Question about Pontiac Bonneville

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Battery will drain, cable has to be removed at night so battery will not drain there has to be a short somewhere.lights stay on in the car

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Check to see if someone moved the dimmer switch all the way on. When you twist the dimmer switch you will here a click and the switch will stop moving. Turn back past the click. This is a common problem. The dimmer switch is located on the dash.

Posted on Jul 26, 2008

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2001 Mercury villager battery drains after 2 days. New battery, alternator and starter. Something is causing a constant drain any one know if this is common?


Not common to your car in particular, but common.
Unhook your battery each night to keep from draining the battery whilst you search out the problem.
Put a test meter between the battery and the cable you took off to see how much of a short there is.
Some things that I have found were:
1) Some new replacement radios will drain a battery because they are on all the time, like most television sets today.
2) I have a car, (and have had a few more) that the glove box , (being plastic) was warped, and the glove box light stayed on all the time. I had to remove the bulb.
3) An alarm system, and some are factory built in, can drain a battery.
4) A trunk light, an under-the-hood light, or something else can do this.
Be blessed.

Feb 20, 2013 | 2001 Mercury Villager

1 Answer

I have a volvo s80 T6 2002 when i want to start the car in the morning the battery is flat i changed the battery but the same problem persists i checked the alternator was good during the day when the car...


you have a short somewhere it kills the battery after sitting all night make sure no lights are staying on for example you glove box light if it doesnt shut all the way light could stay on and you dont even no it.

Feb 17, 2013 | 1999 Volvo S80

2 Answers

Why does my 96 Cadillac Eldorado battery keep discharging?


First step have the battery tested, a bad cell can cause a internal drain and kill the battery, if the batt is ok then check for interior lights like visors that stay on or interior light that come on by themselves at night due to defective door switches.

Dec 27, 2012 | Cars & Trucks

1 Answer

Battery drain


They most common reason for a battery drain is somewhere in the car a light is on or coming on at night. Next would be a shorted battery cell due to a sulfated cell plate and a defective diode in the alternator.

Oct 24, 2012 | Cars & Trucks

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Battery draining over night bonneville 95


a short will blow a fuse what you have is something stating on most common is a bad power antenna but remove the neg cable and place a test light between the battery and the neg cable remove fuses till the light goes dim the removed fuse that allows the light to go dime is the draw on the battery also a bad diode in the alternator will drain it as well so unplug and unbolt that as well

Jun 05, 2012 | 1995 Pontiac Bonneville

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2002 s80 The interior lights on the doors will not go off killing the battery. Just bought car used. What should i do? Thx Elizabeth


For now you can remove the appropriate fuse for the lights. Or unhook the negative cable on battery at night zo it wont drain your battery. But there maybe a short in your wires somewhere that you'll need to have checked out.

Aug 26, 2011 | 2002 Volvo S80

2 Answers

The battery keeps draining i can charge it runs. park it at night it runs the battery down. i have tried a new battery.tried charging it and not driving the truck and at still drain the juice.


remove the pos battery terminal and connect a test light to the cable and battery, remove the fuses one at a time till the light goes out, remember the dome light is on when checking interior fuses. either remove the bulb or push the door button in, this will direct you to the circuit that has the problem

Apr 05, 2011 | 1991 Ford F150

1 Answer

The battery light stays on and the idle is high. Replaced the alternator 2 weeks ago and its doing it again. Is there anything else it could be or just a bad alternator?


You might have a short to ground somewhere that is draining the battery and preventing the alternator from charging it up. This is also called a "parasitic battery drain". To find it, you need to turn off the car and turn all accessories off. All lights inside and out should be off. Make sure everything you can think of is turned off. Then disconnect the negative cable clamp from the negative battery terminal. Hook up a 12V test light between the disconnected cable end and the negative battery post. If the light glows brightly, you have a short somewhere. Now, with the light still glowing, start removing fuses one at a time until the light goes out. The short is on a circuit that is protected by the last fuse you pulled before the light went out. the owner's manual should list what circuits are associated with the fuse. the problem is in one of those circuits or systems. You'll have to disconnect each piece of equipment protected by that fuse one at a time until you find the problem. Hint: it is probably in the circuit of something that has already failed to operate. For example, if your stereo has been "dead" for a while, the short may be in the wiring that powered it.

Feb 06, 2011 | 1989 Honda Accord 4 Door

2 Answers

Battery drains


This is a very difficult task.

One way to narrow the possibilities is to connect and ammeter between the battery ground cable and the battery (disconnect the ground cable first).

Start pulling fuses until the current draw goes to zero. That will tell you which electrical subsystem is causing the drain.

Then you start probing that subsystem. A good possibility is a stuck relay.

It's not a short unless it's a resistive short. A short would have already taken care of the drain problem by blowing a fuse or burning up something.

Apr 21, 2009 | 1994 Buick Century

1 Answer

Batterie trouble


You have an electrical short somewhere in the car, and it's what is draining the battery. Put a lightbulb inline with the battery (between the battery and the negative cable). You should see it light up. Get your fusebox diagram out and remove the fuse for the radio and any security system (since power always runs through these). Then remove each fuse one by one, and watch the bulb. When you pull a fuse, if the bulb stays lit, that's not the one you want. Put it back and pull the next one. When you pull a fuse and the bulb goes out, you've found the circuit that is conducting and causing your battery drain. From there, you have to troubleshoot the circuit to find out which component is failing.

Sep 03, 2008 | Hummer H2 Cars & Trucks

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