2JZ-GE PnP wiring guide

[Supra Guy Scotty]

hey,

i followed this thread dne to the tea in a mx83 im currently doin a aristo 2jz-ge and i can get the motor to start and idle fine but than the problems start:
- engine wont rev freely stuters once revs pick up
- temp gauge shoo straight up as if itsover heated even wen the motors stone cold and just been startedive tryed to sort the [roblem out cant ind any faults with my wiring nor the motor or any thing else im kinda leadin to a voltage breakdown in th coil/ignitor supliy witch may be the problem with the revin but ive used the stock coil/ignitor wire from the mx83 cressida any other ideas i should check would b great etha for the temp gauge and the revin problem

i know this a celica/supra sitebutthis is the only topic outlinin the procedure for wiring the 2jz-ge that im able to find ive searched many sites for days/weeks and cant find any thing to help me out so any info would be much helped

thnak you kindly,
antony..

fixed the rev problem i had the nsw wired up wrong... still got the temp problem dont know why.ive swapped the senders round and used the 7m one still does the same thing.

What is the "NSW" and how did you have it wired wrong? I am dealing with some kind of wiring problem with my 2J in my MKIII that seems to be causing the same kind of rev problem. Any help and insight would be GREATLY appreciated! Thanks in advance!

Scotty

[bevani]

"NSW" netural start switch

[Supra Guy Scotty]

- engine wont rev freely stuters once revs pick up

fixed the rev problem i had the nsw wired up wrong... still got the temp problem dont know why.ive swapped the senders round and used the 7m one still does the same thing.

"NSW" netural start switch

Thanks for clearing that up, but I'm still confused as to how that could be wired wrong, and allow the car to even run. I need to know what what changed to make the car actually rev after being fixed. I'm pulling my hair out over here with the same symptoms!

Scotty

[mrjlogan]

Ok, i figured out my problems and i finally got it fired up today. I was having trouble with the factory alarm system and that's why it wasn't starting. It wasn't engaging the starter relay. I had to cut the thin red wire from the starter relay and ground it. For the fuel pump, i depinned the circuit opening relay for the 2 wires that switch the fuel pump on, and made a jumper wire for them.

[supradames11]

DOIN A 2JZGE SWAP OUT A GS300 95 BUT WANT TO KEEP THE CAR AT..p-type 86..i dont 5'speed way..just auto...anyone!

[Lee_MA61]

DOIN A 2JZGE SWAP OUT A GS300 95 BUT WANT TO KEEP THE CAR AT..p-type 86..i dont 5'speed way..just auto...anyone!

same setup just make sure the NSW is wired in. I haven't updated this for quite sometime. As for the auto stuff everything is controlled VIA the ECU. So just keep all the wiring intact and you'll be ok. Past the wiring I'm not sure what else you'll have to do. If you run into problems just PM/post and we'll try to work it out.

-Leon

[ccwhit7]

@ krazya

Do your plugs on your harness look like this?



Let me know and I'll write something up for you. Then add it to the first post for people using your setup.

Thanks,
Leon

Mine look like that...

[ccwhit7]

Well followed all the ways thru this guide which was great help... Been tracing a no spark issue. I got reverse lights temp gauge , Check all pins to power ecu and they have correct voltage . Got fuel pump working , got everything but spark. Change ignitor coils wires caps rotors dizzy checked timing . All the common crap still nada but a engine turning over with fuel and all body and dash working .. Do not know if rpms work as it has not fired off yet.. It a 2jge in mx73 .. kinda same as mk2 . using 96sc300 ecu with 94 ,k4 wiring harness

[bklynsupraman]

Have you checked to make sure the power source actually has power. I run into similar issue. Mine started and runs but no power to idle air control valve, so it would idle all bouncy like. I double, triple checked wiring and after Leon told me to check if there was power AT the IACV it turned out there was none. The 12v source/wire/plug I used from body of car didn't have powe which i found particularly odd as they all branch from the same main 12v source. Confirmed this by pulling insulation off wires in parted out 6m chassis. So in essence make sure you're getting power from the source you're using for injectors. Good luck.

[ccwhit7]

More like i am not getting power to the ignitor... I changed 12 volt sorces and still no power to ignitor I have not went into iacv and injector part yet as car has not spark to fire. But thanks i will go ahead and check that also