Metro Posted September 30, 2005 Share Posted September 30, 2005 I've been having problems with my motor for a few weeks now, miss at idle, stumble around 2000-2700rpm, won't rev up when it's cold, etc. Now the other day when I was reving it and listening to the motor is just slowly died and won't restart. I have a fuel pressure gauge, so I know fuel is good. I believe there's something wrong with the ignition. I have spark, but it looks weak - it's also reddish/white spark. If I do a spark test with a plug, it looks inconsistent and weak. Coil is getting 12volts when cranking, so I don't see a problem there. Today I bought a new rotor and cap and I'm using the good plug wires from my N/A L28, but still no good. I did some research tonight and it sounds like it might be a bad transistor (ignitor). Does this sound like anything anyone has come across before? Quote Link to comment Share on other sites More sharing options...
evildky Posted September 30, 2005 Share Posted September 30, 2005 I would suspect the COIL or the wiring , when my ignitor went bad the car died on the interstate! and wouldn't restart! ever! till I replaced the egnitor! ok now I'm just having fun with exclamation marks! Quote Link to comment Share on other sites More sharing options...
getZ Posted September 30, 2005 Share Posted September 30, 2005 I agree, usually when the ignitor fails, it fails hard. I would suspect the coil more than anything and after market coils are relatively cheap. Blaster II coils can be had for around thirty bucks. Quote Link to comment Share on other sites More sharing options...
R0N Posted September 30, 2005 Share Posted September 30, 2005 Same here. When did my first turbo transplant, I could not get my Z started. It wouldn't even fire up for a half a second. Once replace, started right up. Coil, plug wires, or even the wiring? Worst case the computer. What have you tried? Quote Link to comment Share on other sites More sharing options...
Metro Posted October 1, 2005 Author Share Posted October 1, 2005 I've tried everything I can think of, everything crappy haynes manual says and everything my Dad(mechanic, but diesel generators mostly) can think of. So like power to the coil, power when cranking, resistance of the coil, multiple grounds to the coil, different plug wires, haven't tried a new coil yet though. But now it's looking maybe it's not ignition related. When I was playing with it today, I had all the injector plugs disconnected and the damn thing fired for a few seconds. So hooked the injectors back up and pulled a vacuum line, played with it and was able to get the car running after giving it a small leak. It will even rev up. When my 76 had bad injectors and was dripping fuel, I couldn't get it rev over 2000rpm without it dying. This ecu/motor is driving me freaking crazy for months now. Fuel pressure is good, injectors are new. Even if I got it running again, it ran horrible before it flat out died the other day. I just don't get it, but for those 2 weeks back in July it was awesome :| Quote Link to comment Share on other sites More sharing options...
getZ Posted October 2, 2005 Share Posted October 2, 2005 You might also check the head temp sensor, not sure if yours has one or not. When my turbo motor had the temp sensor disconected it really ran bad (rich) blowing a lot of smoke out the back. Quote Link to comment Share on other sites More sharing options...
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