Skylinekrille Posted April 24, 2016 Report Share Posted April 24, 2016 Running a V8 twin turbo using Thunder ECU along with a Ron francis blackbox.Using 1 relay for each coil pack bank, and 1 relay for the injectors. These relays are triggered by the ignition switch along with the G4 thunder Ecu, and also a Dash2pro.Whats happening is if i turn on the ignition switch everything fires up, if i then turn off the switch, there are some kind of +12v "back power" that keeps the ignition ON, and the injectors starts to click and i have to pull the main switch to kill everything, this is when the Ecu is plugged in, if i unplugg the Ecu its fine, and i get 12v att all injectors etc and i can turn the Ignition off. And i am not cranking at all also.in PC link everything looks fine from all sensors and all, ive runned several earth feeds both to the chassi and also the engine.Ive measured on the 12v ignition feed to the injectors and for some reason i get some kind of power from the injectors, not 12v, but around 8-9V and pulsing when the ignition switch is off. This small voltage tho holds the relay ON for some reason. I tried to unplugg everything and only connect 1 injector but same problem, of course only the injectors plugged in is clicking then.So im kind of out of ideas at the moment Quote Link to comment Share on other sites More sharing options...
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