Computer Problems with Manual Trans Swap

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landcrusher80 said:
The tranny with the tranfercase weights 80+ kg.

Parts you will need for a 1-90 to 12-95:
H151F
Clutch Pedal Assy. with return spring & switch, Clutch Master Cylinder complete, Clutch Tubing & brackets, Slave & hose, Shift Lever Assy, Shift cover, Transfer lever with shorter tie rod, Cross member & rubber mount and a Front &Rear drive shaft.

90311-95008 Seal engine rear oil (90-98 1HZ 1HD HDJ81 MTM) 1
31111-60290 Bell Housing (90-98 1HD HDJ81 MTM) 1
13405-17020 FLYWHEEL Sub Assy (90-98 1HD HDJ81 MTM) 1
90250-10192 Pin straight for flywheel 2
90105-12169 Bolt flywheel set 8
31250-60401 Disk Assy Clutch (94/12- 98 HDJ81 MTM) 1
31210-60162 Clutch Cover Assy (95- 98 HDJ81 MTM) 1
90363-15017 Bearing for Imput Shaft (90-98 FZJ80 1HD HDJ81 HZJ81 MTM) 1
31230-60181 Bearing assy Clutch release (95- 98 HDJ81 MTM) 1
31204-36110 Fork sub ass -clutch release (92/8-98 FZJ80 1HD HDJ81 HZJ81 MTM) 1
90119-10205 Bolt for cover assy clutch 8
31126-60050 Boot clutch release fork release (92/8-98 FZJ80 1HD HDJ81 HZJ81 MTM) 1
31236-3503 Support Release Fork (92/8-98 FZJ80 1HD HDJ81 HZJ81 MTM) 1
58811-60041-03 Console Box Front Color Bluish Gray (90-95 HDJ81 HZJ81 MTM) 1 No stock discontinued
58808-60031 Cover Sub Assy Shifting Hole (90-95 HDJ81 HZJ81 MTM) 1
33555- 60050 Boot Shift lever (92/8-98 FZJ80 1HD HDJ81 HZJ81 MTM) 1
36331-60020 Boot Transfer Shift Lever (92/8-98 FZJ80 1HD HDJ81 HZJ81 MTM) 1
47101-60200 Pedal Sub Assy Break (92/8-98 FZJ80 1HD HDJ81 HZJ81 MTM) 1
31321-14020 Pad Brake Pedal (90-98 FZJ80 1HD HDJ81 HZJ81 MTM) 1
43530-60042 Free Wheel Hub Assy (93/5-95/7 HDJ81 HZJ81 MTM) 2
81860-12100 Lamp Assy Transmission Indicator (92/8-98 FZJ80 1HD HDJ81 HZJ81 MTM) 1
58993-60011 Bracket Console Mount Rear

Cheers,

LandCrusher80

Half of these parts, roughly, are available in the US....

Great list!

:cheers:
 
Half of these parts, roughly, are available in the US....

Great list!

:cheers:

No worries.... that's many many hours digging around in the EPC.

Can you get new H151F in the US? How much $ ?

LandCrusher80
 
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It will come with the 2H input shaft, but I can source the 1HZ input shaft separately.

that's even more interesting ... that I would need when time comes ( and extra 1HD-T for Tencha ) how much if you don't mind ..
 
What are the differences in the H151 and the R151. Can the later be used in a 93? So if I went this route my current transfer case would not be able to be reused? Just trying to ascertain what I am looking at in terms of driveline mods and what not.

Id also like to get more specific as to what is available here in the US. I am very close to time to head to a hot sandy place so I just need to firm up the costs a bit and find out what Ill need to source over there.

My truck is a 93 and the motor is a stock 1fz that I have no plans on modding for power.

Also, with respect to the H55f I was under the impression that the shifter location was a no go for an 80.
 
Correct, I have seen an H55F in an 80, tower was so far forward that he had to bend up a shifter Dr Seuss style to get it to work. You lose the 80 series case too.. which is a drag.
R151F isn't going to stand up well in an 80 IMO.
 
So is the H151F a heavy duty version of the R151F then and if so what are the differences and could the r151 be beefed up. Seems the manual transmissions that will work in a us model fzj80 are rather exotic here and getting a transmission shipped from the middle east may be a tall order. Everything else looks doable though.
 
