Megatune disconnecting randomly - 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 03-16-2009, 11:11 AM   #1
Hittin' Boost & Cones
Thread Starter
iTrader: (2)
 
240_to_miata's Avatar
 
Join Date: May 2007
Location: Cromwell, Connecticut
Posts: 2,572
Total Cats: 11
Default Megatune disconnecting randomly

I just re-installed my megasquirt to prep for my turbo going in next week. I started tuning some off boost cells, but megatune keeps randomly disconnecting from the controller. All i have to do to get it to reconnect is pull out the USB and put it back in to the laptop, but it is still really annoying and hinders my data logging capabilities. Any help would be appreciated!

Info:
Dell Inspiron E1505
Windows XP Media Edition
Com port 1
USB to Serial adapter
MS1 V3.0 in parallel on a 1996 1.8
Hi-Res code

Let me know if you need any other info.
240_to_miata is offline   Reply With Quote
Old 03-16-2009, 11:15 AM   #2
meatbag
iTrader: (50)
 
gospeed81's Avatar
 
Join Date: Nov 2008
Location: Houston, TX
Posts: 7,357
Total Cats: 26
Default

I imagine your adapter is good since it came from DIY, but worth a mention since I went through three (yes 3) adapter setups before getting mine to communicate right last week.

I got this based on Brain's recommendation, not a quibble since:

GigawareŽ 6-ft. USB-A to Serial Cable - RadioShack.com
gospeed81 is offline   Reply With Quote
Old 03-16-2009, 02:10 PM   #3
Hittin' Boost & Cones
Thread Starter
iTrader: (2)
 
240_to_miata's Avatar
 
Join Date: May 2007
Location: Cromwell, Connecticut
Posts: 2,572
Total Cats: 11
Default

i really dont want to blow $40 if i dont have to (thats $$ for a EBC right there!)

I think it might be a setting within my computer that is causing it to ignore the usb or something. I am going to try re-installing the driver.

EDIT:

when i clicked the driver install this popped up real quick.

Name:  driverinstall.jpg
Views: 8
Size:  41.5 KB

Is this normal? I am software illiterate

And no, that isnt my car... thats revlimeter's old "Sharka" from clubroadster.
240_to_miata is offline   Reply With Quote
Old 03-16-2009, 02:26 PM   #4
Boost Czar
iTrader: (61)
 
Braineack's Avatar
 
Join Date: May 2005
Location: Chantilly, VA
Posts: 72,838
Total Cats: 1,787
Default

what does the log file look like?
Braineack is offline   Reply With Quote
Old 03-16-2009, 02:37 PM   #5
Hittin' Boost & Cones
Thread Starter
iTrader: (2)
 
240_to_miata's Avatar
 
Join Date: May 2007
Location: Cromwell, Connecticut
Posts: 2,572
Total Cats: 11
Default

i havent logged anything yet. I only drove back to college and i just had autotune running the whole time. Ill try to go for a ride on wednesday and catch one of these disconnects in a log.
240_to_miata is offline   Reply With Quote
Old 03-20-2009, 08:27 PM   #6
Hittin' Boost & Cones
Thread Starter
iTrader: (2)
 
240_to_miata's Avatar
 
Join Date: May 2007
Location: Cromwell, Connecticut
Posts: 2,572
Total Cats: 11
Default

Here are 2 logs i did on the way home. Should be about 20 minutes and 40 minutes respectivly.

I dont see anything weird other than the fact that my car IS NOT TUNED AT ALL RIGHT NOW. i just got it drivable, so ignore the fact that it isnt tuned.

Every time it disconnected and the screen went pink i unplugged the USB and plugged it back in... megatune came right back and it still said logging.


These were on a stock 1.8 with the 550cc injectors installed on DIY's map BARELY touched (not tuned)


P.S. ignore my IAT, i was getting heat soak like crazy with the stock intake (it was 45*F ambient)

EDIT: it refuses to attatch the files. ill try to post them elsewhere
240_to_miata is offline   Reply With Quote
Old 03-21-2009, 08:40 AM   #7
meatbag
iTrader: (50)
 
gospeed81's Avatar
 
Join Date: Nov 2008
Location: Houston, TX
Posts: 7,357
Total Cats: 26
Default

Quote:
Originally Posted by 240_to_miata View Post
i really dont want to blow $40 if i dont have to (thats $$ for a EBC right there!)


Trust me, I know, I didn't want to blow $40 either, but after dealing with that crap for three days I wanted to kick myself when I finally got it and went to town tuning problem free.

I hope it works out for you though. It does sound like an adapter/driver/COM port problem.
gospeed81 is offline   Reply With Quote
Old 03-22-2009, 02:57 AM   #8
DXO
Junior Member
iTrader: (2)
 
Join Date: Jul 2008
Location: Kannapolis, NC
Posts: 229
Total Cats: 1
Default

Don't get why DIY's cable is so expensive. I've always bought them for about $10 elsewhere. Been using the one of these for about 3 years for router configuration. And have 3 more for MS (Bench, Miata, 240sx).

Long Cord:
Newegg.com - SABRENT SBT-USC6M USB to Serial (9-pin) DB-9 RS-232 Adapter Cable - Adapters & Gender Changers

Short cord:
Newegg.com - SABRENT SBT-USC1K USB to Serial (9-pin) DB-9 RS-232 Adapter Cable - Adapters & Gender Changers
DXO is offline   Reply With Quote
Old 03-22-2009, 09:45 AM   #9
Hittin' Boost & Cones
Thread Starter
iTrader: (2)
 
240_to_miata's Avatar
 
Join Date: May 2007
Location: Cromwell, Connecticut
Posts: 2,572
Total Cats: 11
Default

^^^^^^^^^^ ordered
240_to_miata is offline   Reply With Quote
Old 03-22-2009, 11:26 AM   #10
Junior Member
iTrader: (4)
 
Join Date: Jan 2008
Location: Chicago
Posts: 88
Total Cats: 0
Default

DXO thanks for the info on the cable. Braineack is building my MS, I order a cable and it should arrive just before the MS. I love not having problems

Graham
FastG is offline   Reply With Quote
Old 03-22-2009, 12:52 PM   #11
Senior Member
iTrader: (6)
 
Join Date: Jul 2007
Location: Cocoa Beach, FL
Posts: 808
Total Cats: 3
Default

check power management for the device in device manager. Uncheck "Allow the computer to turn off this device to save power" if it's checked and see if that helps.
TrickerZ is offline   Reply With Quote
 
 
Reply

Related Topics
Thread Thread Starter Forum Replies Last Post
FS/FT: 03.5 Mazdaspeed Protege leatherface24 Cars for sale/trade 15 10-16-2015 12:35 PM
Are my coils failing? viriiguy General Miata Chat 5 09-28-2015 08:39 PM
Disconnect Coils when Updating FW DNMakinson MEGAsquirt 8 09-12-2015 09:26 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 12:25 PM.