Megasquirt died mid operation - Miata Turbo Forum - Boost cars, acquire cats.

Welcome to Miataturbo.net   Members
 


MEGAsquirt A place to collectively sort out this megasquirt gizmo

Reply
 
 
 
LinkBack Thread Tools
Old 09-22-2015, 08:04 AM   #1  
Ich verstehe nur Bahnhof
Thread Starter
iTrader: (3)
 
psyber_0ptix's Avatar
 
Join Date: Mar 2012
Location: Northern VA
Posts: 4,007
Total Cats: 383
Default Megasquirt died mid operation

I was driving to work just moments ago when my the car just quite literally coasted mid load. Megasquirt and AFR gauge are unresponsive (power is bussed together). Is there a fuse for the ECU normally? I cannot find it in the panel in the engine bay. The one by driver side that says 'engine' is fine as well seemingly.

Last edited by psyber_0ptix; 09-22-2015 at 08:27 AM.
psyber_0ptix is offline   Reply With Quote
Old 09-22-2015, 08:24 AM   #2  
Ich verstehe nur Bahnhof
Thread Starter
iTrader: (3)
 
psyber_0ptix's Avatar
 
Join Date: Mar 2012
Location: Northern VA
Posts: 4,007
Total Cats: 383
Default

30A Injector fuse died. I replaced it and it popped immediately. Buh?

Is this related to power delivered to megasquirt?
psyber_0ptix is offline   Reply With Quote
Old 09-22-2015, 08:34 AM   #3  
Boost Czar
iTrader: (61)
 
Braineack's Avatar
 
Join Date: May 2005
Location: Chantilly, VA
Posts: 73,913
Total Cats: 1,988
Default

the Main Relay is powered off it and it supplies all red/white wire power. So that includes the ECU, yeah.

:(

http://www.miataforumz.com/1990-200-...ing/92diag.pdf
Braineack is online now   Reply With Quote
Old 09-22-2015, 09:09 AM   #4  
Ich verstehe nur Bahnhof
Thread Starter
iTrader: (3)
 
psyber_0ptix's Avatar
 
Join Date: Mar 2012
Location: Northern VA
Posts: 4,007
Total Cats: 383
Default

Quote:
Originally Posted by Braineack View Post
the Main Relay is powered off it and it supplies all red/white wire power. So that includes the ECU, yeah.

:(

http://www.miataforumz.com/1990-200-...ing/92diag.pdf

I replaced the fuse once more after disconnecting the fab9 cops and the ecu plugs, and this time no anomaly. Plugged everything back in and now it primes and starts. But I'm curious why it blew in the first place. I'll have to check some wiring to make sure it's not intermittently grounding out somewhere. Even though the car starts again, driving this thing makes me nervous.

Last edited by psyber_0ptix; 09-22-2015 at 09:21 AM.
psyber_0ptix is offline   Reply With Quote
Old 09-22-2015, 09:35 AM   #5  
Ich verstehe nur Bahnhof
Thread Starter
iTrader: (3)
 
psyber_0ptix's Avatar
 
Join Date: Mar 2012
Location: Northern VA
Posts: 4,007
Total Cats: 383
Default

I did have the laptop plugged into the USB port, waiting for the coolant to warm up before a data log to work. Could a bad connection from USB cause any shenanigans?
psyber_0ptix is offline   Reply With Quote
 
 
Reply

Related Topics
Thread Thread Starter Forum Replies Last Post
My solution for Oiltemp and Oilpressure input into Megasuirt (MS3) Zaphod MEGAsquirt 41 01-24-2016 12:25 PM
Any pnp megasquirt for 2001 Big_gumby WTB 0 09-30-2015 03:34 PM
1996 Turbo Build Goldwar DIY Turbo Discussion 2 09-29-2015 09:20 AM
Are my coils failing? viriiguy General Miata Chat 5 09-28-2015 07:39 PM
In what world... curly MEGAsquirt 11 09-22-2015 11:54 AM


Thread Tools

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are Off
Pingbacks are Off
Refbacks are Off



All times are GMT -4. The time now is 08:27 AM.




We are a participant in the Amazon Services LLC Associates Program, an affiliate advertising program designed to provide a means for us to earn fees by linking to Amazon.com and affiliated sites.