Electronics Need help wiring something up? Thinking of adding an electrical component to your car? Need help troubleshooting that wiring glitch?

Slow Drain

Old Apr 30, 2010 | 08:27 PM
  #1  
Tank91RS's Avatar
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From: Dallas, TX
Car: 1991 Camaro RS
Engine: Carb 350ci bored .40
Transmission: 700r4
Axle/Gears: 2.73:1
Slow Drain

Ok so i own a 91 Camaro RS.
Been trying to fix it up bit by bit as it is my first car.
Learning things as I go, but now im a roadblock in my Engineering Career.

My car has a slow power drain coming from somewhere...
Takes about 4 or 5 days for it to die entirely. But it gets there.

I was told to get a test light and take out fuse by fuse till the light goes out. Then i would know where my problem was.

But then it was brought to my attention that, the light might or might not go out when a fuse if blown and wasnt entirely reliable.

So if i were to buy a volt meter would it still be the same steps to find the drain?
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Old May 3, 2010 | 02:41 PM
  #2  
Rockguy's Avatar
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From: IL
Car: 88 IROC-Z
Engine: 5.7 TPI
Re: Slow Drain

Take out fuses til what light goes out? That makes no sense. You should provide more information. Do you mean it goes dead if the car sits for 4 or 5 days or does it go dead every 4 or 5 days even if you drive it everyday? Do you have an alarm on the car? Any extra things like an alarm that you or someone else added?

If you have a trunk or glove box light, it's always possible that it could be stuck on.
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Old May 3, 2010 | 05:30 PM
  #3  
///DAN///'s Avatar
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From: Pennslyvania
Car: 1984 camaro Z28
Engine: 355 SBC
Transmission: 700 r-4
Axle/Gears: Strange 3:73 posi
Re: Slow Drain

mine was doing the same thing and i just found the other day that the light in the hatch was on all the time turned it off and no problem now .
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Old May 3, 2010 | 11:24 PM
  #4  
Tank91RS's Avatar
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From: Dallas, TX
Car: 1991 Camaro RS
Engine: Carb 350ci bored .40
Transmission: 700r4
Axle/Gears: 2.73:1
Re: Slow Drain

Originally Posted by Rockguy
Take out fuses til what light goes out? That makes no sense. You should provide more information. Do you mean it goes dead if the car sits for 4 or 5 days or does it go dead every 4 or 5 days even if you drive it everyday? Do you have an alarm on the car? Any extra things like an alarm that you or someone else added?

If you have a trunk or glove box light, it's always possible that it could be stuck on.
Take each fuse out one by one untill the test light goes out, but i actually just got a voltmeter, so what would be the best way to find the drain with that?
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Old May 3, 2010 | 11:25 PM
  #5  
Tank91RS's Avatar
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From: Dallas, TX
Car: 1991 Camaro RS
Engine: Carb 350ci bored .40
Transmission: 700r4
Axle/Gears: 2.73:1
Re: Slow Drain

Originally Posted by ///DAN///
mine was doing the same thing and i just found the other day that the light in the hatch was on all the time turned it off and no problem now .
I think my hatch light is actually burned out, so it doesnt turn on, but i guess it could drain without being on, maybe?
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Old May 3, 2010 | 11:34 PM
  #6  
Rockguy's Avatar
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From: IL
Car: 88 IROC-Z
Engine: 5.7 TPI
Re: Slow Drain

Originally Posted by Tank91RS
Take each fuse out one by one untill the test light goes out, but i actually just got a voltmeter, so what would be the best way to find the drain with that?

What are you putting the test light on for it to be on in the first place? I'm not following what you are trying to do here.
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Old May 4, 2010 | 09:57 AM
  #7  
Tank91RS's Avatar
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From: Dallas, TX
Car: 1991 Camaro RS
Engine: Carb 350ci bored .40
Transmission: 700r4
Axle/Gears: 2.73:1
Re: Slow Drain

Ok, lemme help you out. There is no test light.
The test light idea was just what someone told me was a way to find the drain.

Sorry if it is a little confusing.
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Old May 5, 2010 | 10:22 AM
  #8  
NINÅ's Avatar
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From: Mooresville NC
Car: LOWERED ♦ CRIMSON METALFLAKE
Engine: ► 400 KUBES ◄
Transmission: 765R4
Axle/Gears: EATON POSI 4.56
Give Them A Meter, They’ll Think They’re A Yard

Sometimes the under-hood light does not go out so check that easy one first.

If the light is OK use a meter.

It is a better idea to buy a meter because you will need it in the future.

Buy a
VOM (Volt Ohm Milliampmeter).

Buy an inexpensive one, they react faster and are durable.
……..Don’t buy digital, they are subject to EMI.

Now once you have the meter dial it to the ammeter function and connect it in series with the battery.

Use the 500 mA scale or closest available.

If there is more than 50 milliamps there is excessive draw.

With everything turned off and doors closed observe the current flow.

Pull the fuses one at a time till you see the current drop.

That’s the circuit with the problem.


Happy Racing!



He Must Have Been Be Cheating - Because I Was And He Almost Beat Me.
……..
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Old May 5, 2010 | 08:24 PM
  #9  
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From: IL
Car: 88 IROC-Z
Engine: 5.7 TPI
Re: Slow Drain

Originally Posted by Tank91RS
Ok, lemme help you out. There is no test light.
The test light idea was just what someone told me was a way to find the drain.

Sorry if it is a little confusing.

Ok now I see what you were being told. There was no mention in the original post of putting the light on the battery. Like Nina just said, you want to use a VOM. He described how to do it. I think that is what the first guy was telling you to do. It just wasn't explained very well. Good luck. Let us know what you find
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