89 Electrical problem-alternator?

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Old 21 Feb 2004, 01:00 pm   #1 (permalink)
Mike Mason
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Default 89 Electrical problem-alternator?

My son's 89 went dead a few days ago. We thought the alternator might
be bad. He took alternator (new in Aug 2001) and the battery for a
test and they both tested out good. Any ideas?
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Old 22 Feb 2004, 12:08 am   #2 (permalink)
Jason James
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Default Re: 89 Electrical problem-alternator?


"Mike Mason" <mikendebbie@hotmail.com> wrote in message
news:66f3d2ec.0402211100.3ff4af27@posting.google.c om...
> My son's 89 went dead a few days ago. We thought the alternator might
> be bad. He took alternator (new in Aug 2001) and the battery for a
> test and they both tested out good. Any ideas?



When you say the car went dead, you mean the key wouldn't activate the
starter? If so, did anything else electrical work on the car? You need to
answer these questions to narrow the issue down a bit.

If other things elect were OK, you are looking at a starter -motor or
control circuitry problem,..if not OK, amore basic problem in the battery to
car wiring or fusing.

Jason


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Old 22 Feb 2004, 10:17 pm   #3 (permalink)
Mike Mason
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Default Re: 89 Electrical problem-alternator?

> When you say the car went dead, you mean the key wouldn't activate the
> starter? If so, did anything else electrical work on the car? You need to
> answer these questions to narrow the issue down a bit.
>
> If other things elect were OK, you are looking at a starter -motor or
> control circuitry problem,..if not OK, amore basic problem in the battery to
> car wiring or fusing.



The car "died" as in no juice from the battery. He tried jumping it
and drove a ways toward home but it died again (no eleictrical
juice)...hence we suspected maybe a bad alternator. He called today
to report that he put the battery and alternator back in the car and
it started up and seemed to run fine, but the real test will come in
the next few days. Maybe ite was some sort of bad connection
somewhere.
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Old 23 Feb 2004, 12:43 pm   #4 (permalink)
Jason James
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Default Re: 89 Electrical problem-alternator?


"Mike Mason" <mikendebbie@hotmail.com> wrote in message
news:66f3d2ec.0402222017.104f8d01@posting.google.c om...
> > When you say the car went dead, you mean the key wouldn't activate the
> > starter? If so, did anything else electrical work on the car? You need

to
> > answer these questions to narrow the issue down a bit.
> >
> > If other things elect were OK, you are looking at a starter -motor or
> > control circuitry problem,..if not OK, amore basic problem in the

battery to
> > car wiring or fusing.

>
>
> The car "died" as in no juice from the battery. He tried jumping it
> and drove a ways toward home but it died again (no eleictrical
> juice)...hence we suspected maybe a bad alternator.


OK, agree...once the car jump started, the alternator should keep the car
running, regardless of battery condition, provided the car is not idling
down ( revs dropping too far when driver's foot is off the go-pedal) so far
that the alternator cannot output sufficient current to run the car's
fuel-pump, injection, engine management computer etc.

He called today
> to report that he put the battery and alternator back in the car and
> it started up and seemed to run fine, but the real test will come in
> the next few days. Maybe ite was some sort of bad connection
> somewhere.


That's possible, or perhaps the alternator belt was slipping badly. Once the
alt failed to keep up with demand and the battery started to go flat, the
charge light should have been illuminated.
Please advise if the problem persists.

Jason


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