Arthur Pfenninger wrote:
>
> I posted this a week ago or so, so it may look familiar to some.
> To test the coil for internal resistance disconect all the wires going to
> the coil. Set your multimeter to the lowest ohms scale. Now with the meter
> connected to the + and - side of the coil you should get a reading of
> about 1.5 to 3 ohms. Much higher or lower indicates a bad coil. Next check
> the secondary circut. Set the meter to the high scale and put one lead on
> either the + or- terminal. Put the other lead into the tower at the top
> of the coil. You should get a reading of between 6,000 and 30,000 ohms.
> copy this reading down along with the scale you got it on. If your coil
> turns out to be good you can use this reading in the future when the coil
> may again be in question. This will be your bench mark. The last test that
> you need to do is for an internal ground. Set the meter to the high ohms
> scale and connect one lead to the + or - side of the coil and put the
> other lead onto the case of the coil. The needle should not move at all.
> If it does there is an internal ground and the coil must be replaced.
> If you want to check the condenser there are a couple of ways to
> do it. Disconnect the small wire and make sure it is not touching
> anything. Set your multimeter to the dc scale and measure the voltage from
> the disconnected small wire to the to the screw on the distributor that
> the wire is normally connected to. If you get any voltage the condenser is
> bad. The other way involves using a screw driver on the points while the
> condensor is disconnected but I won't go into it now because I don't want
> to run on and on and...
> ...Art
>
> On Thu, 7 Aug 1997, Steve Tritle wrote:
>
> > Arthur Pfenninger wrote:
> > >
> > > Open the hood and take a look at the spark plug wires and coil in
> > > the dark. You might also want to spray a little water on them, you may
> > > have a bad wire or coil. Also did you clean the cap?
> > > ...Art
> > >
> > > On Wed, 6 Aug 1997, Steve Tritle wrote:
> > >
> > > > The TD has been running great for 2500 miles. Went out for a spin and
> > > > got a "rough" running engine. I decided to check the points and they
> > > > were pitted so I filed them smooth. Started and still not quite right.
> > > > So now I am changing condensors. Each of three condensors do not do the
> > > > trick. Could the points need replacing or maybe even the coil? I had no
> > > > problem with the car one day and the next day I started it up and it
> > > > will not run well. I did clean out the carbs, filter at fuel pump etc.,
> > > > etc. The timing is right on the mark and the points are gapped to .o11.
> > > >
> > > > Coil or points or maybe even a fourth condensor? What do you think?
> > > >
> > > > Steve
> > > > 52 TD
> > > >
> > How can I tell if the coil is bad?
> > Steve
> > 52 TD
> >
My problem is solved. Checked the coil and it was OK. Replaced all
plugs, points, condensor and the car now runs well again. I do not know
what did the trick but all is well again.
Steve
52 TD
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