Very odd update to 89 200 voltage drop

[Huw Powell]

Sounds like the quality of the ground connection when you are measuring
the battery isn't as good as when you are up front.  Try using a long
wire for the ground so it is the same in both cases, and make sure your
positive lead is making full contact with bare metal.

It also sounds like you have one or both of these problems... bad splice
thingie in the main battery cable (under the carpet) and/or a tired battery.

> Ok, I can't figure this one out at all.
>
> When the car ran a couple days ago.  I measure 13.9 to 14 volts with my
> multimeter on the jumper post.  At the battery it was around 12.5 to 12.8
> volts.  The car didn't start this morning, so I had to use the backup 90q.
>
> So out of curiosity, I went to measure the voltage just now.
> I pulled about 5.5volts on the battery positive terminal. (either something
> is draining it, or the battery is goin bad)
> Now here is the weirdest thing ever.  I measured almost 8 volts on the
> jumper!!
>
> How in the world can I be gaining 2 volts?  I am so befuddled by this.
> Since I have tomorrow off, I planned on fixing the footwell splice in the
> morning.  I guess I will reevaluate after that is done.
>
> Any insight on this would be lovely.  I am very confused here.

--
Huw Powell

http://www.humanspeakers.com/audi

http://www.humanthoughts.org/