HB280ZT Posted August 21, 2005 Share Posted August 21, 2005 Hi All, Well i need help. I have the complete 82 turbo harness and all other parts installed in my 77 280Z. I am not getting any spark so I think my ignitor is shot!! I have a new one on order and the correct one ( long story) should be here tomorrow morning. I have good fuel pressure and the pump is running like it should on start up. I also have a good ECU green light in the on position but it goes out when I crank the motor, is this good or bad??? Please let me know if this is correct and what else I should check. Thanks HB280ZT Quote Link to comment Share on other sites More sharing options...
HB280ZT Posted August 22, 2005 Author Share Posted August 22, 2005 Well no takers!! I put on the new ignitor but still no spark!! I changed out the ECU and that did not change anything. So what next?? I am not sure where to check now. I may try and swap the distributor as a last resort but other then that I am out of luck and time on this swap. I will just have to put in the old setup and get it running for my road trip the end of this week. HB280ZT Quote Link to comment Share on other sites More sharing options...
MaTTSuN Posted August 23, 2005 Share Posted August 23, 2005 did you follow the wiring from GrayZ? my swap started right up when i hooked it up like he did. was the engine running befor u put it in?did you clean all your grounds? Quote Link to comment Share on other sites More sharing options...
HB280ZT Posted August 29, 2005 Author Share Posted August 29, 2005 Well I am back and can finally post a reply to MattSun's post. To start with the engine did run because it has been in my car for about 6 years and has been running, sorta!! As for the connectors yes I did clean them with contact cleaner and I tried to scrap them if possible. As for how I did the wiring here is what I did, it is long!! I am using parts from an 82 turbo 280ZX. Computer AFM Distributor and shaft Wiring harness Wiring harness configuration: Plug #1 Br – Brown to battery G – Green to battery Plug #2 near ECU YW - Yellow/White: goes to the ignitor (I used the LW Blue/White wire that was in the harness to run the signal out to the coil; I used the YW wire between the empty terminal and the y wire) Y – Yellow: is the start signal (I ran a wire to the BY Black/Yellow wire on the 77 harness under the dash) Plug #3 at battery G – Green: 12v constant taken from the battery BW – Black/White: 12v switched LR – Blue/Red: fuel pump signal to fuel pump relay pin 86 Ignitor BW – Black/White: used BW wire from the harness 12v Switched YW – Yellow/White: from plug #2 via LW wire Fuel pump relay 85 – Ground to chassis and B on EFI relay 86 – Signal from ECU via LR wire from plug #3 87 – 12 volts to pump 30 – Constant power from battery I hope someone can find a problem because at the race track the other day the car was running very rich and it smoked up the track pretty good!! Also with it running that rich I had problems with the car running over 4500 rpm's, you see it would lean out over 4500 rpms and ping like crazy. HB280ZT Quote Link to comment Share on other sites More sharing options...
bumble zee Posted September 13, 2005 Share Posted September 13, 2005 Check your crank sensor. Is yours in the distributor? or down by the crank? On the 81 they are down on the crank. My sensors were really dirty when i fist put my car together. Cleaned the terminals that read the magnets on the crank, and it fired right up, and make sure it is aligned right. Also make sure that you are getting power to your ECU and ignitor during cranking... I have made that mistake also. Quote Link to comment Share on other sites More sharing options...
HB280ZT Posted September 13, 2005 Author Share Posted September 13, 2005 Bumble Zee, Thanks for the information. As for my setup my crank sensor is in the distributor, 82 setup. Not really sure how to clean it other then spraying it with contact cleaner. As for timing I believe I had that setup correctly. Now about getting power to the ECU during cranking, mine had a green light before and during cranking. I also got the fuel pump to prime the system then shut off . The only item I did not check is if I was getting power to the ignitor during cranking. But I was using the same source BW that is supplied to the ECU. HB280ZT Quote Link to comment Share on other sites More sharing options...
bumble zee Posted September 14, 2005 Share Posted September 14, 2005 Where are you getting your switched power from? have you tried to just wire the switched power to the battery just to see if maybe you need to find another switched power? I am using my ignition as my cranking and switched power. Quote Link to comment Share on other sites More sharing options...
HB280ZT Posted September 14, 2005 Author Share Posted September 14, 2005 Bumble Zee I got my switched voltage from the Z ignition harness under the dash, wire BY. This went to the Y wire of plug #2. As for the B/W it came from the ECU. To show that my B/W wire was getting the correct signal it powered the fuel pump as it should. However I still did not get a spark. So should I use the B/W wire that is part of the Z harness that was used to power the original coil?? I will have to look into this one. Where did you get your switched power from in your setup?? Thanks for the help!! HB280ZT Quote Link to comment Share on other sites More sharing options...
bumble zee Posted September 16, 2005 Share Posted September 16, 2005 What voltage have you checked? Have you checked the voltage at the coil when the key is on, and when cranking? I'll look today to see what wire I hooked it up to. Quote Link to comment Share on other sites More sharing options...
getZ Posted September 16, 2005 Share Posted September 16, 2005 Watch your 12v computer supply voltage during cranking. It shouldn't drop below something like 10v. I forgot where it was but I had to leave the original resistor the car came with to prevent the supply voltage from getting to low during cranking. Quote Link to comment Share on other sites More sharing options...
Ben's Z Posted April 10, 2013 Share Posted April 10, 2013 I just realized I must have junked my ignition harness from the 83 donor 280zxt. How f'ed am I? Quote Link to comment Share on other sites More sharing options...
billseph Posted April 10, 2013 Share Posted April 10, 2013 I just realized I must have junked my ignition harness from the 83 donor 280zxt. How f'ed am I? Not very f'ed. You only need a couple, maybe a few of the wires from it. I made mine. If you have a grasp of the infamous "turbo swap sticky" then it's a piece of cake. I have a spare, but it's from an '81, so it wouldn't be plug and play for you. Quote Link to comment Share on other sites More sharing options...
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