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  1. #1

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    Microsquirt - revenge of the CKP's

    OK so i went ahead and setup microsquirt in my car.
    quick rundown on setup:

    Microsquirt V2.0
    Fuel system = stock setup
    Ignition system = stock setup (MS sending 5v signal to have ICM drive coils)
    crank pickup = used shielded cable from DIYautotune, braided shield is used as ground per instructions and the purple connection is the signal wire. this wire is explicitly routed away from high power wires such as ignition driving and injector wires. I cant do much about the starter location though :/

    Symptoms:

    Cranking the engine, tunerstudio shows 250 RPM's. fine. continous cranking results in backfiring or afterfiring, throttle doesnt help. i doubled the cranking pulse modifer to 400% , no beuno. i feel like timing is off. but i cant get the engine to run to set the trigger offset.
    GM 7X is selected. The other options seem logical for the setup but IDK

    I will post the settings i have under ignition options. and some screenshots


    waiting on my replacement phone to finish updating...
    Is there a master list of the correct settings for running megasquirt on a Saturn stock controls?

  2. #2

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  3. #3
    Approved Vendor ZombieSatty's Avatar
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    Following
    It's not my fault, blame the radiation.

  4. #4
    Resident Electromotive Expert importsdontlikeme's Avatar
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    Definitely sounds like a timing issue.

    Do you have a timing light? Or oscilloscope? Maybe helpful to narrow down if it is a fuel or ignition issue.

    Sorry I'm not of much help, let me know when you're ready to make the switch to Electromotive.


    Sent from my iPhone using Tapatalk Pro

    Interested in a solid engine management system? Ask me about Electromotive engine management.

  5. Likes ZombieSatty liked this post
  6. #5

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    not much luck. put new plugs and and now have a proper 2 wire shielded cable that has the shield grounded to the sensor grounds per microsquirt hardware manual.

  7. #6
    siris's Avatar
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    It's a pretty common issue with MS on these turd buckets. That's why allot of guys run the obd1 icm and let the icm do the heavy lifting.
    72 Charger: pissed me off, on jackstands.
    95 SW1m: Dohc swap. DD. I can haz boost?

  8. #7

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    https://drive.google.com/file/d/0B7C...ew?usp=sharing

    cranking composite log, for the curious

  9. #8

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    You have it set for "Fixed Advance" and then set Timing for Fixed advance at -10 degrees. Why? An engine would run pretty shitty with that kind of timing.

    Change "Fixed Advance" to "Use Table". -- OR -- at least set Fixed Advanced degrees to something reasonable, like 10-15.

    -Dave

  10. #9

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    I have set it at all varieties and it doesn't start.i agree that 10* base timing would be better

    Sent from my Moto G (4) using Tapatalk

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