JSM Posted December 8, 2009 Share Posted December 8, 2009 Sorry, Paul I read your prior post wrong the first time. I got it know. Sammy, is purchasing another known good harness, ECU and FI relay tonight. Quote Link to comment Share on other sites More sharing options...
s!lvias30 Posted December 8, 2009 Author Share Posted December 8, 2009 Yup ! I can't wait hopefully that will fix my problem . Wish me luck Quote Link to comment Share on other sites More sharing options...
Administrators BRAAP Posted December 8, 2009 Administrators Share Posted December 8, 2009 Yup ! I can't wait hopefully that will fix my problem . Wish me luck It better work! I've got... uh... you don't want to know how much time I've invested in this one.. Good luck and keep us posted. Quote Link to comment Share on other sites More sharing options...
JSM Posted December 11, 2009 Share Posted December 11, 2009 Paul, thanks for all your time and help. Sammy, got it running. Swapped the harness, ECU and no go. Swapped the New EFI relay and she started right up. He didn't try the old set up with the new ECU or swap back in the old ECU, but I have a feeling this was the last issue to resolve as we bypassed it originally as our last step. Quote Link to comment Share on other sites More sharing options...
Administrators BRAAP Posted December 11, 2009 Administrators Share Posted December 11, 2009 Paul, thanks for all your time and help. Sammy, got it running. Swapped the harness, ECU and no go. Swapped the New EFI relay and she started right up. He didn't try the old set up with the new ECU or swap back in the old ECU, but I have a feeling this was the last issue to resolve as we bypassed it originally as our last step. Great news! Thank you for the update. Quote Link to comment Share on other sites More sharing options...
Matt 78Z Posted March 23, 2010 Share Posted March 23, 2010 Jeff, Is that what you are after? Got the exact numbers from another more legible '78 service manual. Hello, I've been reading pages of info on this topic but have yet to find the exact answer. From you post it sounds like you would be the person to ask. I have a 78 with a carb setup. What I want to do is run the factory pump and wiring. I know of the 4 wire connector for the ECU and have heard of jumping a couple wires so the pump circuit is complete. I can't find which wires or if I'm even reading this right. Someone else also mentions the oil pressure sending unit completing the signal and that they had to do nothing under the dash. Do I actually have to jump anything or add relays? It seemed at one time I was using the stock wiring after removing the EFI and the pump was running. Actually, it's been 10 years, I think it ran good for a while, then it just quit and I was not getting power to the pump. So now it's ran of a switched hot wire which I would like to do away with for safety reasons. Any help is greatly appriciated. Thanks Matt Quote Link to comment Share on other sites More sharing options...
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