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Old 05-31-2015, 05:38 PM   #1
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Default Updated Firmware, now engine wont fire

I am in desperate need of help. I was having a ton of issues with megasquirt and I thought updating the firmware may help. Well after the update finished and I loaded the previous tune I had, the engine wouldnt fire. Is there a setting that doesnt come a long with a tune that I need to update? I am clueless and pretty screwed right now.

Is there a chance I fried my coils updating the firmware? I also had the following issues loading the map

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Updated Firmware, now engine wont fire-utispuj.png  
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File Type: msl wont start.msl (58.8 KB, 42 views)
File Type: msq CurrentTune 5.31.msq (110.5 KB, 27 views)

Last edited by gr4v3r; 05-31-2015 at 08:04 PM.
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Old 05-31-2015, 06:10 PM   #2
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Here is a data log of the car trying to start
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File Type: msl wont start.msl (58.8 KB, 33 views)
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Old 05-31-2015, 06:11 PM   #3
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What version of megasquirt. Post a log and tune. Did you unplug your coils when flashing, and if not why not.
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Old 05-31-2015, 06:25 PM   #4
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What version of megasquirt. Post a log and tune. Did you unplug your coils when flashing, and if not why not.
I didnt. I am a moron and have been having 1 of the worst days ever. Because I didnt, what is more likely coil issues or firmware issues?

Data log is in the 2nd post
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Old 05-31-2015, 06:28 PM   #5
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What version of megasquirt. Some versions dont burn up coils when flashed. Also my advice is to leave it alone for the day. No need to get mad at it, only makes it harder to fix.
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Old 05-31-2015, 06:32 PM   #6
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What version of megasquirt. Some versions dont burn up coils when flashed. Also my advice is to leave it alone for the day. No need to get mad at it, only makes it harder to fix.
Version 2. I agree I need to step away but 1 big issue is I am not very knowledgeable about this so stepping away only helps me relax, it probably wont fix anything :(
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Old 05-31-2015, 06:33 PM   #7
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But you might have remembered to unplug the coils if you were relaxed. If you have to set the coil output to inverted then its possible they fried. Someone else who has used ms2 will probably chime in.
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Old 05-31-2015, 06:38 PM   #8
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But you might have remembered to unplug the coils if you were relaxed. If you have to set the coil output to inverted then its possible they fried. Someone else who has used ms2 will probably chime in.
Ya I 100% agree with you there.
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Old 05-31-2015, 06:55 PM   #9
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All this talk of possibly frying coils, but that's so easy to check, I'd start there.

No fuel or rpm signal on the log you posted though, no idea where to go from there.
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Old 05-31-2015, 06:55 PM   #10
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Im thinking this error in spark could be a probem

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Old 05-31-2015, 06:59 PM   #11
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All this talk of possibly frying coils, but that's so easy to check, I'd start there.

No fuel or rpm signal on the log you posted though, no idea where to go from there.
I have been searching on how to test because I feel like a fool asking when I am sure the info is out there. I have never touched a coil pack in my life, how can I test them?
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Old 05-31-2015, 07:01 PM   #12
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Pull the spark plugs, make sure the plug has a ground to the block, and check to see if you can see spark while the engine is cranking.

You probably won't see it though, and the coil pack might not necessarily be bad. With no RPM signal it has no idea when to spark.
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Old 05-31-2015, 07:21 PM   #13
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Pull the spark plugs, make sure the plug has a ground to the block, and check to see if you can see spark while the engine is cranking.

You probably won't see it though, and the coil pack might not necessarily be bad. With no RPM signal it has no idea when to spark.
Before the firmware update i was able to read rpms in tuner studio. I know i sound like a complete idiot but that would mean it was getting signal previously right?
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Old 05-31-2015, 07:35 PM   #14
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Quote:
Originally Posted by deezums View Post
Pull the spark plugs, make sure the plug has a ground to the block, and check to see if you can see spark while the engine is cranking.

You probably won't see it though, and the coil pack might not necessarily be bad. With no RPM signal it has no idea when to spark.
I actually have new spark plugs sitting on my work bench. would it be an issue if i just pulled 1 wire, attached it to a new spark plug, grounded it and checked?
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Old 05-31-2015, 07:40 PM   #15
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<p>
Quote:
Originally Posted by gr4v3r View Post
I actually have new spark plugs sitting on my work bench. would it be an issue if i just pulled 1 wire, attached it to a new spark plug, grounded it and checked?
</p><p>Would be fun.</p>
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Old 05-31-2015, 07:46 PM   #16
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<p></p><p>Would be fun.</p>
just did it while my wife held the plug to the valve cover, all garage lights off, no spark. But you think since there is no rpm signal it wouldnt spark even if the coils were fine?
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Old 05-31-2015, 07:47 PM   #17
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<p>Next time you should hold it and pretend to get shocked real bad, gets my gf every time.</p><p>Sounds like you have a different problem. post your tune.</p>
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Old 05-31-2015, 07:51 PM   #18
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Quote:
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<p>Next time you should hold it and pretend to get shocked real bad, gets my gf every time.</p><p>Sounds like you have a different problem. post your tune.</p>
that would have been fun! Heres the tune.
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Old 05-31-2015, 09:21 PM   #19
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would it be a bad idea to plug in my oem ecu and see if the car start?
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Old 05-31-2015, 09:31 PM   #20
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IT STARTED WITH THE STOCK ECU!!! ok now how do I find someone very knowledgeable to help me get it running on MS well?
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