OK, i am new to posting, i have an 85 bronco that was running fine. All of the sudden it just died. It will start sometimes and not others. it is getting fuel and sometimes i have spark and sometimes i do not??
I am having a no spark problem as well. How is the coil tested, I can not find the book. I was driving under heavy accelration and the engine just quit instantly. I put a timing light on it to test for spark and got nothing. There is a small capaciter just before the coil and the wire to it was broken so I have my suspicions. I reconnected it to no avail. I thought coils are fairly bullet proof.
also riggsdua, I have been looking into the stator in the distributor and various others. I am going to go look at my rig now and will post what I find. I am also going to start a new thread with my specific details and see if anyone has a light bulb go off.
I've mentioned this before but I'll do it again---just for drill. Over the last 35 years I've had at least 4 coils on four completely different types of vehicles go bad. If I recall there were 2 that were only producing a fraction of enough output voltage (but enough to keep the engine at least idling) to operate under load, one that had a crack in it (that would emit a lightening bolt to the nearest ground when the gas pedal was stomped on) and one that basically melted it's windings.
Just something to ponder and remember in the future........
replace your ignition box......mine did the same thing drove me nuts....replace 2 coils, 1 battery, many bad words only to find it was the ignition module. that wonderful large box on the left fender. no problems since. hope this helps.