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Don't think we can diagnose the multimeter, but you should compare readings
amongst all the meters and see if they have the same reading on a known
electrical load.
Generally speaking if your hot rod is draining the battery, it's probably
because there's a grounding issue somewhere. Easiest fix is to put an
isolation switch on the batter and just shut it off when you're not
driving. This is good practice anyway.
On Thu, Feb 11, 2021 at 8:04 AM llennep--- via Healeys <
healeys@autox.team.net> wrote:
> Hello Listers,
> I am seeking to tap the knowledge of the list on this general auto matter.
> I bought a hot rod last year and from the get go I have had a battery
> drain. If system is left on the batt will get too weak to start engine in
> a couple days or so. Recently I have been chasing the problem in earnest.
> I did find one issue and resolved that with the hope that the drain was
> fixed. No. Still there.
> So yesterday I began preparing for the standard search method - pulling
> fuses one at a time and noting the drop in amps running through the
> system. However I needed a dependable multimeter. I have 3 but do not
> trust the amperage reading on any of them. I secured a known good meter
> today and here is what I am observing.
> The reading starts out reading a few tenths amp fluctuating wildly and
> then drops to almost 0 in 2-3 seconds. This happens time after time. What
> is going on here? Why is the meter behaving this way?
> Any help much appreciated.
> Keith
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<div dir=3D"ltr">Don't think we can diagnose the multimeter, but you sh=
ould compare readings amongst all the meters and see if they have the same =
reading on a known electrical load.<div><br></div><div>Generally speaking i=
f your hot rod is draining the battery, it's probably because there'=
;s a grounding issue somewhere.=C2=A0 Easiest fix is to put an isolation sw=
itch on the batter and just shut it off when you're not driving.=C2=A0 =
This is good practice anyway.</div><div><br></div><div><br></div></div><br>=
<div class=3D"gmail_quote"><div dir=3D"ltr" class=3D"gmail_attr">On Thu, Fe=
b 11, 2021 at 8:04 AM llennep--- via Healeys <<a href=3D"mailto:healeys@=
autox.team.net">healeys@autox.team.net</a>> wrote:<br></div><blockquote =
class=3D"gmail_quote" style=3D"margin:0px 0px 0px 0.8ex;border-left:1px sol=
id rgb(204,204,204);padding-left:1ex">
<div style=3D"color:black;font:10pt arial">Hello Listers,<span></span>
<div>I am seeking to tap the knowledge of the list on this general auto mat=
ter.</div>
<div>I bought a hot rod last year and from the get go I have had a battery =
drain.=C2=A0 If system is left on the batt will get too weak to start engin=
e in a couple days or so.=C2=A0 Recently I have been chasing the problem in=
earnest.=C2=A0 I did find one issue and resolved that with the hope that t=
he drain was fixed. No.=C2=A0 Still there.</div>
<div>So yesterday I began preparing for the standard search method - pullin=
g fuses one at a time and noting the drop in amps running through the syste=
m.=C2=A0 However I needed a dependable multimeter.=C2=A0 I have 3 but do no=
t trust the amperage reading on any of them.=C2=A0 I secured a known good m=
eter today and here is what I am observing.</div>
<div>The reading starts out reading a few tenths amp fluctuating wildly and=
then drops to almost 0 in 2-3 seconds.=C2=A0 This happens time after time.=
=C2=A0 What is going on here?=C2=A0 Why is the meter behaving this way?</di=
v>
<div>Any help much appreciated.</div>
<div>Keith</div>
</div>
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rer" target=3D"_blank">http://www.team.net/donate.html</a><br>
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Archive: <a href=3D"http://www.team.net/pipermail/healeys"; rel=3D"noreferre=
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utox.team.net/archive</a><br>
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eam.net</a><br>
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r" target=3D"_blank">http://autox.team.net/mailman/listinfo/healeys</a><br>
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s/healey.nut@gmail.com" rel=3D"noreferrer" target=3D"_blank">http://autox.t=
eam.net/mailman/options/healeys/healey.nut@gmail.com</a><br>
<br>
</blockquote></div>
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