ION-related IGN Comments & Coil Quest

[Shannen Durphey]

T Hergen wrote:
> 
> An autotransformer (the auto has nothing to do with automotive) is one
> that shares a common connection between the primary and secondary.  Using
> an ohm meter, you'd find resistance bewteen any two terminals.
> 
Thanks.
> Since you mention the vortec, on mine, I tried measuring the resistance
> between the high voltage terminal (to the distributor) and the case, but
> didn't get any reading.  Assuming the coil is okay, this seems to indicate
> that this coil doesn't use the metal frame as a ground.  Is this what
> you'd expect?
> Tom
No.  Not at all.  But GM has changed a lot of designs
lately.  What year/vehicle/engine size?