2000 V70-XC dash lights for ABS traction control on
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precopster
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Re: 2000 V70-XC dash lights for ABS traction control on
Or a parasitic drain in the electrical system. Run the engine at idle and take voltage measurements at the alternator + cable ( thick red cable) where it connects with the alternator then compare the voltage with what is at the battery + terminal.
Current cars VW Transporter 2.5TDI, 2010 XC90 D5 R Design
- abscate
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Thats not an alternator "not charging problem", it sounds much more like a short somewhere. A large current drain is a dangerous problem and not a place to learn electronics. You can easily end up burning up your car. A smoking battery means you have 100s of Watts of electrical power going somewhere it shouldn't, and you need to sort that out.alex7 wrote:So the ABS and traction lights are off now. But, now my battery keeps dying. I got a brand new battery yesterday and the car cranked up. But, this morning I try to crank it and it doesn't work. What could be draining or killing my battery?
Look at all your cables for wear spots and grounding on metal in the engine compartment - if you can find the short you can replace the cable - otherwise take it to a pro for safety.
Empty Nester
A Captain in a Sea of Estrogen
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A Captain in a Sea of Estrogen
1999-V70-T5M56 2005-V70-M56 1999-S70 VW T4 XC90-in-Red
Link to Maintenance record thread
- BEJinFbk
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Parasitic drain is a very good possibility,precopster wrote:Or a parasitic drain in the electrical system. Run the engine at idle and take voltage measurements at the alternator + cable ( thick red cable) where it connects with the alternator then compare the voltage with what is at the battery + terminal.
but you're describing the test for voltage drop
caused by bad cables and/or cable connections.
Parasitic drain is tested for with the car off, a battery cable
removed and an amp meter reading taken between the battery
and the car. A normal reading should be around 25-35 milliamps.
If it's higher, you can start pulling fuses until you see it come down
and isolate the branch circuit that'sdrawing too much current.
'98 V70 R - Well Equipped for Life Up North... 
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precopster
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I know that I was describing the measurement for voltage drop; should have made a paragraph after my first statement.
As the OP isn't exactly comfortable under the hood I thought I'd lead him to the parastic drain procedure after he did the voltage drop test.
As far as the smoking battery I would defintely follow abscate's advice if you're certain the battery is smoking.
As the OP isn't exactly comfortable under the hood I thought I'd lead him to the parastic drain procedure after he did the voltage drop test.
As far as the smoking battery I would defintely follow abscate's advice if you're certain the battery is smoking.
Current cars VW Transporter 2.5TDI, 2010 XC90 D5 R Design
So after I recharged the new battery I got because it did not have a lot of power, I used a volt meter/tester on the battery right as I cranked the car.
Before being cranked, it was showing 12 volts, which is normal. But, after cranking the car, the meter was reading 17 volts, and climbing from there. While it read 17 volts, the battery was spitting out acid. So I turned the car off. Wouldn't a bad alternator cause such a high battery voltage?
Before being cranked, it was showing 12 volts, which is normal. But, after cranking the car, the meter was reading 17 volts, and climbing from there. While it read 17 volts, the battery was spitting out acid. So I turned the car off. Wouldn't a bad alternator cause such a high battery voltage?
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precopster
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Was the engine running while measuring the 17 Volts? If not the alternator is not being used when engine is shut down so the only culprit here is probably a shorted cell in the battery.
You could try any other battery or disconnect the positive lead of the battery while the engine is running and continue to measure voltage. If it's still 17V with engine running and positive lead disconnected it's definitely an alternator issue.
Also very dangerous
needless to say.
You could try any other battery or disconnect the positive lead of the battery while the engine is running and continue to measure voltage. If it's still 17V with engine running and positive lead disconnected it's definitely an alternator issue.
Also very dangerous
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- BEJinFbk
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Sounds like you've got a faulty voltage regulator.
It's job it to monitor system voltage and tell the
alternator whether or not it should be working
and putting out power or just spinning until
power is needed.
It's a replaceable part of the alternator that can be
swapped without actually pulling the whole thing.
It's job it to monitor system voltage and tell the
alternator whether or not it should be working
and putting out power or just spinning until
power is needed.
It's a replaceable part of the alternator that can be
swapped without actually pulling the whole thing.
'98 V70 R - Well Equipped for Life Up North... 
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precopster
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Was the engine running while measuring 17 volts?
Current cars VW Transporter 2.5TDI, 2010 XC90 D5 R Design
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