Re: Replacement MSD Coil

["cruznmd" <racuti1@xxxx>]

I realize this discussion wasn't about -my- car but my voltage across
the coil (+ to -) terminals was only 6.73 volts. All of the
resistances were in spec by the manual -except- the coil, (+) terminal
to H.T. socket, it's supposed to be 7000 ohms and mine is 9500-ish.

It's an original coil. This tells me my spark won't be as good due to
the extra resistance. True Jan? Or am I hosed up?

I'm a telecom and computer nerd. I had B&EE in the navy but I'm no
engineer.

--- In dmcnews@xxxxxxxxxxxxxxx, Jan van de Wouw <jvdwouw@xxxx> wrote:
> On Tue, 29 Jul 2003 10:02:33 -0400, Hank wrote:
> 
> > I'm pretty sure the coil is the problem.
> > When disconnected, I'm getting a full 12 volts on the
> > two wires that connect to terminal #15 (+) on the coil,
> > but that drops to 4.6 volts as soon as I connect them
> > to the coil. 
> 
> Ehm... Basic physics says that on an OPEN circuit, the
> voltage across the gap ALLWAYS is as high as the feed
> for the circuit...
> 
> Only once you connect ANYTHING in the gap an actual
> voltage can be measured on the component...
> 
> If you're getting 4.6V over the coil, you're loosing 7.4V
> somewhere... What voltage do you get across the resistors?
> 
> JAN van de Wouw
> 
> Thinking Different... Using a Mac...
> Living the Dream... Driving a DeLorean...
> Shifting Expectations... Driving a Nissan...
> 
> DMC-12 "Dagger" since Sep. 2000
> 100NX "Saphire" since Nov. 2002
> -------------------------------