1UZ Conversion Power Issues

[Hurricane]

nath just msg me and said NSW was connected (not sure what power was there or not) not sure if it should be, who ever he is currently talking with said it should not be for a manual setup.

ecu i think was some random year LS400 thats really hard to find? so swapping has been a pain in the ass.

ill pass the info onto nath and post back if he doesnt

[nathanshnoz]

nath just msg me and said NSW was connected (not sure what power was there or not) not sure if it should be, who ever he is currently talking with said it should not be for a manual setup.

ecu i think was some random year LS400 thats really hard to find? so swapping has been a pain in the ass.

ill pass the info onto nath and post back if he doesnt

hey guys,

sorry i haven't replied to anyone. for some reason i haven't been getting notifications from this thread. dan told me there were a few replies on here. i have a bloke from New Zealand who runs a workshop specializing in 1UZ conversions and in fixing 'broken' conversions. I have paid him for his assistance, which is only fair and its a very reasonable price. I do however, have an agreement with him not to disclose exact details of the work i am doing to rectify the situation, since he makes a living off it i have to respect that. I am however, more than happy to pass his details/website onto anyone reading this in the future who has run into these problems. PM me if your interested and i'll pass his detials onto you.

i still have not fully solved the problem yet and will let everyone know when we manage to fix the problem.

all i can say is quite a large number of problems have been found in the wiring of the conversion to begin with

cheers and thanks for all the advice i'll investigate what people have suggested

[nathanshnoz]

sorry accidental repost

[George]

BOTH sta/nsw pins should be connected PROPERLY
when both are disconnected, the result is not devastating with m/t. Only some minor problems may arise. Go disconnect em both for a while and see if something changes

[dumbass]

Fk u should have sent me the loom
I've done over 120 1uz looms

[cresslux]

disconnect the nsw wire, as its not needed, but the sta wire must be connected to the starter motor trigger wiring, as it is what lets the ecu know you are starting the engine. i had all kind if strange issues with my 1jz when neither were connected, would work fine under load, but would idle like shit when in neutral and would stall alot. if i bridged the nsw and sta wires, the car thinks im in neutral all the time and run fine, but had NO power (as in a BHG 7m on 5 cyls would be faster). really is worth a shot.

[dumbass]

Most engines should run ok with sat and nsw disconnected
I have had some 1j have a rev limiter if any of those wires are hooked up wrong
Sta signal is normally for cranking enrichment apart from that if its not much of an issue if not hooked up
U might have had other issues too cresslux
It's good to have them hooked up but u need to do it right
Nsw is before inhibitor and should not connect to starter solenoid unless u have gear lever in park or neutral
Nsw gets a ground feedback thru starter solenoid which causes issues on some ecus
Having wired over 700 Toyota looms I haven't found which ecus causes issues as I always wire them correctly in the first place
If its manual I normally leave nsw off and just connect sta directly to fat starter wire
Most problems I find with backyard wiring is the relays and battery back up power
If this isn't right ecu won't reset properly
Kelvin from shop in New Zealand is good with 1uzs we always help each other out
I don't like giving much info out over the phone or email unless I do the wiring loom from the start
Then I don't mind even talking over the phone for three or more hours if I have too to get it all sorted
That's all included in the price

Are u getting code 12 instantly after resetting ecu and starting it
Or does it come on after the engine starts to play up
Like is code 12 happening after engine starts to misfire or piss and fart
Or is it coming up with code 12 after 10 seconds of engine running

U need some diagnosing skills. Hehehehe

[Hurricane]

code 12 was comming up right away without even starting the car, not sure what its doin now though?

sounds like nath might be on track though with the help of a NZ guy.

dan.