In case you are wondering why you had 12v without the Pertronix connected
but only 6v with it, blame that chap Ohm. Until you connected it you
weren't drawing any current (the usual voltmeters only draw micro-amps) so
you weren't dropping any voltage in the coil and ballast and were 'seeing'
the full supply voltage.
Proof of the maxim that you can't usefully measure voltage in a circuit
unless you have the load connected as well as the supply.
PaulH.
http://freespace.virgin.net/paul.hunt1/
-----Original Message-----
From: Tom McLaughlin <tmcl98@yahoo.com>
To: mgs@autox.team.net <mgs@autox.team.net>
Date: 22 March 1999 21:55
Subject: Re: Ignition problems (77B), Conclusion (for now)
>Wooohooo, on the road again!
>
>Well, for those that had been following and helping with my ignition
>woes over the past few weeks, I thought I'd post the conclusion (for
>now). Quick summary. After running fine for a while, I let the car
>sit for a couple weeks in bad weather and then it quit running...no
>spark. I replaced the plugs, plug wires, and coil to no avail. It
>had a Pirana ignition module in it that was looking pretty beat up.
>On the advice of many on the list, I bought the Pertronix Ignitor
>unit, put it in Saturday and VRRRRRROOOOOOOMMMMM!
>
>One thing I'd like to understand though. Before connecting the
>Pertronix to the coil, with the ignition switch on, there was 12.3x
>volts on the (+) side of the coil. But, if I connected the red wire
>of the Pertronix unit to the (+) side of the coil and did the same
>test, there was < 6 volts! (black wire of Pertronix on (-) side of the
>coil). Is this supposed to happen??? Per the instructions, the
>Pertronix unit will not work with < 6 volts on the (+) side so I ran
>this to a 12v source and it fired right up. Anyone have any thoughts
>on this???
>
>Regards,
>Tom
>77B (sparks like a charm now!)
>
>
>
>
>
>
|