MS2 won't start.
2 Attachment(s)
Running into a big issue with this MS2, and I have shop time scheduled in 6 days!!! Translation: I need to get this up and fast.
Here is what I know: It runs fine off of the stock ECU. No problems. Brain(tm)-built Harness Brain(tm)-checked over MS2 Brain said it worked fine from a stim when he had it last a week ago. Boots fine, burns fine, detects everything from sensors fine. Fuel pressure checks out, fuel pump is on. Trying to start from a map that worked a few weeks ago doesn't work. Trying to start from the Brain(tm) provided basemap doesn't work. If anyone has any ideas, it would be vastly appreciated. Attached are the current tune and log (I believe, at least) from startup. |
Swapped the stock ECU in, and confusingly, now it starts up on the first crank on the stock ECU. I've never had that happen before.
I'm at a loss now after banging my head out on this all day. Am I at a place where it's "Send it to someone else to diagnose", or what? |
(zack morris's phone)
Gotta figure out if not getting spark and/or fuel on ms first |
Originally Posted by Braineack
(Post 748391)
(zack morris's phone)
Gotta figure out if not getting spark and/or fuel on ms first |
(zack morris's phone)
Yeah or the spark and fuel test modes and listen for activity on each |
Originally Posted by Braineack
(Post 748396)
(zack morris's phone)
Yeah or the spark and fuel test modes and listen for activity on each Next step? |
Try increasing fuel in cranking and after start enrich. My fruend did that to the base map from diy and the car started. Are u running seq or batch inj? I made a mistake and had setings kn batch when itneded to be seq.
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Originally Posted by Clos561
(Post 748535)
Try increasing fuel in cranking and after start enrich. My fruend did that to the base map from diy and the car started. Are u running seq or batch inj? I made a mistake and had setings kn batch when itneded to be seq.
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Did you ruin the ignitor?
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Originally Posted by djp0623
(Post 748545)
Did you ruin the ignitor?
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no, I'm a tard for not reading more. Post up your ignition settings.
Correct .ini file if using tunerstudio. |
1 Attachment(s)
Originally Posted by djp0623
(Post 748548)
no, I'm a tard for not reading more. Post up your ignition settings
Correct .ini file if using tunerstudio. |
No, if it's working on the stock ecu, it's working on the MS. Unless you want to swap ECUs after every attempt to verify the ignitor is working, I'd move on to other things. It only blows while burning firmware, not while burning a .msq.
Has spark been verified with MS? Don't use one or two plugs, I want all four plugs sitting on the valve cover while cranking. Tell us which ones aren't firing. If they all are, it's most likely timing related. |
Originally Posted by curly
(Post 748554)
No, if it's working on the stock ecu, it's working on the MS. Unless you want to swap ECUs after every attempt to verify the ignitor is working, I'd move on to other things. It only blows while burning firmware, not while burning a .msq.
Has spark been verified with MS? Don't use one or two plugs, I want all four plugs sitting on the valve cover while cranking. Tell us which ones aren't firing. If they all are, it's most likely timing related. |
I think spark is supposed to be going high (inverted)
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Originally Posted by djp0623
(Post 748564)
I think spark is supposed to be going high (inverted)
Curly, I have a video being uploaded now of no spark on all 4 plugs on the valve cover. |
http://imageshack.us/clip/my-videos/20/f84.mp4/
Video of setting with going low (normal) on the MS2. I can swap to going high (inverted) however and provide a video with that if someone believes this will change the results |
Well I was going to verify you had them well grounded, but I can't see a damn thing. You should be able to see a spark with the light on, if that's what you're worried about.
edit: http://i228.photobucket.com/albums/e...h_216d51c4.jpg Miata's outside and I'm in my boxers, otherwise I wouldn't of used my bike. |
Originally Posted by curly
(Post 748573)
Well I was going to verify you had them well grounded, but I can't see a damn thing. You should be able to see a spark with the light on, if that's what you're worried about.
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Oh shit, you're actually on my coast, who knew.
Most likely CAS wiring related, if the stock ECU works, the MS is apparently not telling the coils to fire, either between the MS->CAS connection, or CAS->coils connection. Forget how to check, ask the wise(r) ones. |
Originally Posted by curly
(Post 748577)
Oh shit, you're actually on my coast, who knew.
Most likely CAS wiring related, if the stock ECU works, the MS is apparently not telling the coils to fire, either between the MS->CAS connection, or CAS->coils connection. Forget how to check, ask the wise(r) ones. http://img155.imageshack.us/img155/4330/dscn1150oq.jpg This is how I had the spark plugs btw. |
Do you know for sure that your trigger angle offset in is correct for the current CAS position?
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I know what his issue is, I sent him PM. It's hardware related.
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Originally Posted by Braineack
(Post 748659)
I know what his issue is, I sent him PM. It's hardware related.
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unpossible. I made a solution!
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We all make mistakes, the important thing is to minimize them as much as possible and to be there after the sale to make it right with least possible fuss. Out of curiosity, what was the actual problem?
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I replaced his spark output pullups from 1K to 270ohm while I had it handy. I put the "pull-up" on the wrong pins.
Been a while... |
Hey, Brain's been awesome to deal with the whole time. I got no complaints ;). I'm just amused that Brainy made a boo-boo that I was able to fix (I'm not the best at soldering when it comes to PCBs.)
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And for a true wtf moment....
Brain's basemap, except for at idle, is smoother than the stock ECU from what I was experiencing today. except for idle except for idle except for idle except for idle except for idle :facepalm: Any quick tips on closed loop PWM idle guys that I won't get from searching/googling? |
(zack morris's phone)
try min max duty off 25 62%. 700 2500 min max rpm. And maybe 40 20 10 for the pid There\'s a good ms2ms3 idle tuning thread that popped up like two days ago that I wrote a how to in |
:awesome: Thanks Brain!
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https://www.miataturbo.net/showthrea...highlight=idle
fwiw, the map you posted was using warm-up mode only, meaning that it was only controlling the idle to a specific duty cycle based on coolant temp. |
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