stprasinz Posted March 4, 2009 Share Posted March 4, 2009 ok I have an 87 300zx non turbo converted to a 84 ecu etc turbo... it ran bfore with the old motor (84 300zx turbo) but i just put in a different motor, and it did run and now the fuel stopped working all together, no pumping, no injector pulse nothing.... this motor ran, any hints to which relays or plugs that might not be hooked up properly would be great help Ive tried searching and everyway I word it I get 280zx z31 ecu swaps... ugh.. any help would be appreciated Quote Link to comment Share on other sites More sharing options...
stprasinz Posted March 4, 2009 Author Share Posted March 4, 2009 ok here is what I know and what Ive done. removed the fuel line no fuel comes out, no fuel comes out with the engine turning over, or for the primeing the injectors do not inject, or activate,(noid light tested) i have a distributor to check stuff quickly under hood with out cranking. have checked distributor thats on th engine tried 2 other known good ecus, well they were good whats the chances of 3 ecus going bad when 2 where in my bed room closet...... so any help??? wanna have it running just to have it running to move it around, prior to megasquirt instal..... Quote Link to comment Share on other sites More sharing options...
FlatBlack Posted March 4, 2009 Share Posted March 4, 2009 Did the new motor run on the current harness and then stop running, or has it never fired up in this car? Quote Link to comment Share on other sites More sharing options...
stprasinz Posted March 4, 2009 Author Share Posted March 4, 2009 yes it was running fine this motor this harness this ecu... went back a few days later and now Im here..... ugh... Ive diconnected the entire harness and reconnected it a few times.. tested so many spots for power.... oh and I tried jumpering power to the fuel pump.. it doesn't help the injec. not firing..... Quote Link to comment Share on other sites More sharing options...
FlatBlack Posted March 4, 2009 Share Posted March 4, 2009 An FSM's wiring diagram would help out alot right now, you could narrow it down more quickly. Quote Link to comment Share on other sites More sharing options...
stprasinz Posted March 5, 2009 Author Share Posted March 5, 2009 sadly enough I got one i havent gone thuroughly through it but alot of it.. gotta get a pin read out to finish haven't had alot of time with the cold weather out, and it just happened 2 weekends ago, and I am trying to swap my sisters escort motor at the sme time, and not get too hung up since Im gonna convert to megasquirt.;.... Quote Link to comment Share on other sites More sharing options...
stprasinz Posted March 5, 2009 Author Share Posted March 5, 2009 ok here is what i found near the firewall on the engine side of the the engine harness there is a 6 pin connector with 2 of the pins covered so that can't connect to the only other 6 pin I see around it which is plugged into another and the colors match on both sides of the connector... now im forgetting shoulda wrote the stuff down... but i think it was the 6 pin connector one is black and are red with stripes green, yellow and black i believe(same collor as the injector wires ;( but i see no connectors around for it to plug into... last but def. not least there is a 2 wire red pretty heavy connector one side has like 4-6 volts and readily drops off to near 0????? maybe thats what it is any help would be greatly appreciated if i knew how to upload pics i'd take some and do it but i am computer retarded lol... Quote Link to comment Share on other sites More sharing options...
stprasinz Posted March 9, 2009 Author Share Posted March 9, 2009 ok its gotta be a relay or somthing, if i hook power to the hot side of injectors i get it running... back feeding the fuel pump couldn't be good.... anyone know which relay is bad ;( Quote Link to comment Share on other sites More sharing options...
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