[Barthoward54]

EDIT - If you think they are backwards, and in order to to verify before rewiring; disassemble one connector and push the terminals forward (slide the connector housing down the wires a bit) to give enough slack to manually plug the wires in the other order, e.g., upside down. Check carefully that no terminals are touching, or slip an insulator sheet between them. Test for spark on that coil. Success = begin rewiring. No joy = cuss at me a few times and research LS3 wiring.

David

No problem, I have had fun looking at this, maybe I am looking in the wrong places, but it has been entertaining trying to find any information about the 2 different pin outs for these coils and which goes to which....
I have not opened up many connectors before, but it would be simple if I knew how to unlock the terminals and pull them out. (haven't picked up a set of terminal pins yet) in looking at the parts for the terminal. it looks like the white plastic piece needs to be removed first, just not finding the right place to depress to slide it off.... then depress the tang on the spade to slide them out

[PSIG]

Oops, those are the 150-series 'rear-load' (there are also 'pull-to-seat' or P2S in the same Metri-Pack series), so remove the rear retainer (where the wires come out) by popping off each end. Then you can press the single locking tab on each metal terminal inward to allow the terminal to slide out. Depending on the specific construction, the tab may be pushed inward at the little 'window' on the side where it engages (usually under the sealing ring), or from the front in the little slot provided (often called the top of the top-hat shape ).

Check your tab after removal, and you will likely need to bend the tab out again so it will lock on reinsertion. Don't over-bend or overwork the tab or it will break off. For tools, I most often use a large straight pin, hat pin or T-pin, though little flat and pin tools can be made or bought.

David

Metri-pack 150 series female:

Metri-pack_Fem_rear-load.jpg (41.82 KiB) Viewed 8063 times

[Barthoward54]

thanks for the side picture, a simple push the wire into the plug, insert the pin, & pull back on the wire, and presto, the spade comes out. life is simple with the correct knowledge..
in checking all the coils AC DELCO # 12611424, this link has a spec sheet for them https://www.jegs.com/i/ACDelco/065/D510C/10002/-1
I could not find any continuity between any of the pins and the HV spark terminal. so I am assuming that they are all still good.
I am using a 35 amp 14VDC relay #871-1A-3-R1
https://www.mouser.com/ds/2/378/2009829 ... 0-3428.pdf
what amp of fuse should I be using, to feed the coil? is the 10 amp to small?

[Barthoward54]

thought I would post a couple of pictures of how to I pulled out the pins and changed them around, not bad once things came together, now when cranking, the fuse is not blowing. one small step...
now onto the next steps...

[Barthoward54]

looking at my idle setting, that are set up in tunerstudio. there are a couple of items that I am having fun with. first, for the life of me, I can't locate the screen where the high idle is set. before I realized, that I would not be using a spark plug J-type thermocouple , and went with a thermistor, I put in the number of 419, for the temp. it would be nice to change it to a lower number, but so far I am having a fun time finding that correct screen to make the change...to in the area of 150 degrees, where the themistor is located in the valve train...

the next question is about the GM stepper motor settings. in my set up, I am using a 1998 Saturn LS2 throttle body, I am assuming that I would be using the open loop settings, and not the closed loop....
if so I am thinking that I entered in the correct stepper idle values . I have been looking at the wiki page and searching the forums, just want to verify that I have it somewhat in the ball park.
https://speeduino.com/wiki/index.php/Idle

[Barthoward54]

when I found out that the J type spark plug thermocouple would be a little more entertaining at the moment to use. I purchased the thermocouple below, assembled & installed one in the cylinder head on my motor. where from what I am seeing, with an air cooled motor, I am needing a temp sensor, to let the speeduino know when to come down off the high idle.


https://www.mouser.com/datasheet/2/18/A ... 157013.pdf

[PSIG]

first, for the life of me, I can't locate the screen where the high idle is set.

That idle setting in your image is only for on/off idle control. Ignore it as it is grayed-out and inactive. The one you're after with stepper is Startup/Idle > Idle - Closed loop targets.

the next question is about the GM stepper motor settings. in my set up, I am using a 1998 Saturn LS2 throttle body, I am assuming that I would be using the open loop settings, and not the closed loop....

Yes, always begin with Open Loop, to allow settings in steps and find where your IAC functions with your engine for a given rpm range and for step settings. Once tuned well, predictable and stable, then Closed Loop can be tuned much easier knowing how it responds and the range it should be active.

I purchased the thermocouple below, assembled & installed one in the cylinder head on my motor. where from what I am seeing, with an air cooled motor, I am needing a temp sensor, to let the speeduino know when to come down off the high idle.
https://www.mouser.com/datasheet/2/18/A ... 157013.pdf

Now that's a cool thermistor. -40 to 572°F! Anyway, for others tracking this, there are more useful references for use of that sensor under the "Other Related Documents" on this page. Another popular choice for CHT compatible with Speeduino include the little Bosch 0 280 130 012 or 022-906-041 as used on VW air-cooled engines, inexpensive, short 10x1mm straight threads (easy to tap) and easy to calibrate. Lots of options!

David

[Barthoward54]

is it normal for the ground resistance to the to rise when the key is turned on and power applied to the board? I am getting a consistent reading when testing all the speeduino grounds. on pins 9, 10, 12, & 23. was able to post a video on the facebook page,
https://www.facebook.com/groups/1919187 ... _processed
but here are the pictures

also seeing if a datalog file will download, of some cranking with no spark. trying to see if I have things set up right, and just fried the coils, I am still getting a trigger signal out of the coil harness pin C, with using an LED diode.

[PSIG]

Interesting, I haven't actually tried that test, except to verify harness resistance through connections. Hmm. My first and totally random thoughts are that: it shouldn't vary, assuming your other dedicated Speeduino ground pins (except one for sensors) are appropriately grounded (multi-wire on star-ground) on chassis ground (engine block). Grounding resistance also increases with current, so your static results may change when operating. Otherwise, Speeduino does dump regulation into ground, but overall that shouldn't cause an issue with trigger signal ground return (I assume that's the pin you're on?). On the other hand, LS coils are typically and unofficially grounded with both signal and power ground to the engine block, as this tends to reduce noise, especially if not using noise capacitors. You may be onto the source of that, though it would be with other systems beyond Speeduino.

Are you using a noise capacitor between your harness coil V+ and power GND wires or block? That could affect your readings as it charges/discharges with meter or ECM power. Thinking out-loud. What's your base resistance for the bare loom vs on Speeduino, vs coil connected? Let me know if you find anything of interest in your search for clues.

David

[Barthoward54]

[quote=PSIG post_id=35798 time=1560992062 user_id=149]


Are you using a noise capacitor between your harness coil V+ and power GND wires or block? That could affect your readings as it charges/discharges with meter or ECM power. Thinking out-loud. What's your base resistance for the bare loom vs on Speeduino, vs coil connected? Let me know if you find anything of interest in your search for clues.


no I am not using any noise capacitor,
checked for voltage drop, and it is all looking good, at least from everything that I have checked so far.
question, I know I am getting a crank signal out of the coil trigger connector, but with out an oscilloscope, what method is there to see what voltage is coming through the signal? I'm just wanting to verify that I haven't messed things up to bad.
I think I will be ordering some new coils tomorrow, from what I think I am seeing, everything coming from the board is checking out. but it is coming to a dead end once it hits the coils.
would there be a simpler set up than the LS coils?
thanks again for all the help.