Daphur280 Posted February 16, 2010 Share Posted February 16, 2010 I'm running an '83 turbo swap in my 73 240z, and i've followed the wiring diagrams provided here and every diagram in print as best as they convey. I've installed an MSD SS Blaster coil and I believe I have it setup correct, and I'm not getting any spark. So, from the IGN module I have the Blue wire attached to the NEG terminal on the coil and the Black w/ white stripe connected to the POS terminal on the coil. On the T connector from the harness on the module I have the White wire going to 12v IGN, and the Blue wire going to the ECU. I know I'm probably missing important info too so. . . lemme know Quote Link to comment Share on other sites More sharing options...
Daphur280 Posted February 16, 2010 Author Share Posted February 16, 2010 So I found out the green light on the ECU, isn't lighting up. So my guess is no power...? So I have some connectors on the harness (close to where the plugs are for the ecu) that I either saw little or no explanation of, and i have included them here... First: this "T" connector i didn't see anything in the swap thread, this is the first plug following the harness from the ecu to the firewall, Next: this connector I believe I was told goes to the fuel pump relay? anyway, I didn't have the harness that goes to the fuel pump relay, so I have set up the fuel pump relay and connected everything according to a diagram someone made me, and the pump works fine. but I'm not sure if there is something within this connector that is suppose to go to 12v source, Ground, etc. here is the connector, its the last connector (following the harness from the ecu to the engine bay) before the grommet: Quote Link to comment Share on other sites More sharing options...
Daphur280 Posted February 16, 2010 Author Share Posted February 16, 2010 any takers? Quote Link to comment Share on other sites More sharing options...
Daphur280 Posted February 17, 2010 Author Share Posted February 17, 2010 no? hmmph Quote Link to comment Share on other sites More sharing options...
Daphur280 Posted February 17, 2010 Author Share Posted February 17, 2010 I dont mean to whine, but I need to get this car done, I'm renting a garage by the month, and I'm 4 months over than I intended, so I'd like to get this car done asap... Quote Link to comment Share on other sites More sharing options...
Zeerari Posted February 18, 2010 Share Posted February 18, 2010 Lol, I certainly can't leave a crying baby on the internet. I'll take a look at my diagrams when I get home. I'm fairly certain I have that T connector just dangling. If you haven't already done it I would turn the key on and back probe the ECU connectors to make sure you're getting power to the pins that are supposed to have power... use a ground on the connector instead of a body ground just in case you have a bad ground to the harness. You might first want to do a quick probe of the EFI relay connector to make sure it's giving the harness power when the key is turned on. Quote Link to comment Share on other sites More sharing options...
Zeerari Posted February 19, 2010 Share Posted February 19, 2010 Looks like that's the connector to the fuel pump control modulator so I don't think it would cause the problems you're seeing... I don't have one either. Saw some good diagnostic procedures in the manual you might want to try since we all know it's something simple Quote Link to comment Share on other sites More sharing options...
Dtsnlvrs Posted February 19, 2010 Share Posted February 19, 2010 AAAAWwww ♥♥♥♥, I cannot remember.....do you have the FSM for the year of harness that you are using....there was one particular wire that had to be spliced off to a switched hot to get the ECU to come on, and another that went to the fuel pump relay...best bet is to check the wiring schematics and make sure all of the hot wire paths are replicated Quote Link to comment Share on other sites More sharing options...
Daphur280 Posted February 19, 2010 Author Share Posted February 19, 2010 i dont have an fsm for the 83 turbo. so far every wiring diagram I have is not entirely accurate, or differs from what I have. I took some more pics of my efi harness in case something looks out of place or whatnot... here is the (efi relay?) and some 5 pin connector (which i'm not entirely sure where it goes): I have it mounted up here: Coolant sensor on the head: O2 sensor: MAF and ground connector near it on the harness (grounded to MAF bracket that I fab'ed): another ground : The other 2 ground: Cold inj? (not pluged in; dont have the sensor) : I ended up having to use a CA18det throttle body, and it has a different TPS connector than the one on the L28et so I disassembled the connector and connected directly: here is the ignition harness connector (8 pin) on the EFI harness that i didn't have the rest of so I followed the diagram on the "L28et into S30" Sticky on the forum and connected them as instructed: Here's the ECU#: MAF #: Quote Link to comment Share on other sites More sharing options...
