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1G wiring woes?

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onefast2gdsm

15+ Year Contributor
866
6
Aug 30, 2010
millersburg, Pennsylvania
I put a 2g ECU In my 1g and followed the attached diagram. Pins 17 and 24 on the 1g harness is wired to pin 92 on the 2g ECU. Well I started the car and it idled perfect. I shut it off and finished wiring my lc1 wideband, 3 wires were not hooked up, main ground to ecu the front and rear o2 wires. I am doing narrowband sim with logging on the 2g ECU. Well I wired the ground to pin 92 on the ecu and went to start it and it wouldnt start. Did some major changes to the ve table and got it to start, and slowly changed the ve table back to the way It was. Its idling at 2500 rpm and surging now. I also have codes now for the speed sensor, ignition circuit and ignition coil. My question is on a 1g what sensors are wired to pin 17 and 24 and would wiring the wideband cause this
 

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Thank you. So If that ground is compromised the tps would show wide open throttle. So that would explain the high idle after wiring the wideband. This is an h8 ECU, all the info I saw on a blown sensor ground on an ecu has been for 90-97 ecus. I can't find anything for the h8 ecu.
 
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