Effects of shorted secondary on primary ignition current

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Posted to Technical Theory Forum on 8/21/2003 52 Replies

Hello all,

I had posted the tale of this car on TDF, and was asked to bring it over to this forum.

Here's the original post:

[...]

Here are the scope patterns of the two coils:

The "bad" coil: [1993 Pontiac Grand Am, Ignition - Primary Waveform]

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