Daphur280 Posted February 19, 2010 Author Share Posted February 19, 2010 AAAAWwww ♥♥♥♥, I cannot remember.....do you have the FSM for the year of harness that you are using....there was one particular wire that had to be spliced off to a switched hot to get the ECU to come on, and another that went to the fuel pump relay...best bet is to check the wiring schematics and make sure all of the hot wire paths are replicated I did test the wire and it was the Black w/ White stripe wire from this connector that got the ecu light (green) on (i wired it to 12v switched): But I'm still getting no spark. Quote Link to comment Share on other sites More sharing options...
Zeerari Posted February 19, 2010 Share Posted February 19, 2010 Progress! Did you ground that green/blue wire that was going to the 8 pin connector? In case you don't have these already, they helped me a lot during my 82 swap: http://www.xenons130.com/reference.html Quote Link to comment Share on other sites More sharing options...
Daphur280 Posted February 21, 2010 Author Share Posted February 21, 2010 yup i grounded that wire, so i did more probing today and still nothing, checked out the FSM for the 83 turbo harness, and still stumped, everything as far as I'm concerned is connected as it should, and I'm getting nowhere. I'm coming to the end of attempts here, and probably gonna offer $50-100 to the person who can get it started and runnning... Quote Link to comment Share on other sites More sharing options...
Daphur280 Posted February 22, 2010 Author Share Posted February 22, 2010 Anyone? Quote Link to comment Share on other sites More sharing options...
Daphur280 Posted February 23, 2010 Author Share Posted February 23, 2010 $100 to the man, woman, or child who can get this car started and running, I'm sure its a simple wiring issue, that I can't solve. Quote Link to comment Share on other sites More sharing options...
Dtsnlvrs Posted February 24, 2010 Share Posted February 24, 2010 (edited) $100 to the man, woman, or child who can get this car started and running, I'm sure its a simple wiring issue, that I can't solve. Damn, if I still lived in Vancouver, I would take you up on that offer. Try hitting up Mortensen or Braap, they both live up near you. Edited February 24, 2010 by Dtsnlvrs Quote Link to comment Share on other sites More sharing options...
Daphur280 Posted February 24, 2010 Author Share Posted February 24, 2010 Damn, if I still lived in Vancouver, I would take you up on that offer. Try hitting up Mortensen or Braap, they both live up near you. Already tried Braap, he referred me to try Skib, and he has been helping me via PM, but I'm still getting nowhere and am just at the point where I need this car done and soon. So I'm resorting to this. Quote Link to comment Share on other sites More sharing options...
JMortensen Posted February 24, 2010 Share Posted February 24, 2010 Just for future reference, I know virtually nothing about electrical and much less about the stock FI setup, what is it K-jet or L-jet? There is a reason why my LSx will run a carburetor; because I am inept with electricity. Lots of good wiring/FI guys here, I am not one of them. Sorry. Good luck with your project. Quote Link to comment Share on other sites More sharing options...
rags Posted February 24, 2010 Share Posted February 24, 2010 Quick question. Are you sure your switched power source remains hot when the key is turned to "Start"? Make sure the ECU light stays lit while cranking. Joe Quote Link to comment Share on other sites More sharing options...
Daphur280 Posted February 24, 2010 Author Share Posted February 24, 2010 Quick question. Are you sure your switched power source remains hot when the key is turned to "Start"? Make sure the ECU light stays lit while cranking. Joe I noticed the ecu light goes on when in "on" position, but goes out during "start" position. . . thanks for the info, I'll start again from here, and see what happens. Quote Link to comment Share on other sites More sharing options...
Daphur280 Posted February 24, 2010 Author Share Posted February 24, 2010 *update* I checked this ^^ and i unplugged the starter solenoid connector and the ecu stayed lit through START, however, when i reconnect the connector to the starter it does not light through START.... anymore ideas?? I'm guessing somethings not wired right... but, I have everything wired as it is said to do so in the L28ET > S30 chassis diagrams. HELP! Quote Link to comment Share on other sites More sharing options...
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