Vanquizor wrote:If I'm reading it right it looks like 10ms of fuel x4 per cycle and 15 degrees spark lead at 200RPM
Yep you are reading it right. According to dodge_neon.c it would switch from IM_SIMULTANEOUS to IM_SEQUENTIAL at 550rpm. Fuel would also switch from x4 10ms to x1 3ms.
we are WAY advanced but the timing is stable. I thinks its firing 15 advance but in reality it is more like 65 advanced. Not sure if I should be correcting for this in with global trigger offset or ignition offset... I imagine either would work for current purposes.
looks like I spoke too soon- I can get the timing close using a global offset of 430 and swapping the coils (not sure why but using a value of 610 with the original config did not work out) fly in the ointment is that the ignition is not stable as I originally thought- just the second event was so far away it wasn't within the strobe of my timing light till I got things closer to dialed in. Again by eyeball the second ignition point is 60-70 degrees from the first.
I don't think its worth chasing which coil is which till the timing is stable- I could have easily mixed them up pulling the wire from the coil to frank too.
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Vanquizor wrote:no change in setup jumper installed pe8-pa8
Nothing unexpected in this log The trigger looks perfect, PA8 input capture confirms that PE8 (spark #1/#4) is going what is was supposed to do.
The summary of the phone call is that we have stable but wrong spark behavior: in addition to 15 BTDC spark which is expected, there is another one at around 75 BTDC. So good news there is some logic in this and it's not just random sparking, but bad news is that this 75 BTDC should not be there.
So there was stumbling, coughing and a backfire of epic proportions which launched the throttle body clean off the intake... Timing needs work, and I think we are way lean after start. I got it to pickup a couple times playing with the timing but it seemed to starve out immediately.
Other observations- is it possible we have our ignition output inverted or something? Coils and driver heatsink gets REAL hot if I leave the switch on but am not cranking.
Yes inverted is possible, as I have no idea what polarity is required for the J701. Does the coil conduct current when there is not cranking signal? I would think we can verify that there is no current when it's not running, and that should verify if the polarity is correct or not.
There are four pin modes. As a matter of fact, it is inverted because i believe thats the way some of ignition modules are controlled. You can test this by manually supplying 5v while spark is in the air. If it sparks when you take it off or if it sparks when you turn voltage on?
Jared says you need non-inverted igniter control? That's set_ignition_pin_mode 0 + writeconfig + MCU reset (since that's an electrical change, this requires a reset)
Looks like we got the ignition sorted... also of note is that moving the global trigger by 10 actually moves the timing by 20 crank degrees. All my work to swap coils and change it by 100 or so actually meant a real change of only 20 degrees (+200 -180 net 20)
Not sure what I'm battling at this point... I'm getting a good cough followed by a backfire. Unfortunately I've run down the battery so I'll play again in the morning. I think the plan is fresh plugs to get a good read on the fuel situation (I think we are VERY rich cranking) followed by a timing sweep.
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I've received your voicemail, it sounded like something from another planet, but resembled a running engine. Please email me a video file, this has to go on youtube
yep it really happened... I grabbed my bosterpack dialed the fuel back and it stumbled to life. I can get it to start but it just plods along then dies probably a little timing and some work on the afterstart fueling will make it run proper. Got a quick command to change the afterstart fuel without affecting the starting fuel?
Yep, "set_whole_fuel_map 4" - that's setting 4ms to the whole running fuel map. Or "set_whole_fuel_map 2.1" if that's what you need.
Let's shoot some video - please-please-please, and let's wire up some sensors. If you have a MAF there is channel #1 which is set for my kind of MAF - mine reports result by current (as oppose to voltage which is more common), or we can wire TPS and implement Alpha-N.