No spark 1993 supra helpp!!

RichChigga47 · 2025-10-01T20:51:07-0400

Help, my car is a 1993 Toyota Supra GE 2JZ. She is right-hand drive. I had issues with the car before. It just all of a sudden cut spark before. It used to drive fine, but it used to be affected by the heat that I noticed. Like, if I idle for too long, then all of a sudden I hear a little misfire in the exhaust, and my car would just turn off. It would just basically start then stall, very smooth, quick, and then it always turned on after a while after trying. But this time, it just doesn't start. I have a code 14 and a 42. The 42 probably doesn't matter. I also had an issue with that on the freeway. I was driving, and all of a sudden my RPMs fell down. I didn't stall, but I was rolling to the breakdown lane, and all of a sudden my RPM moved back where it needed to be, and I had engine power. I changed the ignition control module and the igniter so far, and still nothing. I noticed I had no spark next thing im thinking is the ecu but not sure how to test it ?
And thanks in advance for replies and help

RichChigga47 · 2025-10-01T20:52:10-0400

Help me bring it back to its former glory

RichChigga47 · 2025-10-01T20:52:37-0400

Also any questions feel free to ask

minus500 · 2025-10-02T00:15:31-0400

Have you looked at the distributor cap and rotor? Those would yield ignition issues. Probably worthwhile to go ahead and replace them as part of general maintenance even if they look okay unless you know they've been replaced somewhere along the line. Is there anyone you know locally who has a known good ECU you could throw in to yours? I believe a faulty ECU will present with those systems.

Alex D · 2025-10-02T09:53:44-0400

Send the ECU to Relentless Motorsports to get fixed. Don't even bother with a used one as they will likely have the issue sooner than later.

RichChigga47 · 2025-10-02T09:54:45-0400

Okay I was thinking of doing that I appreciate it
Do you know what the prices are ?

Alex D · 2025-10-02T11:06:22-0400

RichChigga47 said:
Okay I was thinking of doing that I appreciate it
Do you know what the prices are ?

I want to say its around $500 for the full rebuild. Its not cheap but he has a good reputation... you get what you pay for.

RichChigga47 · 2025-10-04T18:56:06-0400

Just wanted to give a update it seems its the ecu, just opened it up and seen blown capacitors
Im going to repair it my self wish me luck
If I fail you'll see this supra for sale
30 dollars obo

RichChigga47 · 2025-10-04T19:02:23-0400

Also FYI I never soldering anything in my life
30 dollar obo supra maybe a thing in upcoming weeks

minus500 · 2025-10-04T20:52:53-0400

Glad we could point you in the right direction. Good luck with the capacitor replacement. Should be fairly straightforward. Get some solder wick to make the desoldering easier.

minus500 · 2025-10-04T22:09:10-0400

Man, I glanced at the pics and noticed the large capacitors without even really noticing the little guys mounted on the board. Those things are toast. Get some 99% Isopropyl alcohol to try to clean that up before desoldering.

RichChigga47 · 2025-10-04T22:35:14-0400

I appreciate the tip, thanks

RichChigga47 · 2025-10-04T22:36:10-0400

I'll send a update when I get to repairing it
Overall its all repairable right ? What do you guys think

minus500 · 2025-10-04T22:50:35-0400

RichChigga47 said:
I'll send a update when I get to repairing it
Overall its all repairable right ? What do you guys think

As long as the board traces aren’t damaged and nothing gets damaged or shorted during the repair, you should end up okay. Honestly though, you’re already in need of a used or rebuilt ECU now, so taking a chance on this repair is really a “freebie” at this point.

No spark 1993 supra helpp!!

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