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-   -   MS3X no mainboard trigger signal (https://www.miataturbo.net/megasquirt-18/ms3x-no-mainboard-trigger-signal-93587/)

Philly Miata 06-13-2017 12:18 PM

MS3X no mainboard trigger signal
 
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Setup: self built MS3X, D585 coils, BP4W into 90 chassis/harness with 97 CAS. Been working with Stefanst through FB messenger. Car cranks but no start obviously. We worked through some physical issues and corrected a few things due to me using generic assembly instructions as I was not yet aware of westfield/trubokitty build guides. Using stims, Stefan believes we narrowed the issue down to no trigger signal from the main board. He suggested I bring it to him and/or bite the bullet and post here. I will attach pictures of my board and CSV file from cranking and using the stims for a few minutes. The CSV file is 120 pages because I'm a derp and left it recording for a few minutes but it's obviously the same the whole way through

Disclaimer: ignore the missing components in my pictures, I assembled the thing a few months ago not knowing nearly as much as I do now.

stefanst 06-15-2017 04:07 PM

Just a quick update: I hooked his MS3 up to my JimStim and everything worked just fine. No idea what went wrong before. There clearly wasn't any signal from the CKP earlier, but it's there now. MS3 is installed in the car now and the car starts.

Braineack 06-15-2017 04:09 PM

this isnt going to solve the problem, but youre missing R39.

stefanst 06-15-2017 04:11 PM

The whole FP circuit was missing. It's been solved since.


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