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Old 03-15-2010, 01:06 PM
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FSETH FSETH is offline
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Location: Marietta, GA
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Quote:
Originally Posted by scchang View Post
Good question. There is a little fluctuation, no more than 0.2V though. While driving, I'm seeing 13.4-13.6V.

What I don't understand is how it could start after sitting for a couple days, be driven 12 miles, sit for five hours and then not start.

Then, after being jumped, driven home another 12 miles, sit for a couple days and start again.

It doesn't make sense that this little bit of driving would adequately charge the battery, but what do I know!
The alternator on my e36 fried out, I replaced with a remanufactured unit and noticed that my lights (interior/exterior) were pulsing a little. Went down to Autozone and had them test the alternator and they found it was fluctuating about 0.50 - 1.0. Ended up being the voltage regulator.
I put in another remanufactured alternator and all is well.


I just replaced the battery in our X a few weeks ago. One morning (after sitting all night) it started up fine. Then my wife shut the car off at a gas station about 2 miles down the road and the car would not crank. I was a little surprised it started normal just a few minutes earlier then would not start at all in such a short period of time. There really wasn't much of a warning that the battery was loosing charge.
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