Yeah, I see the R151 was put behind the 1FZ in the 70 series trucks also so I know one could get it bolted up and running. The problem I see would be getting it to live under an 80. If I am not mistaken the 70 is quite a bit lighter. It is an interesting thought. I don't wheel mine particularly hard, but I do tow with it.
 
Digging this up as I'm considering designing an adaptor for an NV4500 for a less expensive 5-speed route. I know the NV isn't as buttery as a Toyota trans, but they can be had and rebuilt for much cheaper than an overseas model, and should hold up without issue behind the 1FZ. Also, the granny 1st found on some models would be great off-road.

In thinking about telling the ECM what they would like to know... I'm thinking we just trick the transmission into thinking it's in neutral all the time? This should avoid any MILs related to vehicle speed because you can be in neutral at any speed and rev the engine and not throw codes. The one caveat is defeating the key lock, but I'm pretty sure that can be accomplished with a small wiring mod.

As was said earlier, ATF temp sensor is easily bypassed with a resistor. The VSS should not throw errors as long as the vehicle is in neutral. That shouldn't affect the speedo or odo, as those are t-case driven.

Any thoughts welcomed...

-Phil
 
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Digging this up as I'm considering designing an adaptor for an NV4500 for a less expensive 5-speed route. I know the NV isn't as buttery as a Toyota trans, but they can be had and rebuilt for much cheaper than an overseas model, and should hold up without issue behind the 1FZ. Also, the granny 1st found on some models would be great off-road.

In thinking about telling the ECM what they would like to know... I'm thinking we just trick the transmission into thinking it's in neutral all the time? This should avoid any MILs related to vehicle speed because you can be in neutral at any speed and rev the engine and not throw codes. The one caveat is defeating the key lock, but I'm pretty sure that can be accomplished with a small wiring mod.

As was said earlier, ATF temp sensor is easily bypassed with a resistor. The VSS should not throw errors as long as the vehicle is in neutral. That shouldn't affect the speedo or odo, as those are t-case driven.

Any thoughts welcomed...

-Phil

Two and a half years later.....

I've just completed *nearly* all of the mechanical aspects of the H151F swap in a 1997 FZJ80. I am going to try the neutral trick when the manual transmission is in anything other than reverse. I have the 1996 EWD and believe I can overcome the ignition shift lock feature relatively easily, so what I figure out I will make sure to document.

Fooling the ECU into thinking we're in N or R should be easy with a relay, using pins from the PRND indicator connector. I will document what I come up with.

My question is around the VSS/NSS connectors on the factory A343F transmission. In the below diagram pictures I've labeled the four connectors. Can anyone confirm if they are correct?

Thank you!

Edited%252520Tranny%252520pic%2525201.png


Edited%252520Tranny%252520pic%2525202.png


EDIT: THIS IS NOT THE NSS!! The NSS wires are part of the large PRND connector on the (US) passenger side of the factory automatic A343. The B-R (black with red) and B-W (black with white) large gauge wires are jumped to bypass the NSS switch.
 
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As for the shift lock/ignition lock, I am able to confirm that after removing the shift lock/ignition lock computer, I am able to freely move the ignition switch through all positions with PRND indicator disconnected. We'll see if that stays the same when I wire up the PRND connector.
 
In addition, through the EWD page 24, the V2 connector is the ECT (electronically controlled transmission) VSS, which looks to be the second to last connector on the transmission side of the back half of the engine wiring harness. It's location is found by correlating with the transfer case connections. This implies that the ECT VSS is in fact the three wire connector pictured above.

It appears that cruise control will not function without that signal. We'll see if it correlates to a CEL when the PRND connector is wired up as described above.

EDIT:

Maybe I can wire up "park" to the e-brake connector, so that when the e-brake lever is pulled that the PRND connector indicates park :hmm:
 
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Maybe I can wire up "park" to the e-brake connector, so that when the e-brake lever is pulled that the PRND connector indicates park :hmm:

doing a relay circuit sure you will be able .. at least it's possible in my 95 ..
 
doing a relay circuit sure you will be able .. at least it's possible in my 95 ..

I have read your marilu thread many times, but the specifics on how you wired your relays are vague. Do you know what type of relay you used (4 or 5 pin) and where each pin connected?
 
I am going down this route as we speak. I put in a H151f and I am getting CEL all codes related to the auto. I have sourced a 1FZJ ECU w/o and Auto and will plug it in to see if that is all that I need to do to get rid of the CEL. I drove the vehicle with the codes and didnt have any issues with driveability.
 

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