LoneStarMac

Got off the phone with ORS the other day. Contrary to what's on their web site, they are now saying the 3.4 will bolt right up the the 2nd gen auto tranny, and the 3.4 ECU will control it, no problem.
I know this is great news for me, and I'm sure for a lot of 2nd gen owners also.
Less work less $$...



Chuck

mt_goat

Well I've heard it works ok, but doesn't it take some modification somewhere?

LoneStarMac

Not according to ORS. (outside of the hood/body lift mod)
Apparently all you need is the 3.4 (w/harness and ecu) ORS's harness/kit and
headers or their crossover.
No other adapters needed.
They dropped the auto kit price by over $400.(not on the web site yet)
BTW, thank you Mt. Goat.
If it wasn't for your posts I don't know where I'd be in this. I owe you...
Being a Longhorn, glad your a Cowboy and not a Sooner...
BTW, was your 3.4 supercharged when you bought it or did you add it on.
I am a little nervous buying a used "blown" engine...

Chuck

mt_goat

Well I guess I'm glad I still have my A340H then, maybe I'll use it for a spare tranny.

The donor Taco was stock, I added the SC while the engine was on the stand.

Well, glad I could help but Mike was the one that got me going on it.

Are you coming to Stillwater next Sat for the game? Should be a good game, go Pokes!

One More Time

This would have been extremely helpful 2 freakin' years ago!

mt_goat

There was a guy on here 2 or 3 years ago that used the A340H with a couple 3.4 swaps. Try searching "teamshiftpoint"

Here you go from 2004:
https://www.yotatech.com/forums/f2/3...ks-more-44908/

LoneStarMac

Not in a 240d...
But I will be watchin' on TV...

One More Time

I knew of them...they were being secretive as to what it took to get it to work. It seemed like it took lots of money and modifications...according to this thread, its now direct swap.

n4ynu1010

I want a donor vehicle Goat ......................

mt_goat

Very true, that guy wouldn't share any info.

Dan.3

thefallman has adapted the 340h to work with the 3.4 there are a couple of things you need from the 340f to make the h work. I will be starting the swap very shortly.

thefatkid

Not burst a bubble or anything....

As all know the a340h will bolt directly to the 5vz. The 5vz engine will control the shifting of the a340h but there is a glich.

The tranny speed sensor in the A340h differs from the A340f. The a340h uses a on-off siginal. It is a "switch" that is pulled by a magnet on the output shaft of the transmission to create a open-closed circut. One pulse per revolution.

The a340f speed sensor is a voltage generating circut (AC siginal). The 5vz computer doesn't know what to do with it. 4 pulses per revoultion.

On my 4runner there is a speed sensor check engine light. I don't rember the code at this time. There are 2 speed sensors on a auto tranny, one for shift quality and one for vehicle speed indication. As a fail-safe the ecu looks at the vehicle speed sensor for shifting and lock-up control. This is not very accurate and on my 4runner shifting is delayed (overrev if wide open) and lock-up doesn't stay on very well.

I'm guessing you didn't talk directly to Mike (Paco, Derrick, Brian?), He knows about these issues and we are trying to figure out a cheap way to mimic the siginal. Or you know about the issues but didn't say them in your post. I'll tell him to let the others know about the slight defect.

Don't be too scared about what I'm talking about though, the 4runner shifts ok and runs great now. It will run up I70, 7% grades at 8-11,000 ft at 70mph.

mt_goat

Is that the sensor from the hole here:

thefatkid

No, I don't have a picture to show you. It is in the middle, inbetween the tranny and t-case.

edit: oppsite side of the tranny

thefallman

I have the same CEL code, btw the CODE is P1700. thefatkid came over the other day and we were discussing how to possibly solve this issue. I hadnt had a chance to get back to him, but while i was downloading wiring diagrams the other day i ran accross something. 2nd gen 4runners had a Voltage Generating "A/C" Speed sensor for abs located on the rear diff. It may be that we could some how use the parts for this sensor to make our own Voltage Generating circuit for the 3.4

BTW even with my swap to a T100 Transmission i still have the same CEL because the T100 5vzfe ECU used the same speed sensor as the A340H did.
This is another possible solution for those wanting to keep the A340H. You could use a 3.4 Engine Harness and ECU from a T100.

thefatkid and i have both had conversations with Mike at ORS about the A340H and if you dont mind your CEL light being on constantly go for the swap otherwise we have yet to work out a perm solution for the speed sensor issue.

Btw teamshiftpoint refuses to answer any questions or return calls or emails. i have asked repeatedly for them to either provide me with some tips or if they would provide the hardware and they refuse. I tend to believe that there solution may not have worked as well as they thought it would. From the info i gatherd though what they said they did. They modified the rotor in the A340H to be similar to the A340F and create 4 pulses per rotation and then drilled the hole in the Transfercase adapter to accept the larger A340F Speed sensor.

Here is a picture of the A340H speed sensor



I will post pictures up tomorrow of the actual sensors when pulled from the transmissions.

i have the T100 A340F Sensor along with the regular A340H and A340F sensors.

thefallman

Arrow points to Sensor

Btw the sensor on the T100 A340F is on the opposite side from that of the A340H or the Tacoma/4runner A340F. It seems that the only real differnce between the T100 A340F and the 2nd Gen 4runner 4cyl A340F is the valve body.

Tim_Snapple76

just a few more things to work out. this is setting me up to want to try and find a donor vehicle. when my headgasket goes or i blow my 3vz i'll just drop in the ole 3 fo. cel or not. thanks guys, especially folks like ya'll doing the research on this. you're saving people alot of money.

mt_goat

So it sounds like someone could make a little piggy back computer that would take the one pulse/revolution signal and quadruple the output in an AC signal.
Maybe talk to Split Second about making one.

Dan.3

simple solution to turn the cel light off for the speed sensor. just take out the bulb. by the way wont this work??? http://board.marlincrawler.com/index.php?topic=30862.0

thefatkid

Goat:
I was thinking of trying to get/make some sort of siginal generator to do what I need. I need to get the 4runner from my Wife and check the siginal with a labscope to be sure of what i'm dealing with. I really only know what the manual says and what i can physically see.

BAMF:
Turning off the CEL is ok, I'd like to know when I have another problem if it occurs (even more because I'm not the primary driver of this vehicle). 2nd, that speed sensor might work with people who already don't have a electronic speed sensor. I know the factory one will not work. The VSS creates a digital wave form that the ECU doesn't like to see for the tranny speed sensor. A AC wave form is needed not a square (digital).

One thing I'm going to try (and talked about with fallman) is using the driveshaft bolts as the pickup for the sensor. Mounting the factory A340f sensor (magnetic pickup) next to a revolving ferrious metal (driveshaft bolts) should generate an AC waveform. Also there are 4 bolts (4 pulse per revolution). The output shaft speed is the same as the driveshaft in all cases except in low range, I have no clue what it would do to shifting.

Fallman:
The ABS sensor might work or be close enough. The only problem is (in my case with 4.56 gears) it would see 11 pulses per revolution.

BTW if you have no speed sensor siginal (front or rear) it will not shift out of 1st gear.