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Old 03-01-2010, 11:41 AM   #1
Baz
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Default Megasquirt keeps failing

Hi Guys, wonder if you could help as I am having a nightmare! For the last 2 weeks my squirt has been failing on a regular basis, symptoms are:

Engine running fine then it just cuts and feels like I am only running on 2 cylinders (like a tractor!) sometimes it clears and sometimes it doesent (had to be recovered the other day. My car is a 93 1.6 with m45 SC, MS v1, LC-1 WB o2.

last weekend I re-soldered all terminals on the harness, stripped the squirt down and resoldered most connections, and its still doing it. Initially, I thought it may be something other that the squirt but I have changed the following:
Ignitor
spark pack
CAS
Leads
Plugs

I have also put my squirt on someone elses car with his and my harness and it still happens. I think it may be a fuel based problem as I am getting a spark when this happens. I have been at this now for 2 weeks and I am loosing the will to live!! Can anyone help please...
Barry
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Old 03-01-2010, 11:43 AM   #2
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MegaSquirt never fails, this is your fault.

Sounds like the only thing you've never changed is the coils. Also sounds like one is going bad.

EDIT: Re-read last line. Are you saying you put your controller on his car and he has the same problem?
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Old 03-01-2010, 11:47 AM   #3
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I blame your soldering.
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Old 03-01-2010, 11:56 AM   #4
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Quote:
Originally Posted by Braineack View Post
I blame your soldering.
+1. Double check your harness. I know you checked it once, but take another quick look. Also, did you clean the board with alcohol after you built it? I've heard of people having issues with the solder flux absorbing moisture and shorting out.
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Old 03-01-2010, 12:07 PM   #5
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Quote:
Originally Posted by gospeed81 View Post
MegaSquirt never fails, this is your fault.

Sounds like the only thing you've never changed is the coils. Also sounds like one is going bad.

EDIT: Re-read last line. Are you saying you put your controller on his car and he has the same problem?
Yes, I put my squirt on a friends car using his harness then mine and it still does it.
Barry
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Old 03-01-2010, 12:09 PM   #6
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Quote:
Originally Posted by Jeff_Ciesielski View Post
+1. Double check your harness. I know you checked it once, but take another quick look. Also, did you clean the board with alcohol after you built it? I've heard of people having issues with the solder flux absorbing moisture and shorting out.
I've checked it twice Jeff and yes I did clean the board, if it isent the harness any idea which area of the board I should be checking?
Cheers
Barry
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Old 03-01-2010, 12:11 PM   #7
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Quote:
Originally Posted by Braineack View Post
I blame your soldering.

You may be right but I am pretty good at soldering and I have checked it thoroughly, any idea which area of the board could be causing this?
Barry
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Old 03-01-2010, 12:13 PM   #8
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log that ****! then we can know for sure if it's hardware or software.
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Old 03-01-2010, 12:19 PM   #9
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Check the ground below your TB, that was causing problems for me.
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Old 03-01-2010, 01:00 PM   #10
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Heres a log of it happening:

[IMG][/IMG]
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Old 03-01-2010, 03:39 PM   #11
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This may just be a coincidence but this problem has only started since I stated to use the auto tune feature on tunerstudio, also, when I get a difference report nearly all the info is missing (rpm, map kpa, choose ts settings etc, all the buttons are missing) this also happens when I try to save the tune, I tried it on a friends laptop - same thing, does anyone else get this?

Could it be that my MS processor is corrupted/knackard? I have reflashed the firmware and downloaded a fresh copy of TS - still got the problem.....
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Old 03-01-2010, 04:10 PM   #12
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looks like your spark angle goes crazy high, hard to see...upload your MSQ and the log file please.
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Old 03-01-2010, 04:23 PM   #13
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Sorry but do you mean this?
[IMG][/IMG]
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Old 03-01-2010, 04:24 PM   #14
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attach the actual log file and your MSQ to your next post. go to advanced and then attachments and upload them so i can look at it locally.
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Old 03-01-2010, 04:34 PM   #15
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Just trying to do this
Attached Files
File Type: msq 2010-03-01_09.41.44.msq (32.3 KB, 74 views)
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Old 03-01-2010, 04:37 PM   #16
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its saying the msl is an invalid file??

Barry
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Old 03-01-2010, 04:39 PM   #17
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oh yeah they changed the damn file extension from xls...let me fix that.
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Old 03-01-2010, 04:42 PM   #18
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I see weird values in your wheel decoder settings, and you should turn baro corrections.
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Old 03-01-2010, 04:47 PM   #19
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I can upload the msl now but how do I get it into the message?
Barry
Attached Files
File Type: msl 2010-03-01_16.38.58 cutting out.msl (51.5 KB, 60 views)
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Old 03-01-2010, 04:50 PM   #20
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its attached. i can get it.
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