IvyMike Posted January 4, 2011 Share Posted January 4, 2011 A friend of mine has wired up his rb30e using a rb20e loom/computer. Everything goes aside from the injectors. We can't get them to trigger as something has crossed somewhere. For some reason each disconnected injector plug is reading 12v on either pin when the ecu is connected. With the injector loom disconnected from the ecu it still reads 12v on the left hand pins (the ones closest to the firewall). As far as I know these setups run a 12v common and a negative trigger. The injector ground is reading 0 ohms as well. Does anyone know why it could be doing this? How could all 6 negative triggers have 12v across them? Cheers Quote Link to comment Share on other sites More sharing options...
QCADTA Posted January 4, 2011 Share Posted January 4, 2011 possibly a difference between rb30e low impedence injectors and rb20e high impedence injectors. you will probably need a dropping resistor for them or you will most likely fry your ecu. or put the the rb20e injectors in and see if that works. Quote Link to comment Share on other sites More sharing options...
IvyMike Posted January 6, 2011 Author Share Posted January 6, 2011 The complete setup is rb20e running gear with with a rb30e block. We were working on it last night and found that the signal side of the injector loom would produce 12V intermittently (usually after the engine had been cranked) then drop off steadily after a given period of time, returning to 0v. Pretty bizarre considering these setups run a negative trigger. Even with the loom unplugged from the ecu, doing a continuity test across the 12V wire and the signal wire from the injector plug would show that they are connected somewhere. Running out of ideas here Quote Link to comment Share on other sites More sharing options...
eke_zetec_RWD Posted January 7, 2011 Share Posted January 7, 2011 un plug all the injectors then check it again. prob feeding through the others that are still connected to the one u are measuring Quote Link to comment Share on other sites More sharing options...
QCADTA Posted January 7, 2011 Share Posted January 7, 2011 have you grounded the new block? its not "alive" or something bizarre like that? all ya loom earths good? Quote Link to comment Share on other sites More sharing options...
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