[PSIG]

If the tooth log tallies with the wheel, what is my best next move?

Just to eliminate the possibility of different versions, I would first compare the decoder's coded 36-2-2-2 pattern to your physical wheel, for any differences in (-2) placement. This is why I posted all that info. For example, 9 teeth between the (-2-2) and the (-2), rather than 12 or whatever it is.

Looking to confirm exact match of reality versus expected. While uncommon, this has been an issue with other decoders and multiple unknown factory versions of wheels. If that confirms OK, I would confirm expected functions (e.g., rpm, INJ and IGN output, etc), I would review settings carefully, and go from there.

[LPG2CV]

Yes, @jonbill is correct, and I think we have been talking cross purposes.

The VE and spark tables should for TPS be scaled 0-100 on the left hand side. They do not have to be spread evenly, and it may be better to keep the lower numbers with less distance between them.

[jonbill]

I've just realised that the EJ25 is a 4 cylinder - I thought it was a 6 :
but anyway - the (first) tooth log pattern looks right to me.
the data log is very strange : very little changes through the log - the only thing thats interesting is at around 6.7 seconds vbat goes from 0 to 5.5 and then flits around up to 11 and then back down to 0, and at the same time MAP goes from 100 to 93 and back to 100.
what's actually going on here? are you connecting a battery and cranking, or?
what speeduino board do you have? is it UA4C?
is it connected to the car battery?
are the temp sensors and TPS calibrated?
how did you make the tune? did you start with the base tune from speedyloader or elsewhere?
sorry for lots of questions, but I think something pretty fundamental is wrong.

[Laudper]

I've just realised that the EJ25 is a 4 cylinder - I thought it was a 6 :
but anyway - the (first) tooth log pattern looks right to me.
the data log is very strange : very little changes through the log - the only thing thats interesting is at around 6.7 seconds vbat goes from 0 to 5.5 and then flits around up to 11 and then back down to 0, and at the same time MAP goes from 100 to 93 and back to 100.
what's actually going on here? are you connecting a battery and cranking, or?
what speeduino board do you have? is it UA4C?
is it connected to the car battery?
are the temp sensors and TPS calibrated?
how did you make the tune? did you start with the base tune from speedyloader or elsewhere?
sorry for lots of questions, but I think something pretty fundamental is wrong.

Thanks for taking the time to have a look.

It's a UA4C and I have built the tune rather than taking a base tune. The log should be recording whilst cranking, but in truth it's all so new to me I may well have recorded something in error. I am going to run a rule over the wiring at the end of this week and then I'll post a new log that hopefully has more to say.

TPS is calibrated, but I haven't got any info to calibrate the temp sensors against. I think I may be in the territory of putting the temp sensors in a beaker of water and taking resistance readings!? Thanks again for the help

[Laudper]

If the tooth log tallies with the wheel, what is my best next move?

Just to eliminate the possibility of different versions, I would first compare the decoder's coded 36-2-2-2 pattern to your physical wheel, for any differences in (-2) placement. This is why I posted all that info. For example, 9 teeth between the (-2-2) and the (-2), rather than 12 or whatever it is.

Looking to confirm exact match of reality versus expected. While uncommon, this has been an issue with other decoders and multiple unknown factory versions of wheels. If that confirms OK, I would confirm expected functions (e.g., rpm, INJ and IGN output, etc), I would review settings carefully, and go from there.

Great - thanks for the steer. I'll check it out later in the week and report back!

[Laudper]

Hi everyone,

Thanks for all your help so far. I have gone through all the wiring and replaced the crank sensor. The attached logs and tune should make more sense now, although it still isn't firing and I can't get a NOID light to function on the injectors. (Although if i ground them directly they flash.) That said, the tooth log looks cleaner.

Grateful for any thoughts on what to do next.

[jonbill]

That's looking better - you've got sync and rpm so I think the trigger pattern is OK now. But the battery V is still low and the cranking rpm is slow - which you'd get from a weak battery. Can you sketch how the speeduino and injectors are wired ?
the temp sensors (and TPS?) still aren't calibrated.

[Laudper]

Hopefully this makes sense. The speeduino is grounded to the engine block.

TPS is calibrated. Temp sensors not yet!

[jonbill]

Is the speeduino powered from the same relay?

[Laudper]

No. It has its own relay