big-phil Posted January 3, 2007 Share Posted January 3, 2007 I got the car to itdle before the timming goes crazy. If I turn the key off the car stays running untill I pull the power from my switched 12+ power suply. The funny thing is I ran a test light to that power and it does turn off with the key. But the car stays running. When I disconect the swithched 12+ wire, the car shuts off? If it will stay running smooth, and shut off with the key, I think I'll have it. Because it runs great for about 10-15 sec. then the timming starts missing. I'm on my knees....HELP. thank you:D Quote Link to comment Share on other sites More sharing options...
Pop N Wood Posted January 3, 2007 Share Posted January 3, 2007 Well bump if nothing else. I remember reading something with the alternator feeding back if a diode isn't wired into the circuit properly. Hopefully someone with a more complete understanding will chime in, otherwise a search should turn up this problem. Since I AM NOT AT WORK, I got bored and did a search for you. cozy Cole posted something about what I was thinking http://forums.hybridz.org/showthread.php?t=113153&highlight=feedback http://forums.hybridz.org/showthread.php?t=113331&highlight=diode+running Quote Link to comment Share on other sites More sharing options...
big-phil Posted January 3, 2007 Author Share Posted January 3, 2007 I read that same post. I unplugged the plug that has 2 wires on it. The alternator also has 2 wires on 2 posts. I'll disconect it all together and see what that does. Quote Link to comment Share on other sites More sharing options...
olie05 Posted January 3, 2007 Share Posted January 3, 2007 somehow your MS is still getting 12v after you cut off the key. This could mean that your "main" relay is sticking, or your wiring is allowing the 12v to go to the realyboard. Maybe try replacing the relay? Quote Link to comment Share on other sites More sharing options...
big-phil Posted January 4, 2007 Author Share Posted January 4, 2007 when I unhook the alt. It will shut off with the key, but it still sputters after 10 sec. Quote Link to comment Share on other sites More sharing options...
evildky Posted January 4, 2007 Share Posted January 4, 2007 is your coil wired to a constant +? if so wire it to a switched + Quote Link to comment Share on other sites More sharing options...
big-phil Posted January 4, 2007 Author Share Posted January 4, 2007 its switched Quote Link to comment Share on other sites More sharing options...
trwebb26 Posted January 4, 2007 Share Posted January 4, 2007 When my megasquirt did this - there was a brake sensor relay thinger (bolted to the frame under the passenger seat) that was failed and was back feeding voltage (less than 9 volts) into the fuse panel into the megasquirt... it was enough juice to keep the megasquirt running. The correct way to troubleshoot this is to isolate which fuse in your fuse panel the megasquirt is hooked up to and leave it there. Start pulling the other fuses hooked up to that same circuit. If you pull the fuse and the car keeps running - put the fuse back in and try the next one. If the car shuts off - there is something on that circuit that is back-feeding voltage to the megasquirt. Quote Link to comment Share on other sites More sharing options...
mario_82_ZXT Posted January 4, 2007 Share Posted January 4, 2007 I think your timing might be way off, causing it to desiel (I think that's what the hayne's manual calls it) Did you set your timing as per the sticky (set the damper to about 50deg BTDC and all that jazz?) Mario Quote Link to comment Share on other sites More sharing options...
trwebb26 Posted January 4, 2007 Share Posted January 4, 2007 Do I need to ask if you have Magnecor wires? Quote Link to comment Share on other sites More sharing options...
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