Make sure you have a good ground connection to the control box. I had this same
issue with a Crane on one of my cars.
Mark
-------------- Original message ----------------------
From: Kendall Larsen <mailkendall@sbcglobal.net>
> Hey again list,
>
> Last post for tonight...
>
> As punishment for taking to long to finish the simple fork pin repair, an
> electrical gremlin found its way into my ignition system.
>
> - 74.5 TR6
> - Crane Fireball XR700 electronic ignition about 9 years old. Not many miles
> though.
> - Standard Alternator
> - Electric Fan
> - Otherwise stock
>
> After I've been driving for 5 - 15 minutes, the ignition will completely drop
> out. Sometimes just glitch just for an instant and then will keep going. More
> often though it will completely die, and after sitting for several minutes the
> spark will return. I'm certain that it is the spark going away because the
>last
> time it died I pulled the coil wire and checked for spark, and there was
>none..
> and after a few minutes the spark returned and I could drive home. It will die
> when driving at a constant rate, idling, or while accelerating.
>
> The optical pick-ups / shutter / trigger inside the distributor cap had a bit
> of dust on them that I cleaned off with a q-tip. I drove it up the street (up
> hill) a few times this morning after cleaning the optical trigger and it
>didn't
> die on me. I know as soon as I try and go somewhere inconvenient it will
> probably crap out again though.
>
> Has anyone had a Crane XR700 go intermittent on them? IT would be easier if it
> would just fail completely! Thoughts? Advice to switch back to points or at
> least carry a set? All welcome... thanks!
>
> Kendall
> San Clemente, CA
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