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battery draining every night



 
 
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  #1  
Old April 15th 05, 04:04 AM
jchill43
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Default battery draining every night

have a 95 land rover discovery that is draining the battery every
night?
any ideas as to what could be doing it? No lights no radio are left on
but something is draining it and its driving me nuts
Any help would be most welcomed

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  #2  
Old April 15th 05, 05:02 AM
.boB
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jchill43 wrote:

> have a 95 land rover discovery that is draining the battery every
> night?
> any ideas as to what could be doing it? No lights no radio are left on
> but something is draining it and its driving me nuts
> Any help would be most welcomed
>

Assuming the battery is in good shape, finding a
short can be a real pain in the neck. Disconnect the
main battery cable and place a volt meter in series.
If there's any kind of power draw you'll get a reading
on the meter. Now start pulling fuses until the power
draw disappears.
Sounds simple, doesn't it? Unfortunately, with
modern computer controlled cars it's often more
difficult than that. If you can't find the offensive
circuit, you'll need get schematic and find all the
circuits that don't go through the fuse box. It can be
a very tedious process.

--
..boB
1997 HD FXDWG - Turbocharged!
2001 Dodge Dakota QC 5.9/4x4/3.92
1966 Mustang Coupe - Daily Driver
1966 FFR Cobra - Ongoing project

  #3  
Old April 15th 05, 02:31 PM
Peter D. Hipson
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Did you measure current draw when off? Don't do one measurement, but
monitor it for a while.

Did you test the battery?

Either could be your problem, but without tests you'll never know. If
the battery is over three years old, maybe a good idea is to replace
it anyway.

On 14 Apr 2005 23:04:54 -0400, jchill43
> wrote:

>have a 95 land rover discovery that is draining the battery every
>night?
>any ideas as to what could be doing it? No lights no radio are left on
>but something is draining it and its driving me nuts
>Any help would be most welcomed


  #4  
Old April 15th 05, 11:42 PM
bowgus
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I think you meant ammeter (or multimeter in A(mmeter) mode, not voltmeter)
in series.

> Disconnect the main battery cable and place a volt meter in series.



  #5  
Old April 16th 05, 01:49 AM
.boB
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bowgus wrote:

> I think you meant ammeter (or multimeter in A(mmeter) mode, not voltmeter)
> in series.
>
>
>>Disconnect the main battery cable and place a volt meter in series.

>
>
>

No, I meant voltmeter. Try it.

--
..boB
1997 HD FXDWG - Turbocharged!
2001 Dodge Dakota QC 5.9/4x4/3.92
1966 Mustang Coupe - Daily Driver
1966 FFR Cobra - Ongoing project

  #6  
Old April 16th 05, 03:52 AM
fordmandan
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pull your fuse on your anti-theft system

  #7  
Old April 16th 05, 04:22 AM
Paul Hovnanian P.E.
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".boB" wrote:
>
> bowgus wrote:
>
> > I think you meant ammeter (or multimeter in A(mmeter) mode, not voltmeter)
> > in series.
> >
> >
> >>Disconnect the main battery cable and place a volt meter in series.

> >
> >
> >

> No, I meant voltmeter. Try it.



That'll work for a rough indication. If there is any leakage path with
an impedance significantly lower than that of the meter, you'll read
battery voltage. Once all circuits are open, the VM will read zero
(since the load side of the meter is effectively disconnected, just like
waving the probe around in the air).

The voltmeter trick is safer than an ammeter in the event too large a
load is connected unexpectedly. The ammeter will either blow a fuse or
smoke.

--
Paul Hovnanian
------------------------------------------------------------------
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  #8  
Old April 16th 05, 04:55 AM
Mad Dog
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Remove the negative battery cable from the battery and install a test light
between the neg. cable and neg. battery post....cable end of test light to
post and probe end of test light to neg. cable.
a bright light indicates a strong current draw... a dim light indicates a
weak current draw.
Components that run when the key is off will have a static current draw on
the battery but not enough to drain the battery overnight unless something
is shorted and drawing way too much current.
Check the battery and replace if faulty.

--
Mad-Dog
'79 Chevy K-10
Slightly modified
pictures can be found he
http://mad-dog16.tripod.com/
--
"jchill43" > wrote in message
news:1_527291_c4e5eca8cc6c13d8a1219b2681901520@aut oforumz.com...
> have a 95 land rover discovery that is draining the battery every
> night?
> any ideas as to what could be doing it? No lights no radio are left on
> but something is draining it and its driving me nuts
> Any help would be most welcomed
>
> --
> Posted using the http://www.autoforumz.com interface, at author's request
> Articles individually checked for conformance to usenet standards
> Topic URL:
> http://www.autoforumz.com/4X4-batter...ict112223.html
> Visit Topic URL to contact author (reg. req'd). Report abuse:
> http://www.autoforumz.com/eform.php?p=527291



  #9  
Old April 16th 05, 01:22 PM
Peter D. Hipson
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On Fri, 15 Apr 2005 18:49:50 -0600, ".boB"
> wrote:

>bowgus wrote:
>
> No, I meant voltmeter. Try it.


Won't give you an accurate reading of current if it is a voltmeter.
All vehicles today have some draw key off. It is the amount of draw
that is important, and a voltmeter won't indicate that.

 




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