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Diagnosing A Car Battery That Runs Down


Why Your Car Battery Runs Down. ... KEY-OFF CAR BATTERY DRAIN. If your car .... Sometimes a bad alternator diode can cause a car battery to run down.

www.ask.com/youtube?q=Does a Bad Car Battery Drain Your Alternator?&v=2x0o4-bNCvY
Jun 26, 2014 ... Have you performed a parasitic drain test with every possible fuse ... Best thing to do is to disconnect the battery cables when the car is not in use. ... +Chaborgnik Ruski Common symptom for a faulty alternator in general ... Your diagnosis implies there is a shorted diode(s), but this test will confirm it.
www.ask.com/youtube?q=Does a Bad Car Battery Drain Your Alternator?&v=oHKUvB5oHIA
Nov 5, 2011 ... A shorted alternator can drain a car battery, even with the ignition off). .... Is your voltage regulator inside the alt or external? On some cars its ...

Can my alternator drain my battery if the car isnt running ...


Jul 26, 2008 ... Best Answer: Shouldn't, no, not saying it can't. But your car is running off the battery if the alternator is bad. Most likely you're draining the ...

Signs of a Bad Alternator - Cars - LoveToKnow


If your alternator does not work properly, your car's engine will not run ... When you have a bad alternator, your battery will drain every time that you run your car  ...

Will bad alternator diode cause parasitic drain and still charge ...


Will bad alternator diode cause parasitic drain and still charge battery? ... The battery was 7 years old so I figured it was toast when my car failed ... It sounds like a bad alternator to me, it's possible that your old battery was fine ...

[cars] Battery keeps dying can't figure out why. - Penny Arcade


Does your car have trouble starting after sitting for a while or can you ... Best case , he replaced your alternator with one that's already bad by accident. .... My battery keeps draining and I have gone through 2 new batteries and ...

Everything You Need to Know About Car Batteries | Completely ...


Get to know your car's battery and how it powers your journeys. ... If the alternator is faulty, your battery will no longer receive a charge and is moments away from ... When it drains completely…well, we all know what happens next: curbed car.

Know Your Car's Battery - Firestone Complete Auto Care


Your car can start with a faulty alternator, but it won't be able to run for an extended ... and bad maintenance techniques can quickly drain your battery's charge.

Can an Alternator Drain a Battery? - eHow


... car's battery. In some cases, however, the alternator can actually drain the battery, causing significant problems. ... Recharging a car battery won't help if the car has a faulty alternator. battery ... The Right Way To Polish Your Headlights AOL.

Popular Q&A
Q: How long does it take a car battery to drain if the alternator is...
A: 3 or 4 hours if you dont use heater or radio or lites. Read More »
Source: wiki.answers.com
Q: Does the alternator charge your car battery after your battery ha...
A: While the engine is running the ... Read More »
Source: www.chacha.com
Helpful Resources

Car-repair/how-to-tell-if-you-have-a-faulty-alternator - CarsDirect


How to Tell if Your Alternator Has Gone Bad A dead alternator can cause all kinds of ... Car Battery Drain, Dead Overnight Understanding Why Your Battery Dies.

Can a dead alternator drain a brand-new battery with a day or two ...


Your FIL is correct the alternator is the most likely culprit. ... If the alternator is dead, but the battery is fully charged, the car can and does use .... If the alternator is bad, then everything electrical is running off the battery and it ...

How to Find and Stop Car Battery Drains – DIY ... - Popular Mechanics


Jun 7, 2010 ... There are plenty of energy-robbing devices on your car that are supposed to go to ... running, and a charging-system voltage test confirms that your alternator is charging. ... Some vehicles will show as little as 10 mA residual drain. ..... If you thought the cost of the BP oil spill in 2010 was bad, this is worse.