jacob80 Posted January 28, 2010 Author Share Posted January 28, 2010 Well if the power source from the fuel pump to the relay is either disconnected or has a broken solder, that would prevent power to the positive side of the coil, but furthermore, the fuel pump would still work via the switched power source. Unfortunately, now that I think about it, the power source to the fuel pump to the relay board must work because the pump primes before cranking. Grrrr! Quote Link to comment Share on other sites More sharing options...
Zmanco Posted January 28, 2010 Share Posted January 28, 2010 So I assume you are following the wiring diagram from your post #47. Did you use the 10A fuse that it shows? If so, check it as that would explain what you're describing. In fact, with the ignition on, check to see if you have +12V where the power wire connects to the coil. Quote Link to comment Share on other sites More sharing options...
jacob80 Posted January 28, 2010 Author Share Posted January 28, 2010 Okay, I will be sure to do that when I get home. It should ve a constant 12v dc to the coil positive at all times that the key is turned on, correct? Quote Link to comment Share on other sites More sharing options...
Zmanco Posted January 28, 2010 Share Posted January 28, 2010 With the ignition on and engine not running, it should be around +12v. Quote Link to comment Share on other sites More sharing options...
jacob80 Posted January 28, 2010 Author Share Posted January 28, 2010 Okay, cool! So would you say my distributor wiring is fine, or is it not safe to assume that? I just pray it's not fried or something of the sort Quote Link to comment Share on other sites More sharing options...
Zmanco Posted January 28, 2010 Share Posted January 28, 2010 For now, go on the assumption that the problem is somewhere else. It's impossible for any of us who aren't there and seeing this with our own eyes to say that something is "fine" so keep an open mind. But as I said earlier, if while you're cranking the engine megatune is showing a few hundred rpm, then it's probably not your dizzy. BTW, have you learned how to datalog and review it with MegaLogViewer? You're going to want to use that for tuning - it's by far the easiest and fastest way to get up the curve. You might even want to capture a datalog while cranking and post it here. We might be able to see something. Quote Link to comment Share on other sites More sharing options...
jacob80 Posted January 28, 2010 Author Share Posted January 28, 2010 Yeah I tried that yesterday but no file showed up after I did it. I simpy went to file>datalogging> start datalogging then after I was done I pushed stop but then,the file was nowhere to be found I'll try it again tonigh though. I don't have to have megalogviewer running to datalog in megatune, right? Quote Link to comment Share on other sites More sharing options...
Zmanco Posted January 28, 2010 Share Posted January 28, 2010 MT should prompt you for the filename (and of course where it will be saved) when you click file>datalogging>start. If it doesn't, then something is broken with Windows or your MT installation. I'd try it again and look closely to see where MT is saving the log. And, No, MLV does not need to be running while capturing the datalog. Quote Link to comment Share on other sites More sharing options...
jacob80 Posted January 28, 2010 Author Share Posted January 28, 2010 And it did prompt me. Let me see if I do have it after all... Quote Link to comment Share on other sites More sharing options...
jacob80 Posted January 28, 2010 Author Share Posted January 28, 2010 Here is my datalog file from last night, I found it! http://www.mediafire.com/?g0njugju5jz Quote Link to comment Share on other sites More sharing options...
jacob80 Posted January 28, 2010 Author Share Posted January 28, 2010 I do notice that I doesn't show that it is cranking...maybe that is because I didn't set that cranking RPM or flood clear. Quote Link to comment Share on other sites More sharing options...
letitsnow Posted January 28, 2010 Share Posted January 28, 2010 How are you driving the coil? Quote Link to comment Share on other sites More sharing options...
jacob80 Posted January 28, 2010 Author Share Posted January 28, 2010 Megasquirt, it's jumpered Quote Link to comment Share on other sites More sharing options...
letitsnow Posted January 28, 2010 Share Posted January 28, 2010 With a vb921? Make sure you didn't fry it, check it on the stim. Quote Link to comment Share on other sites More sharing options...
jacob80 Posted January 28, 2010 Author Share Posted January 28, 2010 Vb921?...not sure what that is, maybe the triggering device in the ecu box? Quote Link to comment Share on other sites More sharing options...
jacob80 Posted January 28, 2010 Author Share Posted January 28, 2010 Wait wait wait here just a second, shouldnt my spark output be set to inverted according to this diagram? Quote Link to comment Share on other sites More sharing options...
letitsnow Posted January 28, 2010 Share Posted January 28, 2010 Yup, it's the transistor that triggers the coil, known for being kinda fragile. Make sure the IGN led blinks on the stim. Quote Link to comment Share on other sites More sharing options...
jacob80 Posted January 28, 2010 Author Share Posted January 28, 2010 Uh oh...it's not inverted. I hope I didn't fry it! If I did...is it possible to fix it opposed to buying a whole other board? Quote Link to comment Share on other sites More sharing options...
FlatBlack Posted January 28, 2010 Share Posted January 28, 2010 Uh oh...it's not inverted. I hope I didn't fry it! If I did...is it possible to fix it opposed to buying a whole other board? If it is 'fried' it's a very easy fix. http://www.megamanual.com/ms2/bip373.htm Check out #65. of the V3 board assembly http://www.megamanual.com/index.html Quote Link to comment Share on other sites More sharing options...
jacob80 Posted January 28, 2010 Author Share Posted January 28, 2010 Well I hate to say it but I bet it's fried because I haven't had the output set to inverted just ordered one just incase. I didn't harm any other parts by doin this, did I? Quote Link to comment Share on other sites More sharing options...
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