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Megasquirt Lead coil not firing

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Old 05-03-10, 10:45 AM
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Lead coil not firing

I have a ms1 v3 on an S5 6 port turbo. The car was running fine a week ago. Now the trailing coil isnt igniting but the trail is igniting. I swapped out the coil into another car and the other car fired fine So it isnt the coil. I was wondering if anyone had any ideas. I just let it sit a week while I waited and changed the throttle cable.

Last edited by Defiantone; 05-03-10 at 11:07 AM. Reason: I am an idiot
Old 05-03-10, 10:57 AM
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Check the transistor that fires the leading. I think it's the one that connects to D14. I had this go out on me and swapped out like 3 different coilpacks thinking it was the coilpacks. Give that a try.
Old 05-03-10, 10:58 AM
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Check the pullup resistor on D14, and the transistor that turns on that LED.

Ken
Old 05-03-10, 11:05 AM
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I am an idiot its the trailing not firing not the lead :s
Old 05-03-10, 03:36 PM
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with the MS1 code, the trailing doesn't fire below 700ish RPM IIRC... make sure you're spinning faster than this
Old 05-04-10, 04:34 PM
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Ahh yeah, forgot about that, it's been a couple years since I used MS1!

Ken
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