Vsixpack Posted December 28, 2013 Share Posted December 28, 2013 Hi everyone, I'm new here looking for help. For the last 10 years I've been working on this project and finally installed the engine and transmission. Used a painless wiring kit for the application, and reprogrammed the PCM to eliminate unnecessary components, tested opti spark and injector pulse and all checks out but I still have no spark. I left it alone for about 6 months out of frustration but I think I'm ready to jump back on the saddle and burn some rubber before the end of the year. Can anybody help? Thank you all in advance Quote Link to comment Share on other sites More sharing options...
Norman V Posted December 28, 2013 Share Posted December 28, 2013 Have you checked the coil and module? They tend to go bad. Quote Link to comment Share on other sites More sharing options...
Vsixpack Posted December 28, 2013 Author Share Posted December 28, 2013 Yes, I checked it according to some schematic I got online but I might have not done it right. I'll check it again. Thanks! Quote Link to comment Share on other sites More sharing options...
mark Posted December 29, 2013 Share Posted December 29, 2013 Be sure you have ignition powered while cranking. I had mine wired where it had power in on position but no power while cranking. Was vats removed from PCM? As mentioned ignition modules will go out on these. Quote Link to comment Share on other sites More sharing options...
Vsixpack Posted December 29, 2013 Author Share Posted December 29, 2013 I have constant 12v ignition while cranking, can a ignition module be faulty even when it checks out ok? Does any body know the right voltage parameters to the ignition module? Quote Link to comment Share on other sites More sharing options...
Vsixpack Posted December 29, 2013 Author Share Posted December 29, 2013 The VATS was removed from the PCM, however the by pass module that comes with the painless harness is wired. Thanks Mark! Quote Link to comment Share on other sites More sharing options...
gvincent Posted December 31, 2013 Share Posted December 31, 2013 Do you have a bulb for the SES light? (Service engine soon or CEL) Have you checked the VATS was really removed, do you have the Fuel pump wiring correct with the PCM? Check the injectors with NOID indicator I believe they need a negative voltage to trigger. Just tossing around a few ideas Some of these kept me from running when I was trying to start it 5 years ago? Do you have a laptop and TunerCAT?, sometimes the VATS programmed out works just fine but others have had to also put a resistor inline that was the same value as the ignition key resistor chip Quote Link to comment Share on other sites More sharing options...
331CI 280z Posted February 11, 2014 Share Posted February 11, 2014 Did you figure this out? I have a Callaway Camaro with a LT1 and the ignition is the weak link on these engines. I had an ignition module go bad and I replaced it with a new one and still had a no start condition. After going through everything and wasting countless hours and hundreds of dollars on parts, it turned out that the replacement module I had put in was bad too. Brand new out of the box. Quote Link to comment Share on other sites More sharing options...
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