Ive been reading on here about 3400 swap into a 93 4Runner 3.0l. I have been hearing that with an auto, the harness will not work. I'm guessing newer engine has different type of plugs. Ive also read that with some creative work some have got it to work. Has anyone tried to merge the two harnesses... use the plugs and a length of the old harness and adapt it to the new harness where those plugs are different style???

 

You need to do some more reading.

:wabbit2:

 

wow.. very helpful... thx

 

Seriously, dude, attitude won't help here. The topic of wiring has been covered in countless posts within the 3.4 swap section. The subject of the automatic tranny and wiring has been covered countless times.

Try that "Google" thing...I hear it works well.

 

What do you mean that "you have been hearing" that the swap wont work with an auto harness??

Of course it will. If you have the auto trans from your donor then really nothing has changed.

Merged what two harnesses?

I think that you first need to read more as suggested. Then make your questions clearer and more direct rather than vague generalization about stuff your "heard" on the internet.

There is a lot of help to be had here. Probably more than anywhere on the net and everyone that routinely posts in this forum is friendly as well.

Being a smartass is probably the best way to avoid that help however.

 

No scarcasm in my voice.... just making a simple comment.. sarcasm could have come much more obvious... no worries.

just what i read in 2 articles... now they were dated 2006 so that was long ago, I'm sure things have changed

No i dont have donor trans, Im using my factory 3.0 trans, I should have mentioned that. Yes obvioulsy if you using all same engine and drive train nothing has changed.

using the 97 3400 harness, and my 3.0 / auto harness. Think of this cut at the top of the bell housing ( or where ever the harness passes the engine and travels down along the tranny. and wire by wire swap over my tranny plugs for what is on the donor 3400 harness tranns plugs. Yes pinouts are needed

obviously

 

Assuming that you mean that you have the factory 3.0 auto; 340H tranny??

If so I cant help with that. I know its a clusterfrig to get going from what the guys here have gone through. I didnt go that route. Honestly every time I read through a thread about someone trying to get there 340H to work, I always wonder why not just source a 340F and have it setup with the factory ECM that came with the 3.4 and call it a day. Seems about 10 times easier and the 340F is suppose to be a much better tranny as well.

There are some guys that have done it here and its working fine. Maybe they will post up.

Are you in California and need it smog legal??

 

ok sponge bob.... really factory... No i have an aftermarket 3.0 tranny, but wait even they use factory plugs.

yes but for the money......
Nope... Ore-gon, no emissions for me. or not like Cali... Ive lived there I know the expectation.

 

must be nice not to have to DEQ.....even my '81 has to get sniffed every two years

 

jvbutter cut the attitude now. This is the only warning you're getting. These guys are trying to help you. Your questions are vague at best.

State what you have and what you're planing to use.
The best thing to do with the wiring is keep the transmission wires from your 3.0 and either splice them into the 3.4 harness or run them to the computer and repin them. As far as mating the 3.0 body harness wires to the 3.4 wires. I sourced the matching plugs for both sides and made an adapter that was plug and play. Or you could just repin the 3.4 body plugs to the 3.0 plugs so it plugs right in. Other than that my only other advice is to read all the 3.4 swap write ups and take notes of what will help specifically for your application.

 

I dont think guys like that even know how much help is here. I hope he cleans it up. Or his runner may be parked for a long time.

 

97 4Runner auto wiring harness plugs are different from any other year from manual to auto.

I chose to get a manual wiring harness and ecu so I'd have no codes when tapping into my 3.0 auto body harness and using a 3.0 5 spd.

Yes you are going to have to find the wiring diagrams, compare functions and swap pinouts.

This forum section is a plethora of information and is about as close a "3.4 swap for dummies" section as you will find.

This is a great forum for information but folks quickly determine who has put forth effort by the quality of questions asked. If you don't get the answer you like, ask better questions. Some very smart Toyota guys here that are willing to help but most aren't going to put up with condescension.

:wabbit2:

 

ocdropzone: you live in Portland right... yes you have smog, its us guys out here in the West side dont have if you live in the right "county"

vital22re: nuff said... got your point.

Trebor:If i have done any reading at all, I would have realized there was 5 Sticky threads on the subject of "project started" I think about 5 pages minimum in the threads... this does not count other pages that I'm sure have fallen down in the ranks. And also the "build your own crossover, wiring theory threads. So yes, there is loads of info on these boards, just as this isn't the only forum out there for topics in which people are obsessed, I too am not new to forums and there vast help by people all across the nation / globe.

A teacher once told me, if you like something, there is someone on the net that is obsessed with it.

 

Jeezz...what a piss ant. Honestly you sound like a spoiled 19 year old kid.

I am done with this one.

Good luck to you. Sorry for trying to help

 

I think everyone should. I have done 5 and all i got was help. Thanks guys.