1jz cressy fires but dies instantly?

[Whiplash]

actually there a total of 12 screws and a plastic plug holding back the ecu. i know co si just did it haha.

ok well on mine ive tested all teh coils, replaced all spark plugs (needed to be done anyways), tried a new ignitor opened the ecu up and didnt look like anything was leaking out the capasitors. gettin ecu off a mate to check if its the ecu . if it is it will be time for upgrade.

mine basically cranks over gets ignition then bam straight away it dies. nothing like how danners is. what about the rest?

[Whiplash]

all fixed! was a bad ecu. microtech here we come haha!. cheers to ezra for lending us the ecu

[hamgatan]

Ez to the rescue.... (again!)

[Bowlsclubboy]

Whiplash, you sent me a right hand indicator instead of a left hand!! We bodgied it up for the RWC anyway, it's just back to front lol.

Now that the fkn BHG is fixed on my gfs MA70 (I FKN HOPE ANYWAY) i can start on my cressy again. Going to check loose wires and test the CAS and pull each coil out and look for spark, then going to test the ECU that rich kindly leant me. Then finally i'm going to order an adaptronic with 6x new ignitors. Hope i can get all this shit wired up and tuned in time. Hanging for a drift after missing the last one.

Thanks guys

[Whiplash]

oh sorry man. just sent what i had and showed ya in pic. glad you sorted it out but.

good luck with the car. money down on ecu ey. ordering mine on monday. apparently it takes a week to get here but.

[richzx]

I sent it Express Troy so you should get tomorrow they said because you're out in the sticks.

[Merudo]

1JZ ECU's are getting long in the legs now as well, plenty of them are causing a large variety of problems, so something to keep in mind if the other stuff doesnt work.

Elmo.

Leaking capacitors?

[JP]

The last 3 JZX81 ECU's I've looked at have had leaky Nichicon capacitors on both boards, usually corroding the tracks on the PCB around the base of the caps.

[Ribfeast]

Probably a good idea to proactively replace the capacitors before they leak and damage the tracks. The ones you will need are:

33uf, 35V
15uf, 35V
47uf, 63V
220uf, 10V
100uf, 10V

If anyone finds a supplier for 15µF capacitors please let me know, it is the only one on the list I can't get my hands on (if I get desperate I'll use a 4.7 and a 10 in parallel).

[Bowlsclubboy]

Got richx's ecu today in the mail...nice work aus post!!
Banged it in, turned the key and bam...1jz goodness. Ran like shit but i suppose thats because the pinouts are different.
Paid for my adaptronic today so now i just need to chase a base map, anyone?

Big thankyou for everyone who contributed. It would have been much easier if i was able to actually see a problem but oh well...its in the ecu 'somewhere'
I'll get the ecu back to you asap Rich.

Cheers,
Troy

[richzx]

Cheers Troy at least you know what it was and you didn't have to spend big wads of cash to find out it was the ecu. I put my address on the back of the parcel I think.

[mojo_type]

nice work

bastard ecu *shakes fist*

[JP]

just repaired another 1J ecu with this "fires but dies instantly" problem this morning, this ECU also flagged a code 14.

I replaced all the nichicon caps on the ECU and repaired some corroded tracks on the PCB. The caps that had leaked worst were the 100uf 10V and 33uf 35V, closely followed by the 15uf 35V. Tracks required repair around the 15uf 35V.

I was also not able to source new 15uf 35V caps easily, so used one from an old MX83 7MGE ECU which had a good non-nichicon cap intact on the main PCB.

[hamgatan]

oh shit that wasnt the one i sent u was it JP? i was told that was fine..

[JP]

nah, that one hasn't arrived yet. Should turn up today.

I have a few other broken 1J ecu's here I'm slowly repairing.