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Nathan Roberts
Newbie
Victoria
V8

Posts: 1
Reg: 09-2017

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Wednesday, May 02, 2018 - 02:05 pm, by:  Nathan Roberts (Soarer_guy)

Before putting in major funds to rectify your Soarer issues, please check your ECU first!

ECU requires a torx screwdriver, not a standard screwdriver, or you will strip the heads.

Just had my V8 ECU die. Car will crank but not fire, no power to fuel pump unless bypassed in engine diag port. No spark.

Highly recommend ALL owners check their ECU's, turns out this is not a unique thing. It has been said again and again, but seriously check your ECU BEFORE damage.

ECU had 3-4 capacitors leaking onto the motherboard by the time I checked, and ate the internal traces and so on.

Have an expert with the ECU now that claims he cannot repair it, it is too far gone.
Replaced caps, got 'everything' working, but his test car still will not fire. So, ECU is dead.


Symptoms experienced for a few months before dying:
Had idle surge looping from 1000-1500rpm, sometimes idle sat at 1100rpm, sometimes 200rpm, transmission solenoid error #63 preventing kickdown and correct gear changes, no air conditioner operation, car felt sluggish.
Car would be a slug til 3000rpm then take off better. Car would over fuel, and sometimes smoke.

Replaced IACV 3 times, TPS twice, bought a solenoid for gearbox, nothing worked.
Checked the ECU, and caps were leaking. Bingo.

I cannot find a Japanese ECU anywhere on the internet so am forced into buying an SC400 ECU from before 1994. It is plug and play. It will work. If you buy a california ECU as opposed to federal USA ECU, you will have an error on the dash for a missing oxygen sensor as the California cars have a 3rd cat. There may be a way to stop this warning, people are working on it as we speak. A non California SC400 ECU should not have this error code, as they did not have a 3rd cat. The only other error you may or may not experience is the traction control error if your car has not got traction control (USA cars did have traction control from memory).

Hope this post helps someone not in the know.

Will be putting the SC400 ECU in over the weekend, will report back with news.


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