Plug on harness; ADD 4WD Sensor?

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Mar 9, 2010 | 07:55 PM

#21

ozziesironmanoffroad

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From: Spring Valley, CA

hey 'coug, i think your buddy 4moggers back! INCOGNITO! that being said....
dude, hairbear, cool it man. you started jumping in his arse when he KINDLY explained the difference, no matter how slight, between the two. no need to jump him. come on now.

Mar 9, 2010 | 07:56 PM

#22

DeathCougar

Donny, you're out of your element

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From: Marysville, WA

Quote:

Originally Posted by hairbear65

Thank you so much for schooling me sir...your knowledge is so becoming...if you wanted to make sure the guy had the point why didn't you spell out the ADD for him in the first place...and not have him wondering what an ADD was?..you're making a mountain out of nothing here dude.

You so nicely put "NOT" in caps for your response what'd you expect. You want to school me be my guest.

I've had Toys since 81' , have built numerous rigs from the ground up and could really care less what you wanna call the front end and hub set-ups on the different generations. The ADD is an automatic shift on the fly front axle with the front wheels continously locked at the hub...an auto setup no matter which way you look at it.

The guys best move would be throw a set of Aisins in it and lockem when wants...and he'll save gas and wear and tear on his front end.

Auto setup, yes.

Auto hubs, no.

It is just simply not Auto hubs, that is all there is to it. Auto hubs and Auto disconnect differential do not even work the same. So the OP can understand the difference, allow me to elaborate. Auto hubs rely on a spring and brake drum to effectively lock the hubs in. They only locked when in 4WD, and power was being applied to the front end. To disengage, you simply pulled it back out of 4WD and backed up several feet. They then acted like freewheel hubs, and that system was not shift on the fly.

In 1989, Toyota introduced ADD (Automatic disconnecting differential) which used drive flanges to always lock the front axles to the diff. This meant that you had to have some way to disconnect the front axle from the driveline when the truck was in 2WD. They created a vacuum operated actuator which slides a collar over and disconnects the axle, from the diff thereby effectively disconnecting the diff, from the driveline. This setup was shift on the fly, as once you shifted into 4WD, a sensor would tell a set of vacuum valves to allow vacuum past them, and to the diff which allowed the collar to slide. No need to even get out of the truck.

If Toyota didn't have something called auto hubs, we wouldn't even be having this discussion. I want to make sure that those people who haven't owned Toyota's since 1981 (whatever difference that makes) understand the difference. It is you who are making a mountain out of nothing here, as I believe this website is intended to inform people to specifics of the Toyota brand.

Please move along, no further bickering needs to take place.

Mar 9, 2010 | 08:01 PM

#23

DeathCougar

Donny, you're out of your element

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From: Marysville, WA

Quote:

Originally Posted by hairbear65

This is exactly why you always use the original electronics that came in YOUR truck, with the long block only from the donor vehicle.
__________________

This suggestion when the guy is swapping a 95' 3.0 to a 93' is totally a waste of time and isn't necessary...not one step of it. The 93 3.0 and 95 use the same distributor,knock sensor and oil pressure sending unit, the only possible difference might be at the water inlet at the rear of the intake...if different then swap those between motors.....no need to go pulling an entire harness when it's wires and connectors are over 15yrs old. The ADD wire has been on every 4x4 harness I've come across so far...no matter if its a 4runner or pickup. As long as that vehicle had the option of ADD the plug will be there. I own a 95 with lockouts and guess what?..the plug is there (just double backed and taped) I don't believe Toyota would go thru the expense to delete one wire and create awhole new entire harness...total waste of money.

Schools out..

And if he has Cali emissions, and the donor was federal?

Or if he had manual trans, and the donor was auto?

Or the FACT that 95 uses a mechanical speedo, and 93 was an electronic speedo?

My point still stands as valid, you should always use the wiring harness that came with the truck. By your reasoning, Toyota used the same engine wiring harness from 93-95 in all their 4Runners and Trucks, and we all know that to be simply untrue.

Quote:

Originally Posted by betelnut

My 2wd '95 4Rnr don't have the extra plug you describe on the wiring harness there.

Just noticed this post too......

Last edited by DeathCougar; Mar 9, 2010 at 08:09 PM.

Mar 9, 2010 | 08:18 PM

#24

87hillbillyoter

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From: N. Lake Tahoe/Chico CA

Death Cougar-your the man

Mar 9, 2010 | 08:19 PM

#25

pb4ugotobed

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Quote:

Originally Posted by DeathCougar

Not to mention you have NO IDEA of the condition of the electronics in your donor motor. How long has that motor been sitting in a junkyard, in a field, in the snow/rain/heat/cold/etc. What do you think this does to electronics? I won't even get started on a 20+ year old wiring harness in those same elements... You know your stuff worked. You know you have a MECHANICAL failure meaning all of your electronics are good. If it were an electronic failure, you wouldn't be replacing the engine

It's just not a good idea. Too many variables here. I'll stick with what I know works, rather than 'hope' that knock sensor that's been sitting in the back of farmer hank's field for 10 years is still good...

Mar 9, 2010 | 08:20 PM

#26

hairbear65

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I've been in and under Toys all my life...what I've owned

4runners I've owned 4 95s, 2 94s', 5 93's, 1 92', 2 91s (one of which was a 2dr) and 1 90;...
Pickup, 1 81;, 1 91;, 1 93' and 2 95s.

Or if he had manual trans, and the donor was auto? totally different section of harness

Cali. laws are just G...nuff said

All of the 93s and above with the 3.0s that I've owned or worked on have had the elect. speedo. All I can tell you is what I've run into personally...no books or facts from online sources or Toyota can change that...just cause someone wrote it in a book don't make it right 100% of the time....

Quote:
Originally Posted by betelnut
My 2wd '95 4Rnr don't have the extra plug you describe on the wiring harness there.

Just noticed this post too

DC...my post listed 4x4s as having the same harness...2wd totally different harness I agree

OK...DC...peace...ends now agreed? I love that you're passionate (sp?) about Toys..very cool
Ok this is pointless..Yes?

Last edited by hairbear65; Mar 9, 2010 at 08:26 PM.

Mar 9, 2010 | 08:26 PM

#27

kiyobrown

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From: Tacoma, WA

Quote:

Originally Posted by hairbear65

Ah...ain't worth it....

Couldn't have said it better myself.......

Mar 9, 2010 | 08:36 PM

#28

DeathCougar

Donny, you're out of your element

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From: Marysville, WA

Ends agreed after I make my point on the speedo.

https://www.yotatech.com/forums/f116...4runner-80256/

https://www.yotatech.com/forums/f116...de-42-a-75940/

Speedo cable: Old number: 83710-89190 supercedes to 83710‑35490

Ok, now we are level