Hey guys, Im going out of my mind with this issue.My son's 91 civic keeps losing ign once op temp is reached. It's also pulling a code one...o2 sensor that has been changed. these are some of the things done....new complete dizzy,new bat, new fan relay, new rad,new plugs ,new wires,cleaned grounds,checked fuses,ect ect. The new dizzy is after market and im sure im going to here a bunch of s@#t for doing that but it ran fine for about a month.....bad ignitor???WTF

 

Changed ign module " honda's version"...117.00 Problem solved. Thanks for ALL your comments.LOL

 

The way I determined this is I tested the yellow wire with the green stripe.."at the distributor plug"... with a led testor.While starting the car the testor flashed which told me ECU was sending pulse signal. I then tested neg side of the coil to see if ignitor was sending the coil a pulse. It wasn't.