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Drac9

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Posts posted by Drac9

  1. We have a v88 ecu in an open wheel car running a crate LS7. We wired it up and had it starting and running pretty well on a base map. We are having an issue with the alternator getting hot to the touch after running for a few minutes. We removed it and had it tested to verify it was good. On reinstallation we discovered our kill switch did not actually kill the positive lead to the alternator by accidentally grounding the positive cable to the same ground lug we are using for the ecu. After doing that we checked all of our fuses and such and it seemed ok. We started it up and it was richer and seemed to be running a little "off" We checked the injector outputs with a noid light on that bank and found one injector was constantly commanded on with a VERY bright noid light. We disconnected the ecu and found that it was still being commanded on. after troubleshooting the harness for a while we didn't find any issues but eventually it just started working again on its own.

    This brings me to the issue at hand. Before we started the car we tested all of the injector and coil outputs and had good, bright lights on the noid lights. When I test the injectors now the light comes on but is probably half as bright as it was previously. We have verified we have 12 volts at the injector connectors. We have checked continuity on all of the grounds and have less than 1 ohm resistance. The sensors all seem to be reading correctly and there are no ecu errors. I'm guessing something is shorted internally in the ecu. I opened the case and didn't see any burned traces or anything like that. Any thoughts or ideas? We have a race Saturday. If this needs to be sent it does it have to go to NZ?

  2. I am wiring up a v88 to an 09 LS7 engine. I'm finding conflicting information on trigger voltages, some say 12v, some save 8 volts and some say 5 volts. I currently have the harness configured to provide 8 volts. Is this correct? Thanks in advance.

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