[Red Green Jr]

My bronco has been sitting for most of the summer with occasional use on the weekends only. One weekend, I tried to start it and it just wouldn't fire. After a while I tested the spark, and there was none. The distributor and coil were only a few months old and have been working great. Since the problem started I have replaced the voltage regulator, ignition module and the starter, I have tested all of the wiring to the coil and made sure that power is getting to the ignition module. When I was testing voltage to the ignition module, I got 12V when the key was turned to "on", but when I started cranking, the voltage dropped to 0.4V, which is obviously not enough to make a spark. The only possible candidates left are a bad ignition switch, or some other system is tied into the ignition and is sucking all the voltage. Other than that I have no idea what the problem is and am running out of patience.

thanks

This post has been edited by Red Green Jr: 01 September 2008 - 01:17 PM

[Seabronc]

What ignition system do you have installed in it? Is it a Duraspark II? If that is the case then the pickup coil inside the distributor is bad. If it is a Duraspark II then I can upload you a diagram and troubleshooting procedure.

Good luck,

[Red Green Jr]

Its a duraspark, I have no idea if its a duraspark II or what. Is there a difference?

[Seabronc]

It probably is. Here are the diagrams and proceedure.

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[Red Green Jr]

Thanks a lot!

This post has been edited by Red Green Jr: 07 September 2008 - 05:18 PM

[Red Green Jr]

After more work, i still have not solved the problem. I had a few possible solutions, but none of them worked. I replaced the ignition switch too. Just this weekend, one of the wires popped out of the pigtail leading from the ignition module. I am getting a new pigtail and hoping that that was the problem. I had tested continuity in the wires before and it looked good, but old, corroded wires can be very flaky. Any more info would be greatly appreciated. thanks

[Red Green Jr]

she lives!!! turns out it was the pigtail leading from the ignition module to the coil. i had checked it before and it passed but i guess it disconnected when i plugged it back in. so thats $83 of replacing working components and an $8 fix, aint life grand.