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2G ECU Pin 12 constant Power

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mikejsmith1985

15+ Year Contributor
129
18
Dec 15, 2009
Bethel, Ohio
Hi,
I just recently got this build running. I have my wideband powered via pin 12 on the ECU. Initially it was working fine. I disconnected the battery and I had to weld in a new core support. In that process the only thing electrical I touched was the wiring for the cylinder just before the ac condenser, I confess I have no idea what that is... when I put everything back together I started it up let it idle while I checked out the trans fluid and cut the car off only the gauge for the wideband continued to stay lit. I have no explanation and didn’t touch that wiring.
Has anyone ever seen something like this?
 
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