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Old 07-06-2005, 10:01   #1 (permalink)
Land
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1994 Ford Thunderbird keeps killing my battery Please help

I can't figure out what is killing my battery and need help. Please give
me some idea as to what may be draining my battery and how to fix it.

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Old 07-06-2005, 18:01   #2 (permalink)
Rob
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Re: 1994 Ford Thunderbird keeps killing my battery Please help

Land wrote:
> I can't figure out what is killing my battery and need help. Please give
> me some idea as to what may be draining my battery and how to fix it.
>

what have u checked so far? have u tried a new battery? have u check you
charging system? is it charging properly.
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Old 07-06-2005, 18:01   #3 (permalink)
Art
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Re: 1994 Ford Thunderbird keeps killing my battery Please help

Or a short or switch stuck on.


"Rob" <rjonese@shaw.ca> wrote in message
news:cHWye.168164$El.77097@pd7tw1no...
> Land wrote:
>> I can't figure out what is killing my battery and need help. Please give
>> me some idea as to what may be draining my battery and how to fix it.
>>

> what have u checked so far? have u tried a new battery? have u check you
> charging system? is it charging properly.



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Old 07-06-2005, 18:01   #4 (permalink)
Steve Stone
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Re: 1994 Ford Thunderbird keeps killing my battery Please help


> >> I can't figure out what is killing my battery and need help. Please give
> >> me some idea as to what may be draining my battery and how to fix it.
> >>

>


Pull all the fuses before bedtime.
If the battery is still charged you know one of those circuits is the
problem.

If the battery is dead then it is something else.

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Old 07-06-2005, 23:01   #5 (permalink)
Land
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Re: 1994 Ford Thunderbird keeps killing my battery Please help

I put a new battery in. I was told that if I disconnect one of the battery
cables while the car is running and the car turns off that means it's the
alternator, so I tried that but it did not turn off. That's all I know to
try.

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Old 07-07-2005, 07:01   #6 (permalink)
MasterBlaster
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Re: 1994 Ford Thunderbird keeps killing my battery Please help


"Land" wrote

> I put a new battery in. I was told that if I disconnect one of the battery
> cables while the car is running and the car turns off that means it's the
> alternator, so I tried that but it did not turn off. That's all I know to
> try.


There's still "mechanics" telling people to pull the cable while it's running?
They must sell a lot of electrical parts, as that's an excellent way to
destroy the alternator, the ECU (computer), the radio, and many other
electrical parts, due to the huge voltage spike caused by the "load" of
the battery suddenly being removed.

Also, if the battery happens to be charging at the time, it will be producing
hydrogen gas, which vents out the top of the battery, usually right next to
the terminals. A spark from the cable, and kaboom... a face full of acid.

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Old 07-07-2005, 19:02   #7 (permalink)
Hank
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Re: 1994 Ford Thunderbird keeps killing my battery Please help

Could be the voltage regulator in the alternator/ measure the battery
with a voltmeter while running. Should say about 14+ volts... that's
a start for you.
Hank PA

On Thu, 07 Jul 2005 01:44:41 -0400, "Land" <magland9@aol.com> wrote:

>I put a new battery in. I was told that if I disconnect one of the battery
>cables while the car is running and the car turns off that means it's the
>alternator, so I tried that but it did not turn off. That's all I know to
>try.


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Old 07-08-2005, 06:01   #8 (permalink)
Sharon K.Cooke
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Re: 1994 Ford Thunderbird keeps killing my battery Please help

Hank wrote:
>
> Could be the voltage regulator in the alternator/ measure the battery
> with a voltmeter while running. Should say about 14+ volts... that's
> a start for you.
> Hank PA
>
> On Thu, 07 Jul 2005 01:44:41 -0400, "Land" <magland9@aol.com> wrote:
>
> >I put a new battery in. I was told that if I disconnect one of the battery
> >cables while the car is running and the car turns off that means it's the
> >alternator, so I tried that but it did not turn off. That's all I know to
> >try.


Don't disconnect battery while engine's running; it could fry something in a
modern car. Get a plug-in voltmeter to keep a running check on system voltage.
The voltage should stay in the 13.5V~14.5V range when engine is running. A fully
charged battery is 12.7 volts (after 3 hours off-charge).
if the battery's fully charged after shutdown, and drops to say 12.2V overnight,
there's a drain which can be caused by a stuck switch (hood, trunk, glove box,
etc.), a defective battery that won't hold a charge, or the alternator has a
defective diode, allowing reverse current flow after shutdown.
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Old 07-13-2005, 02:01   #9 (permalink)
jedi77
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re:1994 Ford Thunderbird keeps killing my battery Please help

The same thing happened to my 93 t-bird, it was a bad alternator and
starter relay which was draining my battery.
c man

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