck is superchared and wanted a bit more power out of it but I havent seen any reviews.
the urd clutch
http://www.urdusa.com/p1260519014/Co...duct_info.html
Good, glad my explanation makes sense. BTW, you will want to have a copy of the FSM wiring guide handy to figure out the NSW wiring under the trans (that's the stuff covered in Tacoma4Life's diagram, which I mentioned above.)

As for the URD clutch: I'm sure it will hold the motor's power, but I'm not a big fan of ceramic puck clutches on the street or off-road (but think they're great on the track or strip). They are grabby and hard to feather; more like On/Off switches. I prefer organic clutches, much more forgiving. I run an ACT organic and matching pressure plate, maybe their SS model? I think it's rated to hold 390 or 400 ft. lbs. of torque. I bought it to use with a SC, which I have but haven't installed yet. Anyway, you might want to post the clutch question separately to either the Performance or Driveline sub-forum, so you can get opinions from folks who are running it.

Jeff
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Converting an early Taco from auto to manual?
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Old 06-16-2012, 10:18 AM   #738
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I wouldn't run a puck clutch offroad or in a daily driver. Like he said, on/off and kind of a pain.
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Old 06-18-2012, 05:59 PM   #739
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Is saftydang ever going to swap his truck??
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Old 06-18-2012, 07:39 PM   #740
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Good, glad my explanation makes sense. BTW, you will want to have a copy of the FSM wiring guide handy to figure out the NSW wiring under the trans (that's the stuff covered in Tacoma4Life's diagram, which I mentioned above.)

As for the URD clutch: I'm sure it will hold the motor's power, but I'm not a big fan of ceramic puck clutches on the street or off-road (but think they're great on the track or strip). They are grabby and hard to feather; more like On/Off switches. I prefer organic clutches, much more forgiving. I run an ACT organic and matching pressure plate, maybe their SS model? I think it's rated to hold 390 or 400 ft. lbs. of torque. I bought it to use with a SC, which I have but haven't installed yet. Anyway, you might want to post the clutch question separately to either the Performance or Driveline sub-forum, so you can get opinions from folks who are running it.

Jeff

Will do jeff thanks for the info
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Old 06-18-2012, 07:41 PM   #741
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I wouldn't run a puck clutch offroad or in a daily driver. Like he said, on/off and kind of a pain.
Good to know
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Old 06-18-2012, 07:50 PM   #742
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Is saftydang ever going to swap his truck??
Yea whats up with that , is that guy still alive its been a minute hes the reson for us all here good
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Old 06-18-2012, 08:03 PM   #743
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reyess cash, I want to repost some of the info on the NSW portion of the swap, as I referred to Tacoma4Life's NSW wiring diagram when I was posting from my phone and now have the ability to link to it more easily.

Here's what I wrote in a previous post:

Quote:
Refer to Tacoma4Life's extremely excellent wiring chart:



Those are the wires that run to your auto trans. You need to jumper the neutral start switch wires to get the motor started. If you want the OEM functionality of having to depress the clutch to start the truck, those two wires need to be run back into the dash and attached to the clutch depress switch at the bottom of the bracket. If you want the reverse lights to work, you need to run wires from the auto trans plug to the reverse switch on the side of the trans. If you want the cruise control to disengage when you release (depress) the clutch, another two wires need to go from that to the switch at the top of the clutch pedal bracket. All of this is easier if you cut off the automatic trans wiring plug near the end of its harness so you can splice the wires directly.

This post I made earlier in the thread has a little more info on how I did this. It isn't a complete description of what you need to do, but it will help:

http://www.ttora.com/forum/showpost....&postcount=170
That last link will take you to the post where I show what I did on my 2002. It isn't a step-by-step guide, but it will get you most of the way there. The main thing is, you will need the FSM wiring diagram, as the pins of the 2002 are somewhat different than what's in Tacoma4Life's diagram. His diagram is still your goal, but if I recall correctly the pins on the 2002 are either in a different order or the pin numbers have different functions. So you'll need to refer to the FSM to work out the functions of the wires and their pin numbers, and then translate that so that you can make the 2002 wires function the same as Tacoma4Life's diagram.

Be patient, and work it out on paper first, then post here so we can check your work

Jeff
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Old 06-21-2012, 01:34 AM   #744
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thanks jeff this wireing chart will defenetlly be esential to get the trucks started , new flywheel presure plate and asin clutch are here ready to bolt I just need the flywheel,starter,bellhousing bolts, I used the parts number on page 7 of this thred but here in houston they dont have any in the local dealer till fri pluss some part numbers change but i was able to find them so thats were im at, they told me if they dont get them by fri they would have them in back order looks like a trip to the hardware store or yunk yard is blan b but will see by the way did you ever instal the urd short shift im in the market for one
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Old 06-21-2012, 11:01 AM   #745
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Yes, I have the URD short shifter kit. It works fine, nice kit. Not a huge change over stock, but it's an improvement. You have to cut away some of the front edge sheet metal in the shifter opening in the trans tunnel. Not a lot, but perhaps a half inch? It will be obvious when you go to install it.

Good luck with your swap! Post some pics, too
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2002 Tacoma DC V6 PreRunner (converted to 5 speed and 4x4, with some other stuff, too)
1986 turbo 4x4 pickup (my money pit)
-
Converting an early Taco from auto to manual?
My PDF of first gen. Tacoma ECU pinout comparisons will help!
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Old 06-22-2012, 08:57 PM   #746
Damin
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Ahhwww Yeeaaah, just got my computer 89661-04520, 2003 tacoma 5fz 2x4 mt.
Need some belts, a battery and some odds and ends parts! hopefully crank it this week.

ill post pictures if i can figure out how to do that.
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Old 09-30-2012, 10:59 AM   #747
theredhorseman
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So a bit of an update on mine:

After having issues with UPS losing one of my spindles, junkyards sending me ADD units (even after showing them pictures of what a manual hub spindle assembly looks like), and the angry apes at the local dealership taking forever to put new bearings into my spindles...

I finally got all that crap bolted up. About 4 hours worth of work in an apartment parking lot with hand tools and a jack. (my neighbors love me, I'm sure) Including one trip to Ace hardware because I bought the wrong sized nuts for the t-case output studs.
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Old 10-01-2012, 11:17 AM   #748
mosk22rte
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Cool! So...it's now running? Do you have some pictures? Hard enough doing all the work, might as well enjoy some compliments once it's all wrapped up.
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2002 Tacoma DC V6 PreRunner (converted to 5 speed and 4x4, with some other stuff, too)
1986 turbo 4x4 pickup (my money pit)
-
Converting an early Taco from auto to manual?
My PDF of first gen. Tacoma ECU pinout comparisons will help!
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Old 10-01-2012, 02:15 PM   #749
theredhorseman
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Works great so far. I need to dig out the dslr and get some pics.
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Old 10-01-2012, 06:22 PM   #750
theredhorseman
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Quick and dirty phone pics.

Doing OK for ~230,000 miles and lots of tinkering.



And I got myself a new toy

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