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Coil re-attack

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Old Apr 4, 2016 | 11:07 AM
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Default Coil re-attack

Well, after posting in the Ignition section and thus far, the only response has been that coils are as fickle as women, I decided to try a frame-specific request:


Since acquiring my '03 Dyna FXDWG in '08 I have gone through 3 coils, all within the last 4 years. Additionally, I have gone through 2 voltage regulators. The stator still appears healthy and the current battery remains fully charged (replaced 3 years ago). I have less than 30k miles on the girl so I am at a loss as to a root cause.


Coils are heralded as being near bullet-proof as are VRs. Any thoughts as to a possible explanation?
 
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Old Apr 4, 2016 | 12:38 PM
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I'm not real good with electrical, but it seems to me the stator/rotor would be at the heart of the problem. Interesting your ignition and lights are surviving, though. I dunno...
 
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Old Apr 4, 2016 | 02:16 PM
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We work with coils daily, thousands of them each year. It is VERY rare for a coil to go bad, let alone 3 in 4 years.

VR's are not quite so bullet proof.

I would re-check the stator, but from what you describe, it seems there is a wiring short(s) somewhere causing these failures.

Not fun, because there's better than a hundred feet of wire to inspect, along with all the connections.
 
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Old Apr 4, 2016 | 04:21 PM
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Maybe your voltage regulator was putting out too much power and that is what messed up your coils.
 
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Old Apr 5, 2016 | 08:29 AM
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Thanks, Kevin. When it warms up, I will spend some quality time tracing the wiring.


v.r
rj
 
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