Megasquirt cold start tuning help
#3
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Probably afterstart enrichment. You'll get the best help if you post your msq and a data log.
Do you have a wideband O2 sensor connected to MS?
Do you have a wideband O2 sensor connected to MS?
#5
adding 15% cranking pulse worked perfectly. Starts and idles without dying the first time now.
I do have a stock BAC valve, but I dont think it works I may have messed up the wiring. I'm not quite sure how to troubleshoot it...any help would be appreciated.
I do have a stock BAC valve, but I dont think it works I may have messed up the wiring. I'm not quite sure how to troubleshoot it...any help would be appreciated.
#6
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Hello, if you think that the wiring is messed up, check wire by wire, and confirm if they are on the correct place, use a multimeter with the Beep.
I think that you can also use a small 12v lamp and see if it glows or dim at the same time the valve was supposed to open (a dashboard lamp will work).
Did you check if there is any voltage on the BAC connector ?
If not, than maybe a damage wire, or the MS.
Other than that see if you change any setting.
Regards.
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#7
Engine, Not Motor
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Also, my answer will depend on what version of the MS you are running. For example, 2.2 and 3 boards require mods to run the BAC. 3.57 boards do not, MS3X does not, MS3-Pro does not.
The BAC itself is two wires: IGN switch 12V on one side and the ECU on the other side (FIdle, Idle, Idle PWM Out depending on the ECU version). Doesn't matter the polarity.
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immanuel__7
2nd Generation Specific (1986-1992)
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09-05-15 10:23 AM