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Old 05-06-2008, 11:49 PM   #1 (permalink)
bobbyisking
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How to pinpoint what is draining battery?

Since installing my new S4 cams, my b13's battery keeps getting drained overnight. Had the battery recharged at autozone, and it drained in two days. Is there a way to test and pinpoint what exactly is draining the battery?
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Old 05-07-2008, 12:05 AM   #2 (permalink)
robchaos19
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Leave the car off, remove the negative battery cable, and attach a Ammeter in between the neg cable and the negative battery terminal. That will show you how many milliamps (or amps) are being drawn. Start pulling fuses untill the parasitic draw drops. That circuit will be your problem.

Just FYI, an alternator with bad diodes can draw electricity. I had that issue when I first bought My NX, battery kept dying.
To check that either disconnect the alternator cable to see if the draw drops, or you can hook up a voltmeter set to AC Voltage across the battery terminals with the car running, and if the voltmeter reads AC voltage that means the alternator diodes could be bad
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Old 05-07-2008, 06:27 AM   #3 (permalink)
CTGreen98200SX
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If you are 100% positive this problem just started happening after installing your cams, I would check closely around the valve cover just to be sure you didn't pinch any wires anywhere.

I had this happen to one of my Talons when I did injector upgrades... I pinched a wire under the fuel-rail.
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Old 05-07-2008, 04:28 PM   #4 (permalink)
budgetNX
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Quote:
Originally Posted by robchaos19 View Post
Leave the car off, remove the negative battery cable, and attach a Ammeter in between the neg cable and the negative battery terminal. That will show you how many milliamps (or amps) are being drawn. Start pulling fuses untill the parasitic draw drops. That circuit will be your problem.
this is what u need to do. its pretty simple too.
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Then you get pissy, belligerant, and your panties get bunched up when someone, namely me, tries to actually help you with a couple of links?!?

Are you f*cking kidding me?!?

You sir, are an unmitigated selfish, egocentric, self-absorbed, DOUCHEBAG and can go f*ck yourself.

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