slownrusty Posted February 21, 2008 Share Posted February 21, 2008 Mods - Sorry that I am posting on here, but I am desparate and my car is dead in the water without it. After 10-12hours of trouble shooting, I determined that my ECU was fine but the problem was with the EFI main relay or the Dropping Relay for the injectors. Does anyone have a working EFI main relay (located adjacted to the ECU) and the dropping resistor silver box for a 280Z (located right behind the clutch master cylinder)? I am happy to purchase these items from you. Here is a pic: Please let me know. MAny Thanks! Yasin (slownrusty@yahoo.com) Quote Link to comment Share on other sites More sharing options...
Administrators BRAAP Posted February 21, 2008 Administrators Share Posted February 21, 2008 Yasin, The part in the engine side of the engine bay is the dropping resistors, not a relay. I've never seen those go bad, though I guess it could happen. Easy to test. Verify power TO the dropping resistors. If that is good, then verify power out of the dropping resistors. Quote Link to comment Share on other sites More sharing options...
slownrusty Posted February 21, 2008 Author Share Posted February 21, 2008 Yasin,The part in the engine side of the engine bay is the dropping resistors, not a relay. I've never seen those go bad, though I guess it could happen. Easy to test. Verify power TO the dropping resistors. If that is good, then verify power out of the dropping resistors. Hi Paul - Thanks for the reply. If you have never seen those go bad, then that makes me feel better it might be my EFI relay, good point on testing into and out of the resistors. When I sit there cranking, the tach is jumping, but absolutely no action at the injectors, I triple checked that with a Noid light, lots of hot spark and lots of gas at the injectors too. To you, does that sound like an EFI relay acting up? Many thanks- Yasin Quote Link to comment Share on other sites More sharing options...
bschiltz Posted February 21, 2008 Share Posted February 21, 2008 Are they the same on the ZX? If so I might still have them on my car. Quote Link to comment Share on other sites More sharing options...
mario_82_ZXT Posted February 21, 2008 Share Posted February 21, 2008 The EFI relay is basically 2 relays in one. Well, maybe three. It provides power to the ECU, the injectors, and I believe, the Fuel Pump. You should be able to probe the connector on the relay to see if it has 12v with the car in the "ON" position. The pin/connector to check should be on the wiring diagram I posted in your other post. If it is bad, and you can't find an EFI relay, you can cut off the connector and get 2 relays at a parts store, and their connectors (I think Autozone sells nice relay connectors) and swap it out for 2 common ones. I think it's probably bad as the power source wire for the injectors is kind of big and out of the way, so I think it'd be a little difficult to damage enough for it to stop the injectors from firing. Mario Quote Link to comment Share on other sites More sharing options...
jt1 Posted February 21, 2008 Share Posted February 21, 2008 Yasin, what model is your car? I have a 76 280 parts car. John Quote Link to comment Share on other sites More sharing options...
slownrusty Posted February 22, 2008 Author Share Posted February 22, 2008 Hi Guys - I have s apre EFI relay and dropping resistors coming from Kenny (thanks Kenny). I should have them by Saturday - wish me luck! The patient is a '78 280Z Thanks guys and I will report back in. Stay tuned. My best - Yasin Quote Link to comment Share on other sites More sharing options...
Darrel Posted February 22, 2008 Share Posted February 22, 2008 you can also try jason and gretchen, Jason lives in the springs. I'm not sure what he did with the parts after swapping in his sbc. Quote Link to comment Share on other sites More sharing options...
Recommended Posts
Join the conversation
You can post now and register later. If you have an account, sign in now to post with your account.