Funwithmonkeys Posted December 30, 2019 Report Share Posted December 30, 2019 Hi Guys, I am just starting the conversion of my Datsun 510 to EFI. I have a G4+ AtomII. I am just looking for something to get it running so I can get it to the tuner so he can put it on the dyno and properly tune it. The motor is a custom built 2.3L based on the L20B. Thanks in advance Quote Link to comment Share on other sites More sharing options...
Funwithmonkeys Posted February 1, 2020 Author Report Share Posted February 1, 2020 Still looking...any 4 cylinder L series map, KA map or SR map will do ad long and it is NA. Quote Link to comment Share on other sites More sharing options...
Adamw Posted February 1, 2020 Report Share Posted February 1, 2020 Does it have a plenium/single throttle or ITB's? Whats it got for a trigger and ign system? Does it have a MAP sensor? What size injectors etc? Quote Link to comment Share on other sites More sharing options...
Funwithmonkeys Posted February 1, 2020 Author Report Share Posted February 1, 2020 Thanks for the reply. I am using Jenvey 45mm throttle bodies. 630cc injectors. The onesix industries CAS with 24+1 tooth trigger pattern and 2 reluctors so it will do Crank angle and cam position and LS coils. I am not putting in a Map sensor. Quote Link to comment Share on other sites More sharing options...
Adamw Posted February 3, 2020 Report Share Posted February 3, 2020 This should be a decent starting point. 45mm ITBs.pclr Quote Link to comment Share on other sites More sharing options...
Funwithmonkeys Posted February 11, 2020 Author Report Share Posted February 11, 2020 Thank you so much. Quote Link to comment Share on other sites More sharing options...
Funwithmonkeys Posted March 15, 2020 Author Report Share Posted March 15, 2020 Well I have everything installed and I am doing some testing before attempting to start and I have no spark when doing a ignition test. I am using LS coils. I am seeing no trigger voltage from the ECU. Is there a setting that was missed? Quote Link to comment Share on other sites More sharing options...
Apex Speed Tech Posted March 16, 2020 Report Share Posted March 16, 2020 Hi there, Here are my steps for diagnosing no-spark in almost any ECU: Power - is there 12V at the coil? There should be 12V between the inner and outer pins on an LS3 Coil Connector Power - is there 12V at the ECU? There should be 12V between Pin 5 and both pins 25 & 34 on the Atom ECU Comms - you can communicate with the ECU, correct? Triggers - Are you reading Engine RPM during cranking? Triggers - Do you have any errors on Trigger 1 or Trigger 2 which increment under cranking? What is your trigger setup? Would you like to post the map that you are using, I'll be happy to look. Cheers, Neel Quote Link to comment Share on other sites More sharing options...
Funwithmonkeys Posted March 16, 2020 Author Report Share Posted March 16, 2020 Thanks Neel, I have tested voltage at the coils and it is good. I am just not seeing a trigger voltage for the coil. I should see 5v on the ignition wires (blue with a colored stripe) and I am seeing nothing. When I checked them all 4 appear to be direct to ground. I use the ignition test and I am seeing no voltage at all on the ignition wires. The ecu is working fine. I can connect and I see engine rpm. Quote Link to comment Share on other sites More sharing options...
Adamw Posted March 16, 2020 Report Share Posted March 16, 2020 What are you using to confirm “there is no ignition signal”? In test mode the dwell (~6V) is only 2ms long so a multimeter or incandescent test light will not be fast enough to see it. What specific LS coils have you used? - be aware there are two different pinouts for the common LS coils. Quote Link to comment Share on other sites More sharing options...
Funwithmonkeys Posted March 16, 2020 Author Report Share Posted March 16, 2020 Sorry I thought it would be a longer signal on the test mode. I am using ls1 coils. I have a ls wire harness for the coils so the wiring was pretty easy to figure out. With a spark plug attached and grounded I see no spark in test mode so is there another way to check it? Quote Link to comment Share on other sites More sharing options...
Adamw Posted March 16, 2020 Report Share Posted March 16, 2020 I would start by confirming the pinout is correct at the coils. From memory the early ls1 coils the two right hand pins are ground, the far left is 12V, the remaining is the ign signal. There is a pinout for the early and late gm coils in the help file (I’m not at a pc now). Search LS1 and you will find it. Quote Link to comment Share on other sites More sharing options...
Funwithmonkeys Posted March 16, 2020 Author Report Share Posted March 16, 2020 The pinouts are correct. I have confirmed from multiple sources. Quote Link to comment Share on other sites More sharing options...
Adamw Posted March 16, 2020 Report Share Posted March 16, 2020 Can you attach a photo of the coils you have Quote Link to comment Share on other sites More sharing options...
Funwithmonkeys Posted March 16, 2020 Author Report Share Posted March 16, 2020 I have the D580 coil. I have attached a copy of how the wiring is set up. Quote Link to comment Share on other sites More sharing options...
Apex Speed Tech Posted March 16, 2020 Report Share Posted March 16, 2020 I wouldn't put a lot into not seeing 5V on the ignition outputs until we'll confirmed the most basic thing: Is the ECU actually trying to trigger the coil? 1. No trigger errors? 2. Do you have injector pulse when cranking? 3. Do you have an oscilloscope or access to one? Thanks, Neel Quote Link to comment Share on other sites More sharing options...
Funwithmonkeys Posted March 16, 2020 Author Report Share Posted March 16, 2020 Ok so I feel like a bit of an idiot. I had a bad ground. I am now getting spark when I do a ignition test. The link is seeing the cam and crank trigger inputs and I am getting no errors. I get no spark or injector pulse when cranking. I do not have a scope. I am very new to injection so I may be missing something obvious. Quote Link to comment Share on other sites More sharing options...
Ducie54 Posted March 17, 2020 Report Share Posted March 17, 2020 Post your map and a small log file Quote Link to comment Share on other sites More sharing options...
Apex Speed Tech Posted March 17, 2020 Report Share Posted March 17, 2020 Yep, double that request. There's likely a parameter causing a commanded cut and it should be easy enough to sort out. Quote Link to comment Share on other sites More sharing options...
Funwithmonkeys Posted March 17, 2020 Author Report Share Posted March 17, 2020 Here is what I have. It is saying my log file is too big. 510 base.pclr Quote Link to comment Share on other sites More sharing options...
Adamw Posted March 18, 2020 Report Share Posted March 18, 2020 6 hours ago, Funwithmonkeys said: It is saying my log file is too big You can upload it to Onedrive/Google Drive/drop box or similar and right click on it and choose "share link". Paste the link here. Quote Link to comment Share on other sites More sharing options...
Funwithmonkeys Posted March 18, 2020 Author Report Share Posted March 18, 2020 https://drive.google.com/file/d/1W01RFkitgN0DuELXJEd2JdF_SuYvRkX6/view?usp=sharing here it is. Thanks everyone Quote Link to comment Share on other sites More sharing options...
Apex Speed Tech Posted March 19, 2020 Report Share Posted March 19, 2020 That's 90 minutes of an ECU logging with the engine off. Got a dataset with you cranking or something? I don't see anything too obvious in your map, though for good measure I'd set Chassis and Body/Anti Theft/Allow CAN Anti-Theft Request to OFF. Quote Link to comment Share on other sites More sharing options...
Funwithmonkeys Posted March 19, 2020 Author Report Share Posted March 19, 2020 I think I may have forgot to turn the power off and it was just logging nothing. I will crank it for a bit tomorrow and put the new log up. Quote Link to comment Share on other sites More sharing options...
Adamw Posted March 19, 2020 Report Share Posted March 19, 2020 I suggest you do a PC log with all parameters recorded. This video shows you how to set it up and record it: https://youtu.be/_P1LRANeO4A Quote Link to comment Share on other sites More sharing options...
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