My 1JZ-GTE. What car is it from?

[deck-star]

I'm looking into getting a Power FC ECU for my 1jz in a Gen II supra MA61. I don't know what model the engine came from, but from looking at the engine vent hose I can tell its a 2nd generation 1jz.

There seem to be three Power FC models that are relevant:
4E14T05Y Toyota Supra JZA70 1JZ-GTE 90/8-93/5
4E14T05Z Toyota Mark II JZX90 1JZ-GTE 92/10-96/9
4E14T05Z Toyota Soarer JZZ30 1JZ-GTE 91/5-96/8

I remember being able to find the details of the 3SGTE engine through the engine number. Is there a site where I can find the source of this 1JZ engine using the engine number?

Thanks.
............................
It looks like I got my answer. According to bk_:
"It's a JZX81 by the TRC and soarer style turbo compressor outlet (45 degrees). if it is 90 degrees and TRC, it's a JZX90."
So thanks all.

[LeaThaL]

you can just go by the stock ecu, if not put up a pic of the motor and the dudes on here will know what it is from just looking

[deck-star]

Previous owner is a mechanic and he suspected the motor and ecu's were from different cars. Maybe that is why the car has cold start issues. So here are engine pics (I've only got my camera phone ATM).
The ECU at the moment is from a JZA70 I believe.

[deck-star]

I believe this highlighted engine ventilation hose is particular to the 2nd gen of the 1JZ

[big_zop]

JZZ30 and JZX90 share the same ECU pinouts - hence why they have the same Power FC part number, JZA70 are different (but also share with JZX81). What you have to do is find out the ECU connector configuration yours is and match to either one or the other. Im not sure what they are but at least you have somewhere to start searching.

However, all of the ones you have listed will only work with a manual transmission, or unless you happen to have some form of standalone auto control.

[deck-star]

Thanks big zop. I've got an auto, but I want to move to a manual. This really needs to wait a while due to the budget. The new ECU needs to happen fairly soon as the current one has cold start issues for some reason.
So I guess I need to do the manual conversion and the ECU changeover in one hit.

The current ECU is from a JZA70.

[big_zop]

Looks like you will have to wait, unless you can run the auto manually. Not sure how this can be done but have heard of it so might be worth a look for some more info.



I also recently had starting issues, I would just get a click when I went to crank and after a few goes it would start. A good friends who is also an auto electrician said it was the starter and sure enough, the contacts were worn. After it was installed, there were still problems which turned out I had a dead battery as well. When it was replaced, we also installed a power booster to the starter - DIY + info in this thread

You might also want to have a look at the inside of the ECU as often the capacitors become damaged and leak, causing all sorts of issues. Even if you replace them and it doesnt solve your issue, at least you know it will never be a problem again - info this thread

Cheers, Paul

ps - if you want people to help you with your starting problems, might want to add that to the thread title.

[deck-star]

Thanks again big zop.
I've been reading Japlish's thread "1jzgte won't rev past 3.5g": http://www.toymods.net/forums/showthread.php?t=55271
My cars problem is similar, but only when the engine is cold.
I think my cheap fix for the moment is to try another stock ECU and it may pull me out of trouble on the cheap.
I'll look at those capacitors.
Funny thing is I've also got that same starter motor problem. So thanks for that info. I'll study up on that as well!

[LeaThaL]

i can offer a mvautos manual shift computer in trade for the jza70 auto ecu if you wanna stay auto for a little longer and get a new ecu lol

it can be done but its up to budget what not as zop said, but you can by inderpendant auto controls around for cheapish but sometimes its not good as a temp thing as its just more money

[wilbo666]

The part number in the pic that you have posted is JZA70 FYI.


As a note it should be possible to use the existing stock ECU to run the auto and have the power FC run the engine, but this will require a significant amount of stuffing around / wiring

Cheers
Wilbo

[bk_]

I'm looking into getting a Power FC ECU for my 1jz in a Gen II supra MA61. I don't know what model the engine came from, but from looking at the engine vent hose I can tell its a 2nd generation 1jz.
Thanks.

It's a JZX81 by the TRC and soarer style turbo compressor outlet (45 degrees). if it is 90 degrees and TRC, it's a JZX90.

Here's a JZX90:


Also the ECU appears to be from a JZX81 / JZA70 from the pin count.

[deck-star]

I'm going to look into the ECU's capacitors tonight.
If I can fix that on the cheap I'll go for that.
Leathal:
I'm excited to look into the manual shift options. I'll research that sometime. Thanks for the trade offer, but I suspect this ECU's not working too well.
Wilbo666:
Thanks for confirming that ECU to be from an A70. As for using the existing computer for the gearbox and the Power FC running the engine, that sounds too complex to embark on as I'm going manual eventually anyway. However its good to know it can be done, and its good to know I've got some options.
bk:
Great to know its from a JZX81 Mark II. I'll look into those telltale signs.

What is a TRC? "throttle return control"?

Thanks all.
I'll increase your reps guys.

[bk_]

bk:
Great to know its from a JZX81 Mark II. I'll look into those telltale signs.

What is a TRC? "throttle return control"?

Ahhh... My bad. Traction control throttle body - there should be "TRC" label on the top. There was no traction control available for JZZ30 or JZA70.

I'm currently running a JZX81 engine but with JZZ30 auto wiring, JZX90 manual ECU and JZZ30 throttle body, so it's a bit of a frankenstein, heh.

[bk_]

cold start issues might be related to a used / aged / too-small battery, or poor grounding. Does it start up much easier after a run with a few hours to cool down? Since it is a JZA70 ECU, the capacitors are highly probable the cause of the issue, although you'd have running issues, not just cold start.

Just an observation: I also noticed that your throttle body has removed TRC (which stands for TRaCtion I think) sensor and stepper motor, and no TRC label on the top. Also, I noticed it is also running a bleed valve setup. Nothing wrong, just an observation :-)

[deck-star]

bk,

I've actually got two issues. The initial start, and also running the car before the engine is warmed up. This thread was addressed at getting a power fc to address the cold running of the car. I've since thought I may be able to get out of the situation a lot cheaper with capacitor fix or a replacement stock ECU.
--------
I'd imagine the guy who built this wasn't interested in traction control. This could be why the throttle body has the TRC stuff removed. I presume that is mechanically OK, just that you can loose the rear end and have some fun.
Thanks for that info, I'm trying to find out as much as possible about this car.

Maybe the bleed valve is the turbosmart manual boost controller.

My dad's harping on to me about the grounding issue, so I'll have to look at that to keep him happy. I suspect the battery is getting on too. There is such little room left in the engine bay it can only fit a little battery there anyway. I'm not sure about it starting easier after a run then a few hours to cool down.