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EFILive Scan looses connection..

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Old 03-12-2009, 03:00 PM
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Default EFILive Scan looses connection..

I have been having an issue lately when data logging. When I get over about 4000 rpm, the scan looses connection and needs to re-establish. I am yet to get a good data log. any thoughts?
Old 03-12-2009, 11:23 PM
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V1 / V2 ? The V2 cable that goes from the interface to the data port on the vehicle can get worn out on the CAT 5 looking side that plugs into the V2 it'self from tuggin'.

Other than that, have you been using the same USB port on your laptop? Is that port getting worn out?

Been there done that on all of the above after tuning 100's of vehicles.

The V1 mini USB port side can get touchy as well.

Take care of your equipment and it will take care of you long time!
Old 03-13-2009, 08:17 AM
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V1...

New computer, so I will try changing cables.

How about grounding issues?
Old 03-13-2009, 09:03 AM
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a ground issue could cause that too. What is the voltage on your scan log right before it quits? Maybe the voltage on your vehicle is dropping very bad.
Old 03-13-2009, 09:17 AM
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Originally Posted by wait4me
a ground issue could cause that too. What is the voltage on your scan log right before it quits? Maybe the voltage on your vehicle is dropping very bad.
I will check that... Could a spike do it too?
Old 03-13-2009, 09:18 AM
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Yes, there are protections in the cable itself to make it not fry.

Are you using a charger for your laptop at the same time? An inverter would cause that also as it is trying to fry the cable.
Old 03-13-2009, 09:39 AM
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no charger... I will check the voltage. thanks
Old 03-13-2009, 09:40 AM
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That motor in your sig looks pretty damn sexy....
Old 03-13-2009, 09:54 AM
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thanks.. thats my beast...
Old 03-13-2009, 04:41 PM
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What PCM are you using (where did it come from)...?
Old 03-15-2009, 12:19 PM
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Originally Posted by joecar
What PCM are you using (where did it come from)...?
2002 camaro PCM.. Been using it for a while.... just started doing this last season. No other issues.
Old 03-18-2009, 04:31 AM
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Originally Posted by Tzion_ben_Arthur
I have been having an issue lately when data logging. When I get over about 4000 rpm, the scan looses connection and needs to re-establish. I am yet to get a good data log. any thoughts?
I know it's a simple query,

But have you opened up "properties" under the edit tab in the scan-tool and checked logging details to ensure everything's okay, and that you are able to scan logs for xxxxxx number of frames (in the frame limit window).
Old 04-11-2009, 05:23 PM
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Thanks...


I found the problem. My ground for the LM-1 and the data port had a 53ohm difference between it and the bat ground. I adjusted this and "bingo", we are all cool now. Thanks everyone.


Originally Posted by Sid447
I know it's a simple query,

But have you opened up "properties" under the edit tab in the scan-tool and checked logging details to ensure everything's okay, and that you are able to scan logs for xxxxxx number of frames (in the frame limit window).
Old 04-12-2009, 12:20 AM
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well fudge... it did it again!!!


afr works and the volts are good at cut off... always around 3000 rpm.
Old 04-12-2009, 11:18 AM
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Originally Posted by Sid447
I know it's a simple query,

But have you opened up "properties" under the edit tab in the scan-tool and checked logging details to ensure everything's okay, and that you are able to scan logs for xxxxxx number of frames (in the frame limit window).
scan mode Streem fast

1 pk every 10 pri 1
1 pk every 5 pir 2

all pids pri 1
21 pids selected

Old 04-12-2009, 05:17 PM
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OK... got rid of the DMA PIDs and used just the basic VE PIDs and the issue seems to be gone now. I will put it thru the ringer when it quites raining and dries up.
Old 04-13-2009, 09:16 AM
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Hmmm... at 3K rpm...
Old 04-13-2009, 05:02 PM
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Originally Posted by joecar
Hmmm... at 3K rpm...
It has not did it again since I am using just the "Auto VE PIDs" only. I will try it again to make sure. The screen still locks a little, but loging does not stop like it did before and no green error bar. The computer is fairly new and does not have anyy issues, so I would not think it is a processing issue. If it was a processing issue, then why would opperation of the engine have an effect on such a linear process.
Old 04-13-2009, 08:24 PM
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IMO if the issue started with the new laptop, then IMO the issue is with the USB ports/hardware etc.

You car is vibrating more at 3 - 4 grand that at idle.

As a test, get a rider to hold the laptop in their lap while scanning and see if it continues to occur. Test east port.

With my Toshiba - same issue as yours- dropping connections on all USB ports. The Net framework was corrupted. After repairing and reinstalling net framework the issue went away.
Old 04-13-2009, 09:13 PM
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Originally Posted by dlandsvZ28
IMO if the issue started with the new laptop, then IMO the issue is with the USB ports/hardware etc.

You car is vibrating more at 3 - 4 grand that at idle.

As a test, get a rider to hold the laptop in their lap while scanning and see if it continues to occur. Test east port.

With my Toshiba - same issue as yours- dropping connections on all USB ports. The Net framework was corrupted. After repairing and reinstalling net framework the issue went away.
Thanks.. Sorry I was not clear. The computer I am using did work with this system at one time. Last weekend before the changes, I had a friend ride with me to save the log files and restart the process each time it would error out. However, I am interested in hearing more about the corrupted network.

Tomorrow when it is nice I am going to try some WOT logs again.



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