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Electrical problem
Posted by John Chacona (more from John Chacona) on Fri, 8 Oct 1999 09:37:44
Fellow SNAABs --
This one should be a no-brainer, but . . .
A couple of months ago, the battery on my '86 900 was going dead
periodically, an occurence I traced to a broken taillight interrupt switch
behind the dash.
Or so I thought.
I don't often drive the car between Friday at 5 pm and monday morning, and
the past couple of weekends, the battery has been very low by Monday
morning. This Monday, I truned the key, got nothing but idiot lights,
panicked (I had my 2-yr.-old daughter in the back), turned it again and it
cranked slowly and somewhat grumpily to a start.
I drove around for about an hour, thinking that should charge the battery
-- and it did, but not completely. Now, the same low battery condition
happens overnight, not over a weekend.
So it seems that I have a slow short somewhere, and I think I know how to
isolate the circuit on which it is occurring (though I'm wondering if it is
so slow that I may not detect it with a VOM).
It seems that I may also have an alternator that is on its last legs, since
my battery may not be recharging very completely.
Maybe.
Can anyone give me a simple alternator test (I have the 8-valve,
normally-aspirated dawg of an '86 900 engine)? Or a clue as to what else
may be wrong with Helga, other than the usual geriatric, slow-to-get-going
thing?
Gtatefully,
JC ('86 '900, 149k 'Helga')
|John Chacona|
|writer/producer/idiot-savant|
|jchaconano39sdcx6spamx782reporters.net|
|www.katalyst.net (as soon as INTERNIC gets around to it)|
|814.453.3497|
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