how did it lose the connection, anyway?
how did it lose the connection, anyway?
Well we this morning and swapped in my other ecm and had to Jump start it. I guess low battery voltage. Also realized that the pcm was likely messed up already because when I swapped them out my voltmeter started working correctly on ths dash. I was uploading a slightly modified tune and it was almost finished on one said then just said lost connection and kept trying to restart
Last edited by chevreligionz28; 03-19-2016 at 08:22 PM. Reason: typos
yeah a fully charged battery is important. it's actually not supposed to let you flash with a low battery, but if it starts flashing and your battery drains too far while flashing, you're done for.
i always make sure my climate control is off, headlights/foglights off, stereo, subwoofer, etc.
the ecm by itself doesn't draw much power at all, so it's all the other stuff that drains the battery.
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