Muncher Posted July 30, 2022 Share Posted July 30, 2022 Need some help. Just put in my second engine harness. Now I have fuel and everything works but I don't have spark again. New cap and plugs tested two different coils and icms. New cps and tried to unplug it for a while and then try again and still different. What could be my issue? Link to comment Share on other sites More sharing options...
Muncher Posted July 31, 2022 Author Share Posted July 31, 2022 Tested the cps again and it is definitely fine. Tested coil and it is good. Tried to ground coil wire to block but nothing. Link to comment Share on other sites More sharing options...
Muncher Posted July 31, 2022 Author Share Posted July 31, 2022 Had the distributor yellow wire not plugged in by accident. Would this change anything with Starting? Link to comment Share on other sites More sharing options...
cruiser54 Posted July 31, 2022 Share Posted July 31, 2022 The dizzy harness? that won't keep it from starting. Link to comment Share on other sites More sharing options...
Muncher Posted July 31, 2022 Author Share Posted July 31, 2022 34 minutes ago, cruiser54 said: The dizzy harness? that won't keep it from starting. What is that? Link to comment Share on other sites More sharing options...
cruiser54 Posted July 31, 2022 Share Posted July 31, 2022 distributor. Dizzy is Australian slang for distributor. Link to comment Share on other sites More sharing options...
Muncher Posted July 31, 2022 Author Share Posted July 31, 2022 Ohh ok. But I'm not getting spark and that happened on both of the harness that I've put in. Don't you think thats probably a bad distributor? Link to comment Share on other sites More sharing options...
cruiser54 Posted July 31, 2022 Share Posted July 31, 2022 Nope. That doo-hickey inside the dizzy is for the injectors to fire sequentially. Has NOTHING to do with spark.  anyone with a 4.0 Renix, feel free to try it. Link to comment Share on other sites More sharing options...
Muncher Posted July 31, 2022 Author Share Posted July 31, 2022 Hmm weird not sure what my problem is then Link to comment Share on other sites More sharing options...
Pete M Posted July 31, 2022 Share Posted July 31, 2022 have you confirmed that your distributor is spinning around? I've seen a couple of stripped gears and broken shafts over the years.  do you have power going to the ICM?  Link to comment Share on other sites More sharing options...
cruiser54 Posted July 31, 2022 Share Posted July 31, 2022 back to basics^^. Link to comment Share on other sites More sharing options...
Eagle Posted July 31, 2022 Share Posted July 31, 2022 9 minutes ago, cruiser54 said: back to basics^^. Â ECU? Link to comment Share on other sites More sharing options...
cruiser54 Posted July 31, 2022 Share Posted July 31, 2022 I always hate to go there, but if a guy had a spare one he might try it. Link to comment Share on other sites More sharing options...
Muncher Posted July 31, 2022 Author Share Posted July 31, 2022 1 hour ago, Pete M said: have you confirmed that your distributor is spinning around? I've seen a couple of stripped gears and broken shafts over the years.  do you have power going to the ICM?  I had taken it out and the hears were fine in it. Link to comment Share on other sites More sharing options...
Muncher Posted July 31, 2022 Author Share Posted July 31, 2022 1 hour ago, Eagle said: Â ECU? Tried another ecu that wasn't the problem either. Link to comment Share on other sites More sharing options...
Muncher Posted July 31, 2022 Author Share Posted July 31, 2022 How would I check for power to the icm? And if it doesn't have power what powers it? Link to comment Share on other sites More sharing options...
cruiser54 Posted July 31, 2022 Share Posted July 31, 2022 14 gauge yellow wire from the ignition switch is where it gets its power. It is triggered by a yellow wire from the eCU. Link to comment Share on other sites More sharing options...
Muncher Posted July 31, 2022 Author Share Posted July 31, 2022 So I should check those for 12v while cranking ? Link to comment Share on other sites More sharing options...
cruiser54 Posted July 31, 2022 Share Posted July 31, 2022 I would turn the key ON and check the one from the ignition switch. Â That's the yellow wire in the 3 pin connector. Link to comment Share on other sites More sharing options...
Muncher Posted July 31, 2022 Author Share Posted July 31, 2022 Alright ill do that. Link to comment Share on other sites More sharing options...
Muncher Posted July 31, 2022 Author Share Posted July 31, 2022 Think I found my problem @cruiser54my yellow wire came of place in my push to start Link to comment Share on other sites More sharing options...
Muncher Posted July 31, 2022 Author Share Posted July 31, 2022 So I found a problem but not the problem I guess. That yellow wire was not connected properly so I fixed it snd still nothing. I also don't have power to my rem on the diagnostic ports if that helps with anything Link to comment Share on other sites More sharing options...
Pete M Posted July 31, 2022 Share Posted July 31, 2022 is there power at that wire? Link to comment Share on other sites More sharing options...
Muncher Posted July 31, 2022 Author Share Posted July 31, 2022 I also tested 3 yellow wires at the ecu and no 12v on either of them with ignition on. So don't know if that will tell you anything or not, Link to comment Share on other sites More sharing options...
Muncher Posted July 31, 2022 Author Share Posted July 31, 2022 Yes there is power out of the yellow wire @Pete M Link to comment Share on other sites More sharing options...
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