Sr ignition problems

[jacobs13]

So I finally got my sr back in and I had to use a new harness because my old one was ruined. The old harness came with the 62 ecu and the new harness I believe is j4 so I had to repin the ignition wires. No biggie. Before I repinned it it would sputter on 2 cylinders like it was wired to and then when I get all 4 ignition wires right I have no spark at all so I blame the ignitor. I wired in a j30 ignitor and now I have spark in all 4 but its weak. My problem is that I can only start the car if I dry the plugs and cylinders of gas, If I turn the car off it will not start again and the plugs become soaked, so Im assuming its weak spark. My other problem which im sure has to do with alot of this is the ignitor gets hot, really hot and smokes but the wires are not getting warm or anything. Anyone ever have this problem? Ive gone through my wiring and cant see anything wrong. Any help is appreciated.

[KaminaSan]

So I finally got my sr back in and I had to use a new harness because my old one was ruined. The old harness came with the 62 ecu and the new harness I believe is j4 so I had to repin the ignition wires. No biggie. Before I repinned it it would sputter on 2 cylinders like it was wired to and then when I get all 4 ignition wires right I have no spark at all so I blame the ignitor. I wired in a j30 ignitor and now I have spark in all 4 but its weak. My problem is that I can only start the car if I dry the plugs and cylinders of gas, If I turn the car off it will not start again and the plugs become soaked, so Im assuming its weak spark. My other problem which im sure has to do with alot of this is the ignitor gets hot, really hot and smokes but the wires are not getting warm or anything. Anyone ever have this problem? Ive gone through my wiring and cant see anything wrong. Any help is appreciated.

Spark plugs getting soaked sounds more like a fuel issue to me. Have you pulled the rail to check for leaks?

[jacobs13]

The fuel rail seals fine. They are soaked because the spark isn't strong enought to ignite it.

[jacobs13]

I figured it out. Ignition signal number 2 has way too much current. I followed it to the ecu and the ecu is whats giving it the current. Im guessing my ecu is shorted somewhere, anyone know of another circuit that could be putting too much power through the ignition signal?

[KaminaSan]

I figured it out. Ignition signal number 2 has way too much current. I followed it to the ecu and the ecu is whats giving it the current. Im guessing my ecu is shorted somewhere, anyone know of another circuit that could be putting too much power through the ignition signal?

My suggestion would be to stop half assing it, and get the right ecu, for the right harness.

[jacobs13]

How is it half assing? Many people have done it and I know what im doing. Its a 5 wire depin. Im not gonna buy a new harness and or ecu because of a simple depinning job.

[KaminaSan]

How is it half assing? Many people have done it and I know what im doing. Its a 5 wire depin. Im not gonna buy a new harness and or ecu because of a simple depinning job.

It's obviously not that simple of a job, if you are frying ecus, and running on 1/4 spark.

If you did fry something, you are looking at a new ECU anyways. I just think this is gonna cause more headaches for you, but to each his own.

Good luck.

[jacobs13]

It is a simplr job you just don't know what your talking about. I'm not frying ecus I'm just trying to see if anyone knows if there is another circuit contributing to the ignition signals from the ecu.

[Darren]

It is a simplr job you just don't know what your talking about. I'm not frying ecus I'm just trying to see if anyone knows if there is another circuit contributing to the ignition signals from the ecu.

Telling people they don't know what they're talking about will get you the information you're looking for... pretty sure...

[codyace]

Are you using the FSM?

ECU outputs to the ignitor, which translates the signal to 5v signal to the Coil packs. The coil packs alone have a 12v, the 5v signal, and a Ground.

If it's getting more than 5v on the signal side, then I'd be looking for a faulty ignitor mor than anything (which usually doesn't fail in that sense, as they normally just quit working)


Spark plugs getting soaked sounds more like a fuel issue to me. Have you pulled the rail to check for leaks?

If the plugs are soaked, then it's obviously getting fuel...This side of WAY to much fuel, essentially unregulated fuel pressure, a fuel issue usually results in dry plugs.


My suggestion would be to stop half assing it, and get the right ecu, for the right harness.

What's he half asssing? He's troubleshooting. Changing parts is half assing, troubleshooting is not. The ECU's all output the same(albiet pins are different IIRC) way, and utilize the ignitor the same way (aside from S15).

Telling people they don't know what they're talking about will get you the information you're looking for... pretty sure...

The thing is, the person he's telling that too really doesn't have a clue either...which is why I'll gladly help.

[Darren]

The thing is, the person he's telling that too really doesn't have a clue either...which is why I'll gladly help.

Not suggesting people can't or won't help, just saying that you're not going to get the help you desire by telling people off...

And OP... listen to cody ... from everything i've read, he knows what he's talking about...

Edit: OP mentioned something about the ignitor smoking... wouldn't that be a good indication of incorrect / bad wiring somewhere?

[codyace]

Not suggesting people can't or won't help, just saying that you're not going to get the help you desire by telling people off...

Without a doubt, but that guy did need to be told off a little as he was 'blowing smoke' just like the OP's ignitor hehe.


Edit: OP mentioned something about the ignitor smoking... wouldn't that be a good indication of incorrect / bad wiring somewhere?

Hard to say really, as those ignitors can simply internally fail as well causing all sorts of issues. That's why to me it's easist to just reference their output to make sure it all works.

[jacobs13]

^^^ If you read through you would see why its smoking. I know cody knows what he's talking about, he is someone who can help which is why I posted the thread not for people to tell me I'm half assing when I'm doing the opposite.

Cody, thanks for the input. I have 3 different ignitors I've been using, one stock sr and two j30s. If I have ignition wire #2 on the the ecu output side the ignitor gets super hot. When the ignition is one the output from the ecu read 2.6v or so when the others read.1 or .2. The coil packs have 12v but I need to see if the signal is 5v. I can run the motor if I unplug injector 2 and disconnect ignition number 2 from the ecu so they ignitor doesn't cook. I also bypassed a wire from the ecu ignition #2 pin straight to the coil pack and it got hot so I'm pretty sure there is no short in my harness from the ecu to ignitor

[KaminaSan]

Without a doubt, but that guy did need to be told off a little as he was 'blowing smoke' just like the OP's ignitor hehe.



Hard to say really, as those ignitors can simply internally fail as well causing all sorts of issues. That's why to me it's easist to just reference their output to make sure it all works.


How am I blowing smoke? I told the op what he needs to do to fix his problem, so that he doesn't run into even more issues after ripping his ecu and wiring harness apart.
I don't see what's so bad about that.

[jacobs13]

^^^ I dont want to go out and buy parts when I dont need them. I like to figure out what and why before I buy anything if I even need to, this way I learn more along the way. Anyone can throw parts on a car, I want to understand it and know whats going on.

[GSXRJJordan]

What voltages are you reading from the ECU's ignition signal?

I'm guessing you either have some funky pinning going on at the ECU, or at the igniter. Check the FSM for igniter troubleshooting/testing, then do continuity checks on your igniter to ECU wiring.

[jacobs13]

I got .1v on all ecu outputs except for ignition signal number 2 it was a little over 2v. When I connect #2 to #2 on the ignitor it has a little spark and the ignitor will get hot in about 10 seconds. Ill double check for continuity. The harness was originally with this motor in an s13 with a power fc. All I did was wire it into my s14 and depinned the j4 harness to worth with the 62 ecu

[KaminaSan]

^^^ I dont want to go out and buy parts when I dont need them. I like to figure out what and why before I buy anything if I even need to, this way I learn more along the way. Anyone can throw parts on a car, I want to understand it and know whats going on.

Well, I stand corrected. If you have the time to be messing around with the car, by all means go for it. I'm just saying what comes to mind from the perspective of someone who needs the car for driving.

If you have all the time you want, my bad.

Either way, good luck. I'll stay out of it =)

[jacobs13]

Alright so I bypassed the ignition system from the coil packs, through the ignitor to the ecu with some spare plugs and wires and still got the same result. Too much power from ignition signal #2 on the ecu. About 2v when off and 4v when running. Im guessing there is a short in my harness somewhere causes #2 too much power, anybody have any idea on what circuits I should be looking for a short in? Also the 5v signal on the coilpacks was reading 12v on all but only #2 gets hot and will buzz a little when I plug it in.