1uze30

Amazing effort always ....

Aha

Yes, i still have 2 attached 02 sensor in exhaust. Got it now i will follow your instruction.

Hopefully by this weekend all is set and ready to start.

Regards

Hi Nigel

Thanks for the reply, Yes i forget to mention knock sensor under the plenum.

About the 02 sensor, is it possible to bypass without making ecu using default/base map?

Because my engine got only 2 sensor left, each 1 in the exhaust manifold.

I do agree with you regarding the radiator, i will put the radiator then.

Regards

Hi Nigel

It’s been a while since my last update, so far here what I have been done

1. Trim the wiring

2. Removed unnecessary wires and sensor (2nd TPS, Traction control motor,)

Rewiring these to ECU

1. All 8 injectors

2. Water Temperature sensor

3. Airflow meter

4. Crankcase position sensor

5. Camshaft position sensor (2 of them)

6. Igniters

7. TPS

8. ISC

9. Engine speed sensor

10. ?

Is there anything that I miss ?, assuming i dont run the auto at the moment

Btw hong long does an engine can survice running without radiator?

Regards

yeah, b+ should be constant mate, fused as best practise but not necessary as ecu has a thermal fuse on it's main board for it anyway.

Hi Nigel,

Thanks for everything, i can confirm the check engine now is on.

Next step is to try starting the engine

Thank You Million Times

Regards

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Looking at your diagram I'd say MREL is probably not working (if I remember your issue with the check light), if I remember correctly that doesnt actually turn the efi relay on, but I've noted in the write up that it does and I havent changed that so it probably does.

[edit] nah, it does, I just checked on a 1992 ecu, and it turns it on a relay just fine, but it's an output so it might not turn a light on well though.

- MREL is an ecu output that comes on when the engine is being started, and also comes on for a split second when turned on, thats a bad source of power for the check engine light it wont behave in the right way, you need constant stage two power

- but thats just from memory, I did look over the lextreme diagram and my own work and it appears like that could be causing the issue.

- you dont need to fuse the check engine light.

hope thats helpful

Hi Nigel

Thanks for the update,

My setup for MREL is to trigger EFI Relay which turn ON the connection between +12V to B+

Based on your update , heres what i am going to do

Give +12V directly to B+,

And well see what happened

Best Regards

there is no need to do that, earth in the ecu comes from it's specific earth wires. no reason not too, but nothing in the case connects to casing for an earth.

it does need to be a good earth, and you must have more than 11 volts, and decent amperage to run it, so if your trying something funky with some AA batteries it wont be enough (btw).

Hi Nigel

Yes, i was using 55A car battery, so far i have no issue with it.

So my ecu was align with your wiring diagram right? pin by pin

Best Regards

Btw Here is my wiring to the ecu, please correct me if im wrong.

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