[TR] what is going on?????

[Don Hiscock]

I had a 1988 XJ Cherokee for twenty plus years.  Loved it, but the Jeep was
buggy.  Wait until you get into the closed cooling system...

My brother and I found some ground loops that were playing havoc with the
electrical system.  Bonded some of the major assemblies together and it
made it a lot happier.  You might check to make sure the different parts of
the XJ are on the same ground plane.

On Sat, Jun 13, 2020 at 9:58 PM dave <dave at ranteer.com> wrote:

> We bought a car a few months ago (an 88 jeep actually).  Wasn’t running or
> driving, needed some work, battery was dead.
>
>
>
> Today we finally got it running and driving using a known good battery
> from another car.
>
>
>
> Set the jeep’s battery up on a charger a day or two ago and decided to try
> it in the jeep after all we succeeded in getting it running and driving.
>
>
>
> Hooked up the positive first, then touching the negative caused a spark!!!!
>
>
>
> Double checked that we had the ground to the engine and the positive to
> the electrical system.
>
>
>
> The multimeter, with the red on the positive terminal and the black on the
> negative, read -9.97
>
>
>
> Reversed it and got 9.97.
>
>
>
> Checked the good battery – no, the multimeter is not broken.
>
>
>
> Checked the jeep’s old battery again, same results.  Good battery – same
> results (about 12.97)
>
>
>
> What is going on????  how is this possible?  Yes, we are replacing the
> battery but if someone had told me this story I would have told him he must
> have mixed up the terminals, that its not possible.
>
>
>
> Can anyone explain this to me?
>
>
>
> And yes, we are replacing the battery
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