Electrical drain
Electrical drain
Ok the fuses are all good, I checked them all with an ammeter or whatever.
The battery is a week old
The car only dies if sitting
The alternater charges
It takes about six hours for the battery to drain to the point where I cant start the engine.
What should I do?
The battery is a week old
The car only dies if sitting
The alternater charges
It takes about six hours for the battery to drain to the point where I cant start the engine.
What should I do?
Junior Member
Joined: Jun 2006
Posts: 43
Likes: 1
From: St. Marys, Ohio
Car: 1989 Pontiac Formula 350(Maui Blue)
Engine: 355 TPI,accell superram,full roller
Transmission: Street/strip 700R4
Axle/Gears: Australian 9, 3:27 ratio
Re: Electrical drain
I had a similar problem last year. I had a slow drain and it ended up being alternator. I took it off and had it bench tested. It would charge good unless put under a load on the Advance machine. I replaced it and had no other charging problems. Evidentally, something internal going on inside of alternator to cause a slow drain, even when sitting in my garage. hope this helps.
Re: Electrical drain
Thanks, Im gonna have someone look at the alternator, also I tried to start my car today on a fast charge and the engine made that clicking noise when it turns over but really fast and repetative, it sounded pretty bad I eventually got the car started but was just wondering if something is giving out or if it was just because it wasnt charged.
Senior Member
Joined: Jul 2006
Posts: 609
Likes: 0
From: Oslo, Norway
Engine: '85 Monte SS L69 305
Transmission: TH 200-4R
Axle/Gears: 3.23
Re: Electrical drain
Fast clicking occurs with feeble battery, nothing to worry about, but try not to drain the battery too often before you find the cause or it'll die on you.
6 hours drain time is pretty fast, the offending circuit should make a decent spark when dis-/connected. The offending item should be pretty hot too.
6 hours drain time is pretty fast, the offending circuit should make a decent spark when dis-/connected. The offending item should be pretty hot too.
Junior Member
Joined: Jan 2006
Posts: 95
Likes: 0
From: northern maine usa/
Car: 1988 iroc/2000 saab 9-5
Engine: 355 tpi/Roller cam
Transmission: 700r4/2800 stall,megashifter
Axle/Gears: 3;42
Re: Electrical drain
Ive had a similar problem also.
When it clicks,see if any of your battery cables are hot/
My brand new pos battery cable,bought from a parts store,was not crimped correctly,and melted at the starter.
When it clicks,see if any of your battery cables are hot/
My brand new pos battery cable,bought from a parts store,was not crimped correctly,and melted at the starter.
Member
iTrader: (2)
Joined: Nov 2004
Posts: 379
Likes: 4
From: New Mexico
Car: 87 Firebird,
Engine: lq4
Transmission: gto t56 (mn12)
Re: Electrical drain
"DRAINAGE!" Do you have a meter that can check amperage? If so wiring the meter in series with the battery.
Disconnect one of the battery cables and connect one lead from the meter to the battery and the other lead to the battery cable. Make sure your meter can support this type of thing. Then turn it on and look at the amperage.
There is going to be some residual amperage being used when the car is off. Things like the clock, radio presets, and whatever else. But this should be minimal amperage. If the number is high then you have a drain somewhere.
Next step is to leave the meter connected and start disconnecting fuses one at a time. If the reading on the meter goes down a significant amount the chances of your drain in that circuit are good. Then you can narrow it down from there.
If you remove all the fuses and you still can't find the drainage then try disconnecting the wires to the alternator. Check your battery cables from neg. to ground and positive to starter.
With a drain that large I would guess you will find the problem very soon. Let us know.
Disconnect one of the battery cables and connect one lead from the meter to the battery and the other lead to the battery cable. Make sure your meter can support this type of thing. Then turn it on and look at the amperage.
There is going to be some residual amperage being used when the car is off. Things like the clock, radio presets, and whatever else. But this should be minimal amperage. If the number is high then you have a drain somewhere.
Next step is to leave the meter connected and start disconnecting fuses one at a time. If the reading on the meter goes down a significant amount the chances of your drain in that circuit are good. Then you can narrow it down from there.
If you remove all the fuses and you still can't find the drainage then try disconnecting the wires to the alternator. Check your battery cables from neg. to ground and positive to starter.
With a drain that large I would guess you will find the problem very soon. Let us know.
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Junior Member
Joined: Jul 2006
Posts: 58
Likes: 0
From: Rogersville Mo.
Car: 86 camaro
Engine: 305
Transmission: 700 auto
Axle/Gears: 308
Re: Electrical drain
FirehawkSS, is right thats the best way to find the drain in the battery.I had a 68 firebird it was draining the battery it turned out to be the starter selenoid.Hope this helps.
Re: Electrical drain
Allright, did the test and came up with nothing. There is a draw somewhere cause it was at 10.24 on m200a so where should I go from here. I did all the fuses and the alternator. to recap, its not the battery either. I also got my alternator tested at autozone and its perfect.
Senior Member
Joined: Jul 2006
Posts: 609
Likes: 0
From: Oslo, Norway
Engine: '85 Monte SS L69 305
Transmission: TH 200-4R
Axle/Gears: 3.23
Re: Electrical drain
Please state the range again, it didn't make sense to me. If you read 10.24 then it's either mA if in the 20mA range, or it's A if measured in the 20A range.
10mA is ok, being normal memory back-up and clock draw, but 10A would correspond with the 6 hour drain time you mentioned and needs to be fixed.
10mA is ok, being normal memory back-up and clock draw, but 10A would correspond with the 6 hour drain time you mentioned and needs to be fixed.
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