GottaCruise...
Could you better describe the "coil pack resistor"? Is it a part external to the coil pack? does it go between the coil pack and the external HV wire?
Which plugs get the coil pack and which the spark plug wire?
I see pictures of the coil packs on rockauto but no mention of the "coil pack resistor" as a replacement part.
I'm trying to get a grip on this concept because I'd really like to help.
Dave
Sure, the coil pack resistor goes in between the coil and the short (COP) lead, the resistor is rated at 5k Ohms,
** It serves the function of limiting output current on the short (COP) secondary coil: the short (COP) lead has essentially zero (0) resistance,
if the coil / COP lead did not have the resistor, it would run as a "hot coil", that coil would overheat / fail prematurely,
It also provides some "clipping" when the coil is fired to prevent excessive EMI / EMF being generated when the coil is fired,
It also provides for the coil to retain stored energy: on any given firing cycle, the coil has 40-60% reserve energy stored for the next firing cycle, e.g.: coil generates 15-19kv energy, it takes 7-10kv energy to generate spark at the plug: the amount of energy needed to generate spark at the plug is directly related, to the spark plug (air) gap..
It takes (more) energy to fire the fuel in the cylinder on the (compression) stroke, vs. (less) energy to fire the cylinder on the (wasted) spark / (exhaust) stroke..
Anyways, that's how I understand it, I am not an Electrical Engineer (automotive or otherwise) if any of the above is inaccurate don't kill the messenger...
