Question about 1994 Jaguar XJ6

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Battery drain after a short while - 1994 Jaguar XJ6

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  • Eric Hobson
    Eric Hobson May 29, 2015

    battery drains even when car is turned off what could be doing this

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Get a bigger battery or check alternator

Posted on Jun 09, 2010

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Have a short in wiring deadens batteries 2008 ram 3500


if short trace fuses if no fuses are blown test and check battery cables and connections if parasite drain then the following links will assist you
How to Find Parasitic Battery Drain How To Perform Parasitic Draw Test EricTheCarGuy How to do Parasitic Battery Drain Test

Nov 11, 2016 | Cars & Trucks

Tip

My car is draining battery even with ignition and light off


That means that you have a parasitic drain, that can be caused by a short or by a defective device.

First try to understand if there is a parasitic drain.

Once you exclude the drain, replace the battery, a battery with shorted cells can cause the drain.

To measure drainage remove ignition key, connect the amp meter between the battery positive wire connector and positive terminal.A couple of milliamps drainage is normal, and is caused by instruments, car stereo memory, ECU etc.
Start removing more fuses , and open the wiring at different points , trying to locate the problem.
Remove the fuses and see if you have drain by connecting a meter to read amps on battery, if you have drain with no fuse, then the problem is insulated to wiring harness before the fuse, with something shorted between the battery and the fuseblock.
Also check car stereo and car amp HU, the HU can keep a unit on when the ignition key is off, causing drainage.


on May 17, 2009 | 2004 Chrysler Pacifica

1 Answer

My1992 Silhouette want hold charge over night .what could the problem be?


Yes, something is draining the battery.
Perhaps you could disconnect the battery each evening as soon as you arrive home, and reconnect it in the morning to go to wherever.
If you work, you may wish to disconnect it when you get to work, etc.
Some common causes are :
1)a short in the alternator,
2) a short in the radio,
3) a short in the computer,
4) a short anywhere else, especially under the hood of the car.
God bless your efforts.

Jun 23, 2016 | Cars & Trucks

1 Answer

Battery draining overnight,replaced with new battery now starting


Disconnect any one of the cable from battery (either + or - ) and in series with battery connect a 12v bulb of low wattage say 5w or 10w. By connecting in series I mean one wire of bulb goes to disconnected battery cable and the other wire to the terminal of battery from where you disconnected the cable.

Now observe the filament of bulb, if it glows then your battery is draining due to short in your vehicle electrical system. You need to locate this short circuit and fix it, otherwise your new battery would also drain.

Let us know what you found out.

May 05, 2014 | 1990 Ford F150

1 Answer

1995 stratus starter fuse keeps blowing out and battery keeps draining


If the short was draining the battery then when the fuse blew that would stop the battery drain. So you have two faults. The battery and a short after the fuse.. Have a load test done on the battery to check for internal fault. follow the wire after the fuse and find where it is touching the earth or the unit is is hooked to may be the fault.

Jan 05, 2014 | 2000 Dodge Stratus

1 Answer

Installed a new battery and just seating for two day it discharged the battery


well many things will drain battery, faulty alternator,bad door power lock.radio could have short.interior dome light remain on.short in ignition switch or ecm will drain battery.

Nov 08, 2011 | 1986 Ford F150 SuperCab

2 Answers

New starter, alt, and battery but battery drains over night boost car and runs all day next day no start. manual transmission so i roll down hill and it starts but not when battery is totally dead


there are not a lot of computers that could be causing the drain, so baring any aftermarket accessories you should start searching for an indirect short to power

prop hood and leave the doors open... this is important because you do not want to wake the computers once you start your test

next, unplug the negative battery cable and insert a DVOM in series

drain should be less than 80mA after 30-90 minutes

if drain is higher, start pulling fuses until the drain is isolated

Apr 06, 2010 | 1987 Ford Escort

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

1998 Corvette drains the battery in less than 2 days.


No, corrosion will not cause a battery to drain, even if the corrosion is on the terminals. Several factors can cause battery drain, I would first have the battery tested to see if the battery it self is not bad. If the battery is good, then the most common is a short. All most all new cars have a certain amount of drain,(measured in milivolts) this drain is for clocks and computer memory's, and it would take several days of a vehicle sitting for the battery to be drained. Don't immediately assume you have a problem if you see 2-6 milivolts of drain on a battery with the key out, now if your battery is being drained after being parked over night, you have a problem. The easiest way to pin down the problem short is to disconnect your positive battery cable from the battery, take a 12 volt test light and clamp one end to the positive cable, and hold the probe to the positive post. Now if you have a short the light will come on. Have someone help you by pulling the fuses one at a time. If when a fuse is pulled the light goes out you have isolated the short to that system. If you pulled all the fuses and the light never went out try disconnecting all the wires from the alternator, 9 times outta 10 do this will let you know where your short is. If the system is not critical like power locks some people just leave the fuse out. 

Mar 05, 2009 | 1998 Chevrolet Corvette